Cited by 96Surface Modification and SuperhydrophobicityPer- and polyfluoroalkyl substances researchDyeing and Modifying Textile Fibers

Highly fluorinated chemicals in functional textiles can be replaced by re-evaluating liquid repellency and end-user requirements

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Schellenberger, Steffen, Hill, Philippa J., Levenstam, Oscar, Gillgard, Philip, Cousins, Ian T., Taylor, Mark, Blackburn, Richard S.·2019·Journal of Cleaner Production

Abstract

Ongoing regulation of, and concerns regarding, per- and polyfluoroalkyl substances (also popularly known as “highly fluorinated chemicals”), has driven the textile market to search for sustainable alternative chemistries that can provide similar liquid repellency to per- and polyfluoroalkyl substances in performance textiles. This paper aims to inform the potential substitution of fluorochemicals with more environmentally friendly durable water repellents, taking a case-by-case approach and evaluating protection needs for consumer outdoor clothing and medical protective clothing separately. Recently developed non-fluorinated durable water repellents, some based on green chemistry principles, were evaluated in an in-depth assessment for their functionality against fluorinated short-chain alternatives (with hydro-and oleophobic moieties of carbon chain length of six or less). Repellency towards water and non-polar liquids was evaluated with established standard test methods and by measuring the roll-off angle of liquid droplets with a novel sample holder setup. This improved method allowed an enhanced mechanistic understanding of the droplets’ roll-off processes on woven textiles. The best non-fluorinated alternatives demonstrated high water repellency equal to fluorinated side-chain polymers with 'short' fluorinated carbon chains ≤6 carbons, and should be considered as suitable substitutes for consumer outdoor clothing. These results are supported by a survey of end-use requirements indicating water repellency and durability were the most important purchasing criteria. For polar liquids, with lower surface tensions, the repellency provided by non-fluorinated alternatives was clearly reduced, although they had a moderate repellency towards liquids with intermediate polarity (e.g. red wine or synthetic blood). Only fluorinated side-chain polymers with 'short' fluorinated carbon chains ≤6 carbons were seen to provide sufficient protection to polar liquids with very low surface tension (olive oil or gastric fluid). Since occupational protective clothing (e.g. medical clothing) often must provide protection against liquid of a wider range of polarities (e.g. in the case of medical clothing, to bodily fluids and protect the wearer from the transmission of diseases), current non-fluorinated DWRs do not provide sufficient liquid repellency. This implies that innovations in textile technology are still needed to substitute PFASs in some types of occupational protective clothing and other end uses where oil and stain repellency is essential.

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Crossref · 10.1016/j.jclepro.2019.01.160

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Authors
Schellenberger, S., Hill, P. J., Levenstam, O., Gillgard, P., Cousins, I. T., Taylor, M., & Blackburn, R. S.
Affiliations
  • Stockholm University (SE)
  • University of Leeds (GB)
  • University of Borås (SE)
Corresponding author
  • Cousins, Ian T.
  • Blackburn, Richard S.
Venue
Journal of Cleaner Production
Publisher
Elsevier BV
Published
2019-04
Volume
217
Pages
134-143
ISSN
0959-6526 (ISSN-L)
OpenAlex
W2914029581
Cited by
96
References
49
Citations by year
2026: 16 · 2025: 15 · 2024: 15 · 2023: 11 · 2022: 12 · 2021: 12 · 2020: 11 · 2019: 4
FWCI
3.07
Type
journal article
Language
en
Open access
Locations
  • Journal of Cleaner Production (publishedVersion, cc-by-nc-nd)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
  • Diva portal (Dalarna University Library) (submittedVersion, other-oa)
Funders
  • Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (2012-2148)
  • Stockholm County Council and Stockholm University
  • University of Leeds
  • University Research Scholarship
Topics
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Engineering › Building and Construction › Dyeing and Modifying Textile Fibers
Keywords
per- and polyfluoroalkyl substances, PFAS alternatives, liquid repellency, sliding angle, outdoor clothing, medical protective clothing, green chemistry, end-user needs

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