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Enzymatic hydrolysis of PTT polymers and oligomers

Paper ID Volume ID Publish Year Pages File Format Full-Text
24870 43542 2008 7 PDF Available
Title
Enzymatic hydrolysis of PTT polymers and oligomers
Abstract

Oligomers and polymers (film, fabrics) of the linear aromatic polyester poly(trimethylene terephthalate) (PTT) were treated with polyesterases from Thermomyces lanuginosus, Penicillium citrinum, Thermobifida fusca and Fusarium solani pisi. The cutinase from T. fusca was found to release the highest amounts of hydrolysis products from PTT materials and was able to open and hydrolyse a cyclic PTT dimer according to RP-HPLC–UV detection. In contrast, the lipase from T. lanuginosus also showed activity on the PTT fibres and on bis(3-hydroxypropyl) terephthalate (BHPT) but was not able to hydrolyse the polymer film, mono(3-hydroxypropyl) terephthalate (MHPT) nor the cyclic dimer of PTT. As control enzymes inhibited with mercury chloride were used. Surface hydrophilicity changes were investigated with contact angle measurements and the degree of crystallinity changes were determined with DSC.

Keywords
Poly(trimethylene terephthalate); Polyester; Polyesterase; Cutinase
First Page Preview
Enzymatic hydrolysis of PTT polymers and oligomers
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 135, Issue 1, 20 May 2008, Pages 45–51
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering