title: Increase of the hydrophilicity of polyethylene terephthalate fibres by hydrolases from Thermomonospora fusca and Fusarium solani f. sp. pisi.
abstract: Treatment of polyethylene terephthalate fibres with hydrolase preparations from Thermomonospora (Thermobifida) fusca and Fusarium solani f. sp. pisi resulted in an increase of the hydrophilicity of the fibres determined by measurement of their dyeing behaviour with reactive dyes and their water absorption ability. Reflectance spectrometry of treated fibres dyed with a reactive dye showed that the colour became more intense corresponding to an increase of hydroxyl groups on the fibre surfaces and indicated a stepwise peeling of the fibres by the enzymes comparable to the effects obtained by alkaline treatments. The synthetic fibres treated with the hydrolase from T. fusca also showed enhanced water absorption ability further confirming the increased surface hydrophilicity caused by the enzyme.
authors.affiliation: Department of Microbiology and Bioprocess Technology, Institute of Biochemistry, University of Leipzig, 04103 Leipzig, Germany.
authors.forename: Mandy
authors.initials: M
authors.lastname: Alisch-Mark
authors.forename: Anne
authors.initials: A
authors.lastname: Herrmann
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Zimmermann
mesh_terms: D000042:Absorption; D001709:Biotechnology / Q000379:methods*; D002265:Carboxylic Ester Hydrolases / Q000737:chemistry; D002384:Catalysis; D004396:Coloring Agents / Q000494:pharmacology; D005260:Female; D005670:Fusarium / Q000201:enzymology*; D006094:Gram-Positive Bacteria / Q000201:enzymology*; D006801:Humans; D006867:Hydrolases / Q000737:chemistry*; D011093:Polyethylene Terephthalates / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D013053:Spectrophotometry; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D011093:Polyethylene Terephthalates; D011108:Polymers; D014867:Water; D006867:Hydrolases; D002265:Carboxylic Ester Hydrolases; C019952:cutinase