{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T16:27:46Z","timestamp":1773851266630,"version":"3.50.1"},"reference-count":46,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T00:00:00Z","timestamp":1773792000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008766","name":"innovative funding of Fujian Agriculture and Forestry University","doi-asserted-by":"publisher","award":["KFB23141"],"award-info":[{"award-number":["KFB23141"]}],"id":[{"id":"10.13039\/501100008766","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>It is essential to develop a practical technology for the separation and capture of carbon dioxide (CO2) due to the gradually increased concentration of CO2 in the atmosphere, which has driven the rise in global temperature. Membrane separation is regarded as a promising technology for the capture of CO2. However, most membranes employ non-biodegradable petroleum-based polymers. In this study, biodegradable and renewable membranes of cellulose acetate (CA) doped with polyethylene glycol (PEG) and polyethylene glycol diacrylate (PEGDA) were fabricated by solution casting and used for the separation of CO2\/O2. The results indicated that the membrane doped with PEGDA exhibited higher permeability of CO2 and selectivity of CO2\/O2 compared to those doped with PEG, while improving the tensile strain and structural uniformity of membranes. The membrane with a thickness of 25 \u03bcm at a PEGDA dosage of 10 wt% achieved optimal gas permeability, selectivity, and mechanical toughness, showing CO2 permeability of 4.59 Barrer and CO2\/O2 selectivity of 5.68. The structure of the interpenetrating polymer network was responsible for the excellent properties of the membrane doped with PEGDA due to the formation of more mid- and micro-sized pores that increase the diffusion pathways of CO2.<\/jats:p>","DOI":"10.3390\/polym18060740","type":"journal-article","created":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T10:11:12Z","timestamp":1773828672000},"page":"740","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fabrication of Cellulose Acetate-Based Membrane Doped with Plasticizer for High-Efficiency Separation of CO2"],"prefix":"10.3390","volume":"18","author":[{"given":"Jin","family":"Li","sequence":"first","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhongyong","family":"Su","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tiantian","family":"Jia","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kai","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liulian","family":"Huang","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fang","family":"Huang","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3110-0552","authenticated-orcid":false,"given":"Xiaolin","family":"Luo","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1147-4864","authenticated-orcid":false,"given":"Jianguo","family":"Li","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingxian","family":"Miao","sequence":"additional","affiliation":[{"name":"College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"nwae367","DOI":"10.1093\/nsr\/nwae367","article-title":"Low latency carbon budget analysis reveals a large decline of the land carbon sink in 2023","volume":"11","author":"Ke","year":"2024","journal-title":"Natl. Sci. Rev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"6999","DOI":"10.1021\/ma501488s","article-title":"Gas Separation Membrane Materials: A perspective","volume":"47","author":"Baker","year":"2014","journal-title":"Macromolecules"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"154900","DOI":"10.1016\/j.apsusc.2022.154900","article-title":"Concurrent enhancement of CO2-philic pathway and interfacial compatibilization in ZIF-67 based polysulfone membranes through [Bmim][Tf2N] for CO2 separation","volume":"606","author":"Sasikumar","year":"2022","journal-title":"Appl. Surf. Sci."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"129154","DOI":"10.1016\/j.seppur.2024.129154","article-title":"Convenient preparation of inexpensive sandwich-type poly(vinylidene fluoride)\/molecular sieve\/ethyl cellulose mixed matrix membranes and their effective pre-exploration for the selective separation of CO2 in large-scale industrial utilization","volume":"354","author":"Xu","year":"2025","journal-title":"Sep. Purif. Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"124050","DOI":"10.1016\/j.seppur.2023.124050","article-title":"Simultaneous production of high-quality CO2 and CH4 via multistage process using chitosan-based membranes","volume":"320","author":"Garea","year":"2023","journal-title":"Sep. Purif. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Patra, N., Ramesh, P., and \u021a\u0103lu, \u0218. (2025). Advancements in cellulose-based materials for CO2 capture and conversion. Polymers, 17.","DOI":"10.3390\/polym17070848"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"4769","DOI":"10.1039\/D3GC00658A","article-title":"A lignin-based membrane fabricated with a deep eutectic solvent","volume":"25","author":"Gebreyohannes","year":"2023","journal-title":"Green Chem."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"118178","DOI":"10.1016\/j.carbpol.2021.118178","article-title":"A review on chitosan-based membranes for sustainable CO2 separation applications: Mechanism, issues, and the way forward","volume":"267","author":"Borgohain","year":"2021","journal-title":"Carbohydr. Polym."