{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T11:22:33Z","timestamp":1771932153323,"version":"3.50.1"},"reference-count":96,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T00:00:00Z","timestamp":1771200000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100015605","name":"Covestro","doi-asserted-by":"publisher","award":["20190218"],"award-info":[{"award-number":["20190218"]}],"id":[{"id":"10.13039\/501100015605","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The oxidation of flexible polyurethane (PUR) foams significantly impacts product durability, vehicle indoor air quality, and volatile organic compound (VOC) emissions. This study investigates oxidation kinetics and VOC emissions (65\u2013155 \u00b0C) from foams with indices between 70 and 115 (molar ratio of NCO to NCO-reactive groups \u00d7 100), where a higher index represents greater hard segment (methylene diphenyl diisocyanate) and lower soft segment (polyether polyol) content. Using a flow-through setup with PTFE chambers and Tenax thermodesorption tubes and dinitrophenylhydrazine (DNPH) cartridges, VOCs from initial analyte loading, hydroperoxide degradation, and autoxidation were distinguished, providing robust kinetic data unaffected by diffusion interference. A higher index accelerated soft segment degradation, increasing oxidation rates and VOC emissions. The activation energy of 1,2-propanediol-1-acetate-2-formate increased from 87 kJ\/mol in low-index to 108 kJ\/mol in high-index formulations. VOC emissions from high-index foams were tripled for acetaldehyde during long-term aging at 65 \u00b0C. While most emissions followed Arrhenius behavior, formaldehyde and acrolein deviated above 100 \u00b0C, with higher hard-segment content extending their Arrhenius range. These findings link PUR composition to degradation behavior and emissions, enabling formulation improvements. The results advance methods for evaluating raw material contributions and the performance of antioxidants under realistic aging conditions.<\/jats:p>","DOI":"10.3390\/polym18040496","type":"journal-article","created":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T14:55:47Z","timestamp":1771253747000},"page":"496","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Kinetic Study of the Autoxidative Formation of VOCs, Including Formaldehyde, Acetaldehyde and Acrolein from Polyurethane Soft Foams"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9984-8217","authenticated-orcid":false,"given":"Christian Stefan","family":"Sandten","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering, University of Applied Sciences Muenster, 48565 Steinfurt, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Kreyenschmidt","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, University of Applied Sciences Muenster, 48565 Steinfurt, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3715-2692","authenticated-orcid":false,"given":"Rolf","family":"Albach","sequence":"additional","affiliation":[{"name":"Covestro Deutschland AG, 51373 Leverkusen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,16]]},"reference":[{"key":"ref_1","unstructured":"Ionescu, M. (2016). Chemistry and Technology of Polyols for Polyurethanes, A Smithers Group Company. [2nd ed.]."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Ashida, K. (2007). Polyurethane and Related Foams: Chemistry and Technology, CRC\/Taylor & Francis.","DOI":"10.1201\/9780203505991"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Defonseka, C. (2019). Flexible Polyurethane Foams: A Practical Guide, De Gruyter.","DOI":"10.1515\/9783110643183"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"9422","DOI":"10.1002\/anie.201302766","article-title":"Polyurethanes: Versatile materials and sustainable problem solvers for today\u2019s challenges","volume":"52","author":"Engels","year":"2013","journal-title":"Angew. Chem."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Gama, N.V., Ferreira, A., and Barros-Timmons, A. (2018). Polyurethane Foams: Past, Present, and Future. Materials, 11.","DOI":"10.3390\/ma11101841"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Sharmin, E., and Zafar, F. (2012). Polyurethane: An Introduction. Polyurethane, InTech.","DOI":"10.5772\/51663"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Szycher, M. (2012). Szycher\u2019s Handbook of Polyurethanes, CRC Press. [2nd ed.].","DOI":"10.1201\/b12343"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1002\/cite.330670327","article-title":"Kunststoff-Handbuch, Band 7: Polyurethane. Von G. Oertel Carl Hanser Verlag, M\u00fcnchen 1993","volume":"67","author":"Stutz","year":"1995","journal-title":"Chem. Ing. Tech."