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Abstract

Hydrophobins are native proteins with outstanding properties. Because of their special bifunctional molecular structure they can influence the wetting behavior of polymeric substrates. Here, the influence of thermally deposited hydrophobins on properties of various textile substrates is studied. The successful immobilization of hydrophobins can be demonstrated by a protein-selective color reaction with ninhydrin, which is positive even after a harsh washing and extraction procedure indicating the high permanence of the finishing process. Regarding the wetting properties, the modification of hydrophobic fabrics (demonstrated on polyethylene terephthalate) results in a significant hydrophilization, while hydrophilic textile substrates made of cotton and polyamide attain strong hydrophobic character. Moreover, the developed thermal deposition technique seems to be practical for use with coating technologies established in the textile industry and could be easily transferred to industrial praxis. Thus, non-toxic and biodegradable hydrophobins copied from nature could have great potential in textile surface modification.

Keywords

cotton hydrophobin polyamide polyester surface textile

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Surface modification of textile materials with hydrophobins

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