Characterization of novel biodegradable copolyesters prepared from glycolyzed products of poly(ethylene terephthalate)

Poly(ethylene terephthalate), PET reacted with various glycols in the presence of titanium tetraisopropoxide as a catalyst. The glycolyzed PET was fractionated into two parts—soluble and insoluble in CHCl3—characterized and used as a raw material to synthesize copolyesters. The soluble part in the C...

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Bibliographic Details
Published in:Journal of applied polymer science 2002-06, Vol.84 (10), p.1838-1847
Main Authors: Maeda, Yasukatsu, Mori, Hajime, Maeda, Takuya, Itoh, Osamu, Yamaguchi, Kazumi, Kubota, Shizuo, Nakayama, Atsuyoshi, Kawasaki, Norioki, Yamamoto, Noboru, Aiba, Seiich
Format: Article
Language:English
Subjects:
Applied sciences
biodegradable
Biodegradation
Catalysts
Copolymers
Esterification
Exact sciences and technology
Fractionation
Glycols
Hydrolysis
Monomers
Oligomers
Organic polymers
Physicochemistry of polymers
Polycondensation
polyesters
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:Poly(ethylene terephthalate), PET reacted with various glycols in the presence of titanium tetraisopropoxide as a catalyst. The glycolyzed PET was fractionated into two parts—soluble and insoluble in CHCl3—characterized and used as a raw material to synthesize copolyesters. The soluble part in the CHCl3 part was a mixture of monomers and oligomers, and no melting points were observed. On the other hand, in the insoluble part a melting point was determined. The glycolyzed PET and copoly(succinic anhydride/ethylene oxide), PES were condensed to produce copolymers. The synthesized copolyesters were amorphous and hydrolyzed enzymatically due to a decrease in the crystallinity. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 1838–1847, 2002; DOI 10.1002/app.10462
ISSN:0021-8995
1097-4628
DOI:10.1002/app.10462