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2351","DOI":"10.1016\/S0032-3950(68)80039-5","article-title":"Thermal-oxidative degradation of the simpler polyalkyleneoxides","volume":"9","author":"Goglev","year":"1968","journal-title":"Polym. Sci. U.S.S.R."},{"key":"ref_10","first-page":"2020","article-title":"No 282.\u2014\u00c9tude cin\u00e9tique de l\u2019oxydation des poly\u00e9thers en phase liquide","volume":"5","author":"Grosborne","year":"1968","journal-title":"Bull. Soc. Chim. Fr."},{"key":"ref_11","first-page":"2260","article-title":"\u00c9tude cin\u00e9tique de l\u2019oxydation des \u00e9thers en phase liquide: par Philippe Grosborne et Ir\u00e9n\u00e9e Ser\u00e9e de Roch. Institut Francais du Petrole, Rueil-Malmaison","volume":"1967","author":"Grosborne","year":"1967","journal-title":"Bull. Soc. Chim. Fr."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1002\/masy.19991430110","article-title":"Photooxidative degradation of polyether-based polymers","volume":"143","author":"Gardette","year":"1999","journal-title":"Macromol. Symp."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1815","DOI":"10.1002\/macp.1987.021880805","article-title":"Photo-oxydation de poly\u00e9ther-bloc-polyamides, 3\u2020. Propri\u00e9t\u00e9s des hydroperoxydes dans les homopolymres de poly\u00e9thers correspondants","volume":"188","author":"Gauvin","year":"1987","journal-title":"Die Makromol. Chem."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1016\/0141-3910(91)90114-7","article-title":"Studies on the thermooxidation of ethers and polyethers: Part I\u2014The uninhibited thermooxidation of a polyether","volume":"34","author":"Habicher","year":"1991","journal-title":"Polym. Degrad. Stab."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"611","DOI":"10.1002\/prac.19893310410","article-title":"Oxidative decomposition of oxirane and methyloxirane polyethers. II. Autoxidation of Dipropylene Glycol Isomers","volume":"331","author":"Janik","year":"1989","journal-title":"J. Prakt. Chem."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"488","DOI":"10.1016\/j.nimb.2005.04.025","article-title":"Degradation kinetics of poly(ether-urethane) Estane\u00ae induced by electron irradiation","volume":"236","author":"Dannoux","year":"2005","journal-title":"Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. At."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Sandten, C.S., Kreyenschmidt, M., Albach, R., and Fittschen, U.E.A. (2024). The Thermo-Oxidative Degradation of Polyurethane Open-Cell Soft Foam Investigated Through Gas Chromatography and Mass Spectrometry of Volatile Organic Compounds. Polymers, 16.","DOI":"10.3390\/polym16233342"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"134747","DOI":"10.1016\/j.jhazmat.2024.134747","article-title":"The autoxidation of polyether-polyurethane open cell soft foam: An analytical aging method to reproducibly determine VOC emissions caused by thermo-oxidative degradation","volume":"474","author":"Sandten","year":"2024","journal-title":"J. Hazard. Mater."},{"key":"ref_19","unstructured":"Europur (2023). REACH Restriction on Formaldehyde Released from Articles, Europur."},{"key":"ref_20","unstructured":"(2025, April 04). ANNEX to the COMMISSION REGULATION (EU) \u2026\/\u2026 of XXX: Amending Annex XVII to Regulation (EC) No 1907\/2006 of the European Parliament and of the Council as Regards Formaldehyde and Formaldehyde Releasers. Available online: https:\/\/data.consilium.europa.eu\/doc\/document\/ST-6423-2023-ADD-1\/en\/pdf."},{"key":"ref_21","unstructured":"(2025, October 01). Commission Regulation (EU) \u2026\/\u2026 of XXX: Amending Annex XVII to Regulation (EC) No 1907\/2006 of the European Parliament and of the Council as Regards Formaldehyde and Formaldehyde Releasers. Available online: https:\/\/www.wko.at\/oe\/news\/act-formaldehyde-restriction-5-april-2022.pdf#:~:text=Moreover%2C%20the%20Annex%20XV%20dossier%20specified%20that,of%20formaldehyde%20to%20consumers%20can%20occur%20there."