NDLI: Biodegradable aliphatic/aromatic copolyesters based on terephthalic acid and poly(L-lactic acid): Synthesis, characterization and hydrolytic degradation

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Chinese Journal of Polymer Science : Volume 28, Issue 2, March 2010

Chinese Journal of Polymer Science : Volume 28, Issue 1, January 2010

Biodegradable aliphatic/aromatic copolyesters based on terephthalic acid and poly(L-lactic acid): Synthesis, characterization and hydrolytic degradation

Content Provider	Springer Nature Link
Author	Wang, Bing tao Zhang, Yan Song, Ping an Guo, Zheng hong Cheng, Jie Fang, Zheng ping
Copyright Year	2010
Abstract	Biodegradable aliphatic/aromatic copolyesters, poly(butylene terephthalate-co-lactate) (PBTL) were prepared via direct melt polycondensation of terephthalic acid (TPA), 1,4-butanediol (BDO) and poly(L-lactic acid) oligomer (OLLA). The effects of polymerization time and temperature, as well as aliphatic/aromatic moiety ratio on the physical and thermal properties were investigated. The largest molecular weight of the copolyesters was up to 64100 with molecular weight distribution index of 2.09 when the polycondensation was carried out at 230°C for 6 h. DSC, XRD, DMA and TGA analysis clearly indicated that the degree of crystallinity, glass-transition temperature, melting point, decomposition temperature, tensile strength, elongation and Young’s modulus were influenced by the ratio between TPA and OLLA in the final copolyesters. Hydrolytic degradation results demonstrated that the incorporation of biodegradable lactate moieties into the aromatic polyester could efficiently improve hydrolytic degradability of the copolymer even though it still had many aromatic units in the main chains.
Starting Page	405
Ending Page	415
Page Count	11
File Format	PDF
ISSN	02567679
Journal	Chinese Journal of Polymer Science
Volume Number	28
Issue Number	3
e-ISSN	14396203
Language	English
Publisher	Chinese Chemical Society and Institute of Chemistry, CAS
Publisher Date	2010-04-21
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aliphatic/aromatic copolyesters Direct melt polycondensation Biodegradable Condensed Matter Physics Characterization and Evaluation of Materials Industrial Chemistry/Chemical Engineering Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering Polymers and Plastics

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