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"121296","DOI":"10.1016\/j.carbpol.2023.121296","article-title":"A review of cellulose-based derivatives polymers in fabrication of gas separation membranes: Recent developments and challenges","volume":"321","author":"Pekgenc","year":"2023","journal-title":"Carbohydr. Polym."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"e54316","DOI":"10.1002\/app.54316","article-title":"Investigation of the influence of plasticizers on the biodegradability of cellulose acetate","volume":"140","author":"Teixeira","year":"2023","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1007\/s10924-010-0258-0","article-title":"Degradation of cellulose acetate-based materials: A review","volume":"19","author":"Puls","year":"2011","journal-title":"J. Polym. Environ."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"101095","DOI":"10.1016\/j.pecs.2023.101095","article-title":"Polyurethane-based membranes for CO2 separation: A comprehensive review","volume":"97","author":"Ahmadijokani","year":"2023","journal-title":"Prog. Energy Combust. Sci."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"911","DOI":"10.1007\/BF02675748","article-title":"IR spectra and the structure of plasticized cellulose acetate films","volume":"65","author":"Skornyakov","year":"1998","journal-title":"J. Appl. Spectrosc."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"100144","DOI":"10.1016\/j.advmem.2025.100144","article-title":"Swelling polymer-regulated green synthesis of flexible ZIF-8 membrane","volume":"5","author":"Ma","year":"2025","journal-title":"Adv. Membr."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"12895","DOI":"10.1021\/acssuschemeng.2c04806","article-title":"Tunable gas permeation behavior in self-standing cellulose nanocrystal-based membranes","volume":"10","author":"Jaekel","year":"2022","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"112360","DOI":"10.1016\/j.eurpolymj.2023.112360","article-title":"Plasticizer design strategies enabling advanced applications of cellulose acetate","volume":"197","author":"Bonifacio","year":"2023","journal-title":"Eur. Polym. J."},{"key":"ref_17","first-page":"S707","article-title":"Mixed and single gas permeation performance analysis of amino-modified ZIF based mixed matrix membrane","volume":"29","author":"Salahuddin","year":"2021","journal-title":"Polym. Polym. Compos."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1080\/0371750X.2021.1880969","article-title":"Thickness effect on permeance of CO2\/CH4 gases in CA coated PVDF composite membranes","volume":"80","author":"Raza","year":"2021","journal-title":"Trans. Indian Ceram. Soc."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"19560","DOI":"10.1039\/D4RA01315H","article-title":"A review on recent advances of cellulose acetate membranes for gas separation","volume":"14","author":"Bashir","year":"2024","journal-title":"RSC Adv."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"17085","DOI":"10.1021\/acs.energyfuels.1c01638","article-title":"Poly(ether-block-amide) copolymer membranes in CO2 separation applications","volume":"35","author":"Embaye","year":"2021","journal-title":"Energy Fuels"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"7989","DOI":"10.1002\/er.5448","article-title":"Development of high performance amine functionalized zeolitic imidazolate framework (ZIF-8)\/cellulose triacetate mixed matrix membranes for CO2\/CH4 separation","volume":"44","author":"Raza","year":"2020","journal-title":"Int. J. Energy Res."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"e54650","DOI":"10.1002\/app.54650","article-title":"Investigation of ZIF-8, amine-modified ZIF-8 and polysulfone based mixed matrix membranes for CO2\/CH4 separation","volume":"140","author":"Jonnalagedda","year":"2023","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_23","unstructured":"(2023). Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting (Standard No. ASTM D1434-23)."},{"key":"ref_24","unstructured":"(2022). Plastics\u2014Film and Sheeting\u2014Determination of Gas-Transmission Rate\u2014Part 1: Differential-Pressure Methods (Standard No. GB\/T 1038.1-2022)."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"6265","DOI":"10.1021\/acsapm.2c01080","article-title":"Synthesis and gas separation properties of aromatic polyimides containing noncoplanar rigid sites","volume":"4","author":"Tong","year":"2022","journal-title":"ACS Appl. Polym. Mater."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"186","DOI":"10.1038\/s41524-024-01373-9","article-title":"Gas permeability, diffusivity, and solubility in polymers: Simulation-experiment data fusion and multi-task machine learning","volume":"10","author":"Phan","year":"2024","journal-title":"npj Comput. Mater."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"4855","DOI":"10.1007\/s10924-024-03273-x","article-title":"Enhancing the CO2\/CH4 separation properties of cellulose acetate membranes using polyethylene glycol methyl ether acrylate radiation grafting","volume":"32","author":"Febriasari","year":"2024","journal-title":"J. Polym. Environ."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Fong, R.J., Robertson, A., Mallon, P.E., and Thompson, R.L. (2018). The impact of plasticizer and degree of hydrolysis on free volume of poly(vinyl alcohol) films. Polymers, 10.","DOI":"10.3390\/polym10091036"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"119749","DOI":"10.1016\/j.memsci.2021.119749","article-title":"Nanofibers interpenetrating network mimicking \u201creinforced-concrete\u201d to construct mechanically robust composite membrane for enhanced CO2 separation","volume":"639","author":"Sun","year":"2021","journal-title":"J. Membr. Sci."