},{"key":"ref_22","unstructured":"NAC\/AEGL FACA Committee (2008). Interim Acute Exposure Guideline Levels (Aegls) for Formaldehyde: (CAS Reg. No. 50-00-0) 2008."},{"key":"ref_23","unstructured":"National Academies of Sciences, Engineering, and and Medicine (2023). Review of EPA\u2019s 2022 Draft Formaldehyde Assessment (2023), The National Academies Press."},{"key":"ref_24","unstructured":"(2026, February 05). Publications Office of the European Union, L-2985 Luxembourg. Commission Regulation (EU) 2023\/1464 of 14 July 2023 Amending Annex XVII to Regulation (EC) No 1907\/2006 of the European Parliament and of the Council as Regards Formaldehyde and Formaldehyde Releasers: (Text with EEA relevance). Official Journal of the European Union, 2023; L 180\/12\u2013L 180\/20. Available online: https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/PDF\/?uri=CELEX:32023R1464."},{"key":"ref_25","unstructured":"US EPA, ORD, and Integrated Risk Information System Division (2024). Chemical Assessment Summary\u2014Formaldehyde (CASRN50-00-0)|IRIS|, U.S.E.P.A. U.S. Environmental Protection Agency."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"156201","DOI":"10.1016\/j.scitotenv.2022.156201","article-title":"Chemicals in European residences\u2014Part I: A review of emissions, concentrations and health effects of volatile organic compounds (VOCs)","volume":"839","author":"Halios","year":"2022","journal-title":"Sci. Total Environ."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1895","DOI":"10.1080\/10408347.2022.2136484","article-title":"Sampling Volatile Organic Compound Emissions from Consumer Products: A Review","volume":"54","author":"Haug","year":"2022","journal-title":"Crit. Rev. Anal. Chem."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.msec.2013.11.032","article-title":"Impact of indoor surface material on perceived air quality","volume":"36","author":"Senitkova","year":"2014","journal-title":"Mater. Sci. Eng. C Mater. Biol. Appl."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"9018","DOI":"10.1016\/j.atmosenv.2008.09.052","article-title":"Semivolatile organic compounds in indoor environments","volume":"42","author":"Weschler","year":"2008","journal-title":"Atmos. Environ."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1111\/ina.12198","article-title":"Understanding and controlling airborne organic compounds in the indoor environment: Mass transfer analysis and applications","volume":"26","author":"Zhang","year":"2016","journal-title":"Indoor Air"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1016\/j.envres.2014.07.015","article-title":"Health effects associated with faulty application of spray polyurethane foam in residential homes","volume":"134","author":"Huang","year":"2014","journal-title":"Environ. Res."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"106559","DOI":"10.1016\/j.buildenv.2019.106559","article-title":"Polyurethane insulation and household products\u2014A systematic review of their impact on indoor environmental quality","volume":"169","author":"Naldzhiev","year":"2020","journal-title":"Build. Environ."},{"key":"ref_33","first-page":"784","article-title":"Derivation of indoor air guidance values for volatile organic compounds (VOC) emitted from polyurethane flexible foam: VOC with repeated dose toxicity data","volume":"17","author":"Schupp","year":"2018","journal-title":"EXCLI J."},{"key":"ref_34","first-page":"1","article-title":"Evaluation of Dynamic Microchamber as a Quick Factory Formaldehyde Emission Control Method for Industrial Particleboards","volume":"2018","author":"Zabka","year":"2018","journal-title":"Adv. Mater. Sci. Eng."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1007\/s11676-013-0333-1","article-title":"Evaluation of formaldehyde emission from particleboard using the large chamber and desiccator method at various loading ratios","volume":"24","author":"Que","year":"2013","journal-title":"J. For. Res."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"102420","DOI":"10.1016\/j.ijadhadh.2019.102420","article-title":"Influencing factors, repeatability and correlation of chamber methods in measuring formaldehyde emissions from fiber- and particleboards","volume":"95","author":"Meyer","year":"2019","journal-title":"Int. J. Adhes. Adhes."