STUDIES ON THE DEGRADATION OF POLY(L-LACTIDE-r-TRIMETHENE CARBONATE) COPOLYMERS

Yuan-lin Li; Sai Li; Li-jie Ji; Bin He; Zhong-wei Gu

doi:10.1007/s10118-013-1299-3

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STUDIES ON THE DEGRADATION OF POLY(L-LACTIDE-r-TRIMETHENE CARBONATE) COPOLYMERS

PAPER | Updated：2023-01-03

- STUDIES ON THE DEGRADATION OF POLY(L-LACTIDE-r-TRIMETHENE CARBONATE) COPOLYMERS
- Chinese Journal of Polymer Science Vol. 31, Issue 7, Pages: 966-973(2013)
- Affiliations：
  
  School of Chemical Engineering, Sichuan University, Chengdu 610065, China
  National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
- Author bio：
  
  **Zhong-wei Gu (顾忠伟), E-mail: zwgu@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-013-1299-3
  CLC：
- Received：26 November 2012，
  
  Revised：2012-12-19，
  
  Accepted：24 December 2012，
  
  Published：2013-07
- Accepted：
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Yuan-lin Li, Sai Li, Li-jie Ji, et al. STUDIES ON THE DEGRADATION OF POLY(L-LACTIDE-r-TRIMETHENE CARBONATE) COPOLYMERS[J]. Chinese Journal of Polymer Science, 2013, 31(7): 966-973.
DOI：

Yuan-lin Li, Sai Li, Li-jie Ji, et al. STUDIES ON THE DEGRADATION OF POLY(L-LACTIDE-r-TRIMETHENE CARBONATE) COPOLYMERS[J]. Chinese Journal of Polymer Science, 2013, 31(7): 966-973. DOI： 10.1007/s10118-013-1299-3.

摘要

Abstract

Biodegradable poly(L-lactide-r-trimethene carbonate) copolymers (P(LLA-

-TMC)) with different compositions were synthesized. The degradation of the copolymers was carried out in phosphate buffer saline solutions (pH = 7.4) at 37℃. The compositions

structure and properties of the copolymers in degradation were characterized with

H-NMR

DSC

XRD

GPC

and SEM. The weight loss of the P(LLA-

-TMC) 50/50 was much faster than that of P(LLA-

-TMC) 85/15 and PLLA homopolymer. Interestingly

though the molecular weight of the compolymers decreased greatly during degradation

the compositions were rarely varied. After long time degradation

the PLLA segments were induced to crystallize in the P(LLA-

-TMC) 85/15 copolymer. The SEM observation of the surface and cross-section of P(LLA-

-TMC) 85/15 copolymer films found it was similar to the bulk degradation of PLLA homopolymer.

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