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Zhang, Z., Zhao, Z., Lu, Y., Wang, D., Wang, C., and Li, J. (2021). One-step synthesis of Eu3+-modified cellulose acetate film and light conversion mechanism. Polymers, 13.","DOI":"10.3390\/polym13010113"},{"key":"ref_31","first-page":"42159","article-title":"Heavy metal rejection performance and mechanical performance of cellulose-nanofibril-reinforced cellulose acetate membranes","volume":"98","author":"Pir","year":"2024","journal-title":"ACS Omega"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"229235","DOI":"10.1016\/j.jpowsour.2020.229235","article-title":"A cross-linked gel polymer electrolyte employing cellulose acetate matrix and layered boron nitride filler prepared via in situ thermal polymerization","volume":"484","author":"Liu","year":"2021","journal-title":"J. Power Sources"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1016\/j.memsci.2010.06.045","article-title":"Separation performance of asymmetric membranes based on PEGDa\/PEI semi-interpenetrating polymer network in pure and binary gas mixtures of CO2, N2 and CH4","volume":"362","author":"Saimani","year":"2010","journal-title":"J. Membr. Sci."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"4638","DOI":"10.1021\/ie8019032","article-title":"Membrane gas separation: A review\/state of the art","volume":"48","author":"Bernardo","year":"2009","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"5261","DOI":"10.1021\/acs.iecr.9b00241","article-title":"Cross-linked PEG membranes of interpenetrating networks with ionic liquids as additives for enhanced CO2 separation","volume":"58","author":"Deng","year":"2019","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"125586","DOI":"10.1016\/j.colsurfa.2020.125586","article-title":"Coupling electrohydrodynamics with photopolymerization for microfluidics-based generation of polyethylene glycol diacrylate (PEGDA) microparticles and hydrogels","volume":"608","author":"Pullagura","year":"2021","journal-title":"Colloids Surf. A Physicochem. Eng. Asp."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"59946","DOI":"10.1039\/C6RA10475D","article-title":"Enhanced CO2 separation performance of P(PEGMA-co-DEAEMA-co-MMA) copolymer membrane through the synergistic effect of EO groups and amino groups","volume":"6","author":"Dong","year":"2016","journal-title":"RSC Adv."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"198","DOI":"10.1016\/j.memsci.2017.12.033","article-title":"High performance mixed matrix membranes (MMMs) composed of ZIF-94 filler and 6FDA-DAM polymer","volume":"550","author":"David","year":"2018","journal-title":"J. Membr. Sci."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1051","DOI":"10.1515\/pac-2014-1117","article-title":"Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report)","volume":"87","author":"Thommes","year":"2015","journal-title":"Pure Appl. Chem."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"32340","DOI":"10.1039\/C6RA01932C","article-title":"Comparison of hyper-cross-linked polystyrene\/polyacryldiethylenetriamine (HCP\/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): Structure, adsorption and separation properties","volume":"6","author":"Fu","year":"2016","journal-title":"RSC Adv."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1016\/j.memsci.2005.06.004","article-title":"The effects of 1,3-cyclohexanebis(methylamine) modification on gas transport and plasticization resistance of polyimide membranes","volume":"267","author":"Shao","year":"2005","journal-title":"J. Membr. Sci."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1016\/j.seppur.2010.11.033","article-title":"Hollow silicalite-1 sphere-polymer mixed matrix membranes for gas separation","volume":"77","author":"Zornoza","year":"2011","journal-title":"Sep. Purif. Technol."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/S0376-7388(02)00385-X","article-title":"Characterization of permeability and sorption in Matrimid\/C60 mixed matrix membranes","volume":"211","author":"Chung","year":"2003","journal-title":"J. Membr. Sci."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"9737","DOI":"10.1039\/C8RA10550B","article-title":"Synthesis and gas transport properties of polyamide membranes containing PDMS groups","volume":"9","author":"Ren","year":"2019","journal-title":"RSC Adv."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"16921","DOI":"10.1039\/D4TA02376E","article-title":"Retarded O2 transport in Co2+-coordinated supramolecular polymer networks for membrane CO2\/O2 separations","volume":"12","author":"Alebrahim","year":"2024","journal-title":"J. Mater. Chem. A"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"126461","DOI":"10.1016\/j.seppur.2024.126461","article-title":"PDMS-based artificial lung membranes with enhanced permeation to overcome the bottleneck in CO2\/O2 selectivity","volume":"337","author":"Wang","year":"2024","journal-title":"Sep. Purif. Technol."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/18\/6\/740\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T10:17:39Z","timestamp":1773829059000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/18\/6\/740"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,3,18]]},"references-count":46,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2026,3]]}},"alternative-id":["polym18060740"],"URL":"https:\/\/doi.org\/10.3390\/polym18060740","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,3,18]]}}}