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1016\/j.ecoenv.2014.07.008","article-title":"Emissions of amides (N,N-dimethylformamide and formamide) and other obnoxious volatile organic compounds from different mattress textile products","volume":"114","author":"Kim","year":"2015","journal-title":"Ecotoxicol. Environ. Saf."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1177\/026248930302200402","article-title":"An Investigation into VOC Emissions from Polyurethane Flexible Foam Mattresses","volume":"22","author":"Hillier","year":"2003","journal-title":"Cell. Polym."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1177\/026248930902800201","article-title":"Study of Odours Coming Out of Polyurethane Flexible Foam Mattresses","volume":"28","author":"KHillier","year":"2009","journal-title":"Cell. Polym."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"110507","DOI":"10.1016\/j.polymdegradstab.2023.110507","article-title":"Volatile emissions of flexible polyurethane foams as a function of time","volume":"216","author":"Mentes","year":"2023","journal-title":"Polym. Degrad. Stab."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"9171","DOI":"10.1021\/acs.est.9b01557","article-title":"Volatile Organic Compound Emissions from Polyurethane Mattresses under Variable Environmental Conditions","volume":"53","author":"Oz","year":"2019","journal-title":"Environ. Sci. Technol."},{"key":"ref_42","first-page":"995","article-title":"VOC emissions from particle filtering half masks\u2014Methods, risks and need for further action","volume":"20","author":"Kerkeling","year":"2021","journal-title":"EXCLI J."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/j.atmosenv.2012.02.088","article-title":"Concerns regarding 24-h sampling for formaldehyde, acetaldehyde, and acrolein using 2,4-dinitrophenylhydrazine (DNPH)-coated solid sorbents","volume":"55","author":"Herrington","year":"2012","journal-title":"Atmos. Environ."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1016\/j.atmosenv.2010.09.042","article-title":"Unsuitability of using the DNPH-coated solid sorbent cartridge for determination of airborne unsaturated carbonyls","volume":"45","author":"Ho","year":"2011","journal-title":"Atmos. Environ."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"1803","DOI":"10.1039\/c0ay00418a","article-title":"A comparative study of selected sorbents for sampling of aromatic VOCs from indoor air","volume":"2","author":"Idris","year":"2010","journal-title":"Anal. Methods"},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Even, M., Wilke, O., Kalus, S., Schultes, P., Hutzler, C., and Luch, A. (2021). Formaldehyde Emissions from Wooden Toys: Comparison of Different Measurement Methods and Assessment of Exposure. Materials, 14.","DOI":"10.3390\/ma14020262"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1177\/1420326X20908918","article-title":"Correlation between formaldehyde emission characteristics in enclosed desiccators with five different geometries","volume":"30","author":"Kang","year":"2021","journal-title":"Indoor Built Environ."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"116979","DOI":"10.1016\/j.atmosenv.2019.116979","article-title":"Distribution of transient formaldehyde concentration in confined small glass desiccators and its impact on emission rate measurement","volume":"218","author":"Kang","year":"2019","journal-title":"Atmos. Environ."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"288","DOI":"10.1016\/j.atmosenv.2014.09.078","article-title":"Partially-irreversible sorption of formaldehyde in five polymers","volume":"99","author":"Ye","year":"2014","journal-title":"Atmos. Environ."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"23388","DOI":"10.1038\/srep23388","article-title":"Influence of humidity on the initial emittable concentration of formaldehyde and hexaldehyde in building materials: Experimental observation and correlation","volume":"6","author":"Huang","year":"2016","journal-title":"Sci. Rep."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1016\/j.proeng.2015.08.1019","article-title":"The Impact of Relative Humidity on the Emission Behaviour of Formaldehyde in Building Materials","volume":"121","author":"Huang","year":"2015","journal-title":"Procedia Eng."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1016\/j.buildenv.2016.03.008","article-title":"The effect of humidity on formaldehyde emission parameters of a medium-density fiberboard: Experimental observations and correlations","volume":"101","author":"Liang","year":"2016","journal-title":"Build. Environ."