Fibers and Polymers

, Volume 18, Issue 4, pp 641–648 | Cite as

A bio-antifelting agent based on waterborne polyurethane and keratin polypeptides extracted by protease from waste wool



A bio-composite made from keratin polypeptides and waterborne polyurethane was firstly employed as a bioantifelting agent for wool fabric. The keratin polypeptides, extracted from the waste wool fibers with the protease Esperase8.0L, possessed 5271 weight-average molecular weight. The bio-composites containing different contents of keratin polypeptides were applied for wool anti-felting treatment by a pad-dry-cure process. The results indicated that with increasing content of keratin polypeptides from 0 to 6 wt.%, the area-shrinking rate of the treated wool fabrics was decreased from 4.55 % to 0.47 %, respectively. The warp and weft tensile strength at break of the fabric was increased by 8 % and 12 %, respectively and reduced by about 55 % consumption of waterborne polyurethane. The film of bio-composites had more excellent thermal stability, higher mechanical property in elasticity, and better cytocompatibility compared with the pure waterborne polyurethane film.


Bio-composite Polyurethane Keratin polypeptides Anti-felting Elasticity 


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Copyright information

© The Korean Fiber Society and Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  1. 1.College of Chemistry, Chemical Engineering and BiotechnologyDonghua UniversityShanghaiPR China
  2. 2.National Engineering Research Center for Dyeing and Finishing of TextilesDonghua UniversityShanghaiPR China
  3. 3.National Cashmere Products Engineering & Technical Research CenterErdos Cashmere GroupOrdos, Inner MongoliaPR China

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