We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Study on the preparation and properties of lactic acid based copolymer.
- Authors
Xu, Hong; Teng, Cuiqing; Mao, Zhiping; Yu, Muhuo
- Abstract
A new process to prepare L-lactic acid based polymer with high molecular-weight was established. In this process, the carboxyl terminated poly (L-lactic acid) (PLLA) prepolymer was first synthesized via polycondensation of L-lactic acid and a little adipic acid, and then the molecular weight of PLLA was increased by a chain-extending reaction using bisphenol-A epoxy resin as a chain extender. In situ FTIR was used to characterize the activity of reaction between epoxy groups at the end of bisphenol-A epoxy resin and carboxyl groups at the end of PLLA prepolymer, and the results showed that the reaction was of high activity. The weight-average molecular weight of prepared L-lactic acid based copolymer (PLLA-co-BisA ER) was up to 210,000 at an optimum synthetic condition. The thermal property and crystallization behavior of prepared copolymer were also studied.
- Subjects
POLYLACTIC acid; COPOLYMERS; MOLECULAR weights; POLYCONDENSATION; ADIPIC acid; THERMAL properties of polymers; CRYSTALLIZATION; BISPHENOL A
- Publication
Journal of Polymer Research, 2012, Vol 19, Issue 9, p1
- ISSN
1022-9760
- Publication type
Article
- DOI
10.1007/s10965-012-9960-z