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"102114","DOI":"10.1016\/j.jobe.2020.102114","article-title":"Impact of humidity on formaldehyde and moisture buffering capacity of porous building material","volume":"36","author":"Zhang","year":"2021","journal-title":"J. Build. Eng."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1007\/s10965-021-02524-y","article-title":"The effect of metal salts on polyurethane foam: Antioxidation and reduction of VOCs emissions","volume":"28","author":"Huang","year":"2021","journal-title":"J. Polym. Res."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1016\/j.chroma.2013.12.064","article-title":"Accurate determination of aldehydes in amine catalysts or amines by 2,4-dinitrophenylhydrazine derivatization","volume":"1327","author":"Barman","year":"2014","journal-title":"J. Chromatogr. A"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"821","DOI":"10.1080\/10408440600977669","article-title":"Formaldehyde and glutaraldehyde and nasal cytotoxicity: Case study within the context of the 2006 IPCS Human Framework for the Analysis of a cancer mode of action for humans","volume":"36","author":"McGregor","year":"2006","journal-title":"Crit. Rev. Toxicol."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1080\/10937400306480","article-title":"Inhaled formaldehyde: Exposure estimation, hazard characterization, and exposure-response analysis","volume":"6","author":"Liteplo","year":"2003","journal-title":"J. Toxicol. Environ. Health Part B Crit. Rev."},{"key":"ref_58","unstructured":"Huang, S., Xiong, J., and Zhang, Y. (2014, January 7\u201312). Influence of temperature on the initial emittable concentration of formaldehyde in building materials: Interpretation and validation. Proceedings of the 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, China."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1111\/j.1600-0668.2010.00675.x","article-title":"Impact of temperature on the initial emittable concentration of formaldehyde in building materials: Experimental observation","volume":"20","author":"Xiong","year":"2010","journal-title":"Indoor Air"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"3203","DOI":"10.1016\/j.atmosenv.2006.10.081","article-title":"Influence of temperature on formaldehyde emission parameters of dry building materials","volume":"41","author":"Zhang","year":"2007","journal-title":"Atmos. Environ."},{"key":"ref_61","doi-asserted-by":"crossref","unstructured":"Xiong, J., Yang, T., Tan, J., Li, L., and Ge, Y.-S. (2015). Characterization of VOC Emission from Materials in Vehicular Environment at Varied Temperatures: Correlation Development and Validation. PLoS ONE, 10.","DOI":"10.1371\/journal.pone.0140081"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1111\/ina.12076","article-title":"Diffusion-controlled reference material for VOC emissions testing: Effect of temperature and humidity","volume":"24","author":"Liu","year":"2014","journal-title":"Indoor Air"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1177\/1420326X18761114","article-title":"Association between the emissions of volatile organic compounds from vehicular cabin materials and temperature: Correlation and exposure analysis","volume":"28","author":"Yang","year":"2019","journal-title":"Indoor Built Environ."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1016\/j.polymertesting.2018.04.025","article-title":"Compositional elements of thermoplastic polyurethanes for reducing the generation of acetaldehyde during thermo-oxidative degradation","volume":"68","author":"Choi","year":"2018","journal-title":"Polym. Test."},{"key":"ref_65","unstructured":"Poppendieck, D., Gong, M., and Lawson, L. (2016). Lessons Learned from Spray Polyurethane Foam Emission Testing Using Micro-Chambers, American Chemistry Council."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"230","DOI":"10.1016\/j.buildenv.2017.06.005","article-title":"Reproducibly emitting reference material on thermoplastic polyurethane basis for quality assurance\/quality control of emission test chamber measurements","volume":"122","author":"Richter","year":"2017","journal-title":"Build. Environ."