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制备聚(L-乳酸-co-乙醇酸)/聚D-乳酸共混物立构复合物的新方法
引用本文:董军,白威,黄冬玲,熊成东. 制备聚(L-乳酸-co-乙醇酸)/聚D-乳酸共混物立构复合物的新方法[J]. 合成化学, 2015, 23(12): 1111-1115. DOI: 10.15952/j.cnki.cjsc.1005-1511.2015.12.1111
作者姓名:董军  白威  黄冬玲  熊成东
作者单位:1. 中国科学院 成都有机化学研究所,四川 成都 610041; 2. 中国科学院大学,北京 100049
摘    要:首次以高分子量的聚(L-乳酸-co-乙醇酸)(PLLGA)和D-聚乳酸(PDLA)[m(PLLGA) : m(PDLA)=3:1, c 50 mL·g-1]为原料,氯仿为溶剂,等体积的甲醇为沉淀剂,于50 ℃蒸发4 h形成了PLLGA和PDLA的立构复合物(sc-PLA),其结构和性能经XRD, DSC和TGA表征。结果表明:sc-PLA的结晶度达96.2%,热失重5%温度为342 ℃(PLLGA为304 ℃)。

关 键 词:聚乳酸-乙醇酸  D-聚乳酸  立构复合物  制备  热稳定性  
收稿时间:2015-02-05

A Novel Method for Preparing Poly(L-lactic acid-co-glycolic acid) and Poly (D-lactic acid) Stereocomplexes
DONG Jun,BAI Wei,HUANG Dong-ling,XIONG Cheng-dong. A Novel Method for Preparing Poly(L-lactic acid-co-glycolic acid) and Poly (D-lactic acid) Stereocomplexes[J]. Chinese Journal of Synthetic Chemistry, 2015, 23(12): 1111-1115. DOI: 10.15952/j.cnki.cjsc.1005-1511.2015.12.1111
Authors:DONG Jun  