{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T01:11:44Z","timestamp":1779930704037,"version":"3.53.1"},"reference-count":26,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2020,9,30]],"date-time":"2020-09-30T00:00:00Z","timestamp":1601424000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004329","name":"Javna Agencija za Raziskovalno Dejavnost RS","doi-asserted-by":"publisher","award":["Program P2-0213 Tekstilije in ekologija"],"award-info":[{"award-number":["Program P2-0213 Tekstilije in ekologija"]}],"id":[{"id":"10.13039\/501100004329","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The chemical composition of rainwater can serve as an indicator of the excess of acidifying air pollutants. The pH value of rainwater in the presence of sulphur dioxide and nitrogen oxides, the precursors of acid rain, falls below pH 5.6, which is the limit value for acid rain. In this research, the tailoring of halochromic textile was examined for the design of a functional textile that can serve as a sensor and inform the wearer about the presence of pollutants in the air by means of an immediate colour change. For this purpose, a polyamide 6 fabric was dyed with the pH-sensitive Bromocresol green dye, which causes a colour change below pH 3.6 (yellow) and above pH 5.4 (blue). In addition, the dyed polyamide 6 fabric was treated with a water and oil repellent finish. Colour and colour change before and after immersion of unfinished and finished dyed samples in buffer solutions with different pH values were evaluated spectrophotometrically using the CIELAB colour space. The colour fastness to rubbing, washing, and light, and the water and oil repellency of the dyed fabrics were determined according to valid SIST EN ISO standards. The results showed that the unfinished dyed polyamide 6 fabric undergoes a reversible colour change faster and more clearly than the finished dyed polyamide 6 fabric. The dyed polyamide 6 fabric had good colour fastness to rubbing and domestic and commercial laundering, while the colour fastness to light was poor. In addition, the dyed polyamide 6 fabric was pH-sensitive, despite dye degradation under xenon light, regardless of whether it was finished.<\/jats:p>","DOI":"10.3390\/polym12102251","type":"journal-article","created":{"date-parts":[[2020,9,30]],"date-time":"2020-09-30T09:41:01Z","timestamp":1601458861000},"page":"2251","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Design of pH Responsive Textile as a Sensor Material for Acid Rain"],"prefix":"10.3390","volume":"12","author":[{"given":"Viktor","family":"Stojkoski","sequence":"first","affiliation":[{"name":"Department of Textiles, Graphic Arts and Design, Faculty of Natural Sciences and Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mateja","family":"Kert","sequence":"additional","affiliation":[{"name":"Department of Textiles, Graphic Arts and Design, Faculty of Natural Sciences and Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"849","DOI":"10.1007\/s13280-019-01244-4","article-title":"Acid rain and air pollution: 50 years of progress in environmental science and policy","volume":"49","author":"Grennfelt","year":"2020","journal-title":"Ambio"},{"key":"ref_2","unstructured":"(2019). Fourth Report for Policy Makers: Towards Clean Air for Sustainable Future in East Asia through Collaborative Activities, Acid Deposition Monitoring Network in East Asia (EANET). Available online: https:\/\/www.eanet.asia."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.gloenvcha.2018.08.008","article-title":"Outlook for clean air in the context of sustainable development goals","volume":"53","author":"Rafaj","year":"2018","journal-title":"Glob. Environ. Change"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1080\/00405000.2016.1177870","article-title":"Overview of wearable electronics and smart textiles","volume":"108","author":"Honarvar","year":"2017","journal-title":"J. Text. Inst."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Dong, X. (2019). An introduction to wearable technology and smart textiles and apparel: Terminology, statistics, evolution, and challenges. Smart and Functional Soft Materials, Intech Open.","DOI":"10.5772\/intechopen.77491"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Vikov\u00e1, M. (2018). Chromic materials: Fundamentals, Measurements, and Applications, Apple Academic Press.","DOI":"10.1201\/9781351171007"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Christie, R.M. (2013). Chromic materials for technical textile applications. Advances in the Dyeing and Finishing of Technical Textiles, Woodhead Publishing.","DOI":"10.1533\/9780857097613.1.3"},{"key":"ref_8","unstructured":"Bamfield, P. (2001). Chromic Phenomena: Technological Applications of Colour Chemistry, Royal Society of Chemistry."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1016\/j.snb.2011.11.077","article-title":"Novel cellulose and polyamide halochromic textile sensors based on the encapsulation of Methyl Red into a sol-gel matrix","volume":"162","author":"Brancatelli","year":"2012","journal-title":"Sens. Actuator B Chem."