},{"key":"ref_67","first-page":"158","article-title":"Influence of molecular parameters on the sink effect in test chambers","volume":"16","author":"Uhde","year":"2006","journal-title":"Indoor Air"},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1034\/j.1600-0668.2003.00146.x","article-title":"Comparison of three small chamber test methods for the measurement of VOC emission rates from paint","volume":"13","author":"Afshari","year":"2003","journal-title":"Indoor Air"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1016\/j.buildenv.2008.04.015","article-title":"Evaluation of impact factors on VOC emissions and concentrations from wooden flooring based on chamber tests","volume":"44","author":"Lin","year":"2009","journal-title":"Build. Environ."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1111\/ina.12605","article-title":"Emissions of volatile organic compounds from polymer-based consumer products: Comparison of three emission chamber sizes","volume":"30","author":"Even","year":"2020","journal-title":"Indoor Air"},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1002\/macp.1973.021720105","article-title":"\u00dcber den photochemischen Abbau von Polyurethanen","volume":"172","author":"Schultze","year":"1973","journal-title":"Die Makromol. Chem."},{"key":"ref_72","unstructured":"Verband der Automobilindustrie (2002). Thermodesorptionsanalyse Organischer Emissionen zur Charakterisierung von Nichtmetallischen KFZ-Werkstoffen(VDA 278), Verband der Automobilindustrie."},{"key":"ref_73","doi-asserted-by":"crossref","unstructured":"Eling, B., and Friederichs, W. (2025). Polyurethanes, De Gruyter. [1st ed.]. Erscheinungsort Nicht Ermittelbar.","DOI":"10.1515\/9783110744583"},{"key":"ref_74","unstructured":"Pierau, S. (1997). Neue Methoden zur Diastereo- und Enantioselektiven Synthese von 8-oxabicyclo(3.2.1)oct-6-en-3-onen, Gottfried Wilhelm Leibniz Universit\u00e4t Hannover."},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"8202","DOI":"10.1021\/acs.joc.9b01319","article-title":"Design Principles for Rational Polyurethane Catalyst Development","volume":"84","author":"Muuronen","year":"2019","journal-title":"J. Org. Chem."},{"key":"ref_76","doi-asserted-by":"crossref","unstructured":"Fitzer, E., Fritz, W., and Emig, G. (1995). Technische Chemie: Einf\u00fchrung in Die Chemische Reaktionstechnik, Springer.","DOI":"10.1007\/978-3-662-10229-9"},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"7834","DOI":"10.1039\/C6CC02578A","article-title":"Microporous polyurethane material for size selective heterogeneous catalysis of the Knoevenagel reaction","volume":"52","author":"Dey","year":"2016","journal-title":"Chem. Commun."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"3341","DOI":"10.1016\/j.jas.2012.05.032","article-title":"Tetraethylene glycol thermooxidation and the influence of certain compounds relevant to conserved archaeological wood","volume":"39","author":"Mortensen","year":"2012","journal-title":"J. Archaeol. Sci."},{"key":"ref_79","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1002\/pol.1959.1203613015","article-title":"Thermal degradation of polyethylene oxide and polypropylene oxide","volume":"36","author":"Madorsicy","year":"1959","journal-title":"J. Polym. Sci."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"37","DOI":"10.3891\/acta.chem.scand.38b-0037","article-title":"Autoxidation of Allyl Ether Compounds. Part 1. Reactivity of Allyl Ether Alcohols","volume":"38b","author":"Toivonen","year":"1984","journal-title":"Acta Chem. Scand."},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"63","DOI":"10.3891\/acta.chem.scand.38b-0063","article-title":"Autoxidation of Allyl Ether Compounds. Part II. Reactivity of Alkyl Allyl Ethers","volume":"38b","author":"Toivonen","year":"1984","journal-title":"Acta Chem. Scand."},{"key":"ref_82","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/S0141-3910(02)00079-4","article-title":"Thermal oxidation of poly(ethylene oxide\u2013propylene oxide\u2013ethylene oxide) triblock copolymer: Focus on low molecular weight degradation products","volume":"77","author":"Gallet","year":"2002","journal-title":"Polym. Degrad. Stab."