Synthesis and characterization of functional L-lactic acid/citric acid oligomer

被引：27

作者：

Yao, FL ^{[1
]}

Bai, Y

Chen, W

An, XY

Yao, KD

Sun, PC

Lin, H

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Dept Organ Synth & Polymer Chem Engn, Tianjin 30072, Peoples R China

[2] Tianjin Univ, Inst Polymer Mat, Tianjin 30072, Peoples R China

[3] Naikai Univ, State Key Lab Funct Polymer Mat Adsorpt & Separat, Tianjin 300073, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2004年 / 40卷 / 08期

基金：

美国国家科学基金会;

关键词：

poly(L-lactic acid); citric acid; copolymer; surface properties;

D O I：

10.1016/j.eurpolymj.2004.04.017

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Oligomers of L-lactic acid and citric acid (PLCA) were synthesized by reacting lactic acid with citric acid in the presence of stannous chloride. The chemical compositions of these multicarboxylated oligomers were verified by FT-IR and H-1-NMR spectroscopy. The thermal characteristics of the oligomers, such as glass transition temperature T-g, melting temperature T-m and melting enthalpy, were confirmed by DSC. The crystallinity of the oligomers were determined by DSC and WXRD. Meanwhile, the acid-base surface characteristics of PLCA have been determined by contact angle. The results implicated that these oligomers may be used to entrap the cospecies on PLLA surface in tissue engineering. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1895 / 1901

页数：7

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