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"2685","DOI":"10.1039\/C5PY00060B","article-title":"Dye immobilization in halochromic nanofibers through blend electrospinning of a dye-containing copolymer and polyamide-6","volume":"6","author":"Steyaert","year":"2015","journal-title":"Polym. Chem."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1016\/j.dyepig.2015.09.007","article-title":"Halochromic properties of sulfonphthaleine dyes in a textile environment: The influence of substituents","volume":"124","author":"Steyaert","year":"2016","journal-title":"Dye. Pigment."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"47","DOI":"10.4028\/www.scientific.net\/AST.80.47","article-title":"Halochromic textile materials as innovative pH-sensors","volume":"80","author":"Geltmeyer","year":"2012","journal-title":"Adv. Sci. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1111\/j.1478-4408.2011.00361.x","article-title":"Coloration and application of pH-sensitive dyes on textile materials","volume":"128","year":"2012","journal-title":"Coloration Technol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"590","DOI":"10.1177\/0040517509346443","article-title":"The use of pH-indicator dyes for pH-sensitive textile materials","volume":"80","year":"2010","journal-title":"Text. Res. J."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"788","DOI":"10.1016\/j.snb.2014.09.104","article-title":"Tailoring colour changes of optical sensor materials by combining indicator and inert dyes and their use in sensor layers, textiles and non-wovens","volume":"206","author":"Mohr","year":"2015","journal-title":"Sens. Actuator B Chem."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"455","DOI":"10.1016\/j.snb.2017.02.095","article-title":"Smart bandage with wireless connectivity for optical monitoring of pH","volume":"246","author":"Kassal","year":"2017","journal-title":"Sens. Actuator B Chem."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1097","DOI":"10.1016\/j.snb.2011.12.027","article-title":"Development of universal pH sensing electrospun nanofibers","volume":"161","author":"Agarwal","year":"2012","journal-title":"Sens. Actuators B Chem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1108\/09556221111136539","article-title":"Textile materials with a pH-sensitive function","volume":"23","year":"2011","journal-title":"Int. J. Cloth. Sci. Technol."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Pall\u00e1s, I., Marcos, M.D., Mart\u00ednez-M\u00e1\u00f1ez, R., and Ros-Lis, J.V. (2017). Development of a textile nanocomposite as naked eye indicator of the exposition to strong acids. Sensors, 17.","DOI":"10.3390\/s17092134"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Cook, J.G. (2001). Polyamide fibers. Handbook of Textile Fibres, Woodhead Publishing.","DOI":"10.1533\/9781855734852.194"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Vasanthan, N. (2009). 7\u2013Polyamide fiber formation: Structure, properties and characterization. Handbook of Textile Fibre Structure, Woodhead Publishing.","DOI":"10.1533\/9781845696504.2.232"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Kothari, V.K. (2008). Polyester and polyamide fibres\u2013apparel applications. Polyesters and Polyamides, Woodhead Publishing.","DOI":"10.1201\/9781439831861.ch14"},{"key":"ref_23","unstructured":"Textile Exchange (2020, February 20). Preferred Fiber and Materials Market Report [Online]. Available online: https:\/\/store.textileexchange.org\/product\/2019-preferred-fiber-materials-report\/."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"351","DOI":"10.1111\/j.1478-4408.2007.00108.x","article-title":"Synthesis of an amino-terminated hyperbranched polymer and its application in reactive dyeing on cotton as a salt-free dyeing auxiliary","volume":"123","author":"Zhang","year":"2007","journal-title":"Coloration Technol."},{"key":"ref_25","unstructured":"Weather Atlas (2020, March 10). Monthly Weather Forecast and Climate: Ljubljana, Slovenia. Available online: https:\/\/www.weather-atlas.com\/en\/slovenia\/ljubljana-climate."},{"key":"ref_26","unstructured":"Slovenian Environment Agency (2020, February 20). Online Data of Ljubljana Rainfall Obtained from for the Year 2019, Available online: https:\/\/meteo.arso.gov.si\/met\/sl\/app\/webmet\/."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/12\/10\/2251\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:15:09Z","timestamp":1760177709000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/12\/10\/2251"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9,30]]},"references-count":26,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2020,10]]}},"alternative-id":["polym12102251"],"URL":"https:\/\/doi.org\/10.3390\/polym12102251","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,9,30]]}}}