},{"key":"ref_83","doi-asserted-by":"crossref","first-page":"1081","DOI":"10.1016\/S0032-3861(01)00677-2","article-title":"Thermal degradation of poly(ethylene oxide\u2013propylene oxide\u2013ethylene oxide) triblock copolymer: Comparative study by SEC\/NMR, SEC\/MALDI-TOF-MS and SPME\/GC-MS","volume":"43","author":"Gallet","year":"2002","journal-title":"Polymer"},{"key":"ref_84","doi-asserted-by":"crossref","first-page":"3929","DOI":"10.1021\/ja01180a014","article-title":"Thermal Decomposition of Amine Oxides to Olefins and Dialkylhydroxylamines","volume":"71","author":"Cope","year":"1949","journal-title":"J. Am. Chem. Soc."},{"key":"ref_85","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1016\/j.aca.2003.12.063","article-title":"Extractable organic compounds in polyurethane foam with special reference to aromatic amines and derivatives thereof","volume":"510","author":"Marand","year":"2004","journal-title":"Anal. Chim. Acta"},{"key":"ref_86","doi-asserted-by":"crossref","first-page":"2084","DOI":"10.1016\/0032-3861(92)90874-V","article-title":"Polyurethanes: Effect of chemical composition on mechanical properties and oxygen permeability","volume":"33","author":"Ulubayram","year":"1992","journal-title":"Polymer"},{"key":"ref_87","doi-asserted-by":"crossref","unstructured":"Stahl, S.S., and Alsters, P.L. (2016). Liquid Phase Aerobic Oxidation Catalysis: Industrial Applications and Academic Perspectives, Wiley-VCH Verlag GmbH & Co. KgaA.","DOI":"10.1002\/9783527690121"},{"key":"ref_88","doi-asserted-by":"crossref","first-page":"15608","DOI":"10.1021\/acsomega.1c00165","article-title":"Density Functional Theory Guide for an Allyl Monomer Polymerization Mechanism: Photoinduced Radical-Mediated 3 + 2 Cyclization","volume":"6","author":"Zhao","year":"2021","journal-title":"ACS Omega"},{"key":"ref_89","doi-asserted-by":"crossref","first-page":"9787","DOI":"10.1021\/ja00051a010","article-title":"Homolytic bond dissociation energies of the benzylic carbon-hydrogen bonds in radical anions and radical cations derived from fluorenes, triphenylmethanes, and related compounds","volume":"114","author":"Zhang","year":"1992","journal-title":"J. Am. Chem. Soc."},{"key":"ref_90","doi-asserted-by":"crossref","first-page":"1641","DOI":"10.1023\/A:1021335001753","article-title":"Estimation of dissociation energies of C\u2014H bonds in oxygen-containing compounds from kinetic data for radical abstraction reactions","volume":"51","author":"Tumanov","year":"2002","journal-title":"Russ. Chem. Bull."},{"key":"ref_91","unstructured":"(2013). Innenraumluft von Stra\u00dfenfahrzeugen\u2014Teil 4: Verfahren f\u00fcr die Bestimmung von Fl\u00fcchtigen Organischen Verbindungen aus Fahrzeuginnenraumausstattungsteilen\u2014Kleinpr\u00fcfkammer-Verfahren (ISO 12219-4:2013) (Standard No. DIN ISO 12219-4)."},{"key":"ref_92","first-page":"509","article-title":"Side Reactions in the Formation of Polyurethanes: Stability of Reaction Products of Phenyl Isocyanate","volume":"27","year":"1990","journal-title":"J. Macromol. Sci. Part A\u2014Chem."},{"key":"ref_93","doi-asserted-by":"crossref","first-page":"395","DOI":"10.1002\/app.1987.070340131","article-title":"Flexible polyurethane foam. I. FTIR analysis of residual isocyanate","volume":"34","author":"Cole","year":"1987","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_94","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1016\/j.buildenv.2013.02.012","article-title":"Predicting emissions of volatile and semivolatile organic compounds from building materials: A review","volume":"64","author":"Liu","year":"2013","journal-title":"Build. Environ."},{"key":"ref_95","doi-asserted-by":"crossref","first-page":"2497","DOI":"10.1016\/S1352-2310(03)00160-2","article-title":"An improved mass transfer based model for analyzing VOC emissions from building materials","volume":"37","author":"Xu","year":"2003","journal-title":"Atmos. Environ."},{"key":"ref_96","unstructured":"Volatile Organic Compounds (2024). Handling, Packaging, and Conditioning of Materials and Components Used in Automotive Interiors for Emissions Testing, SAE International."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/18\/4\/496\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T10:36:12Z","timestamp":1771929372000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/18\/4\/496"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,16]]},"references-count":96,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2026,2]]}},"alternative-id":["polym18040496"],"URL":"https:\/\/doi.org\/10.3390\/polym18040496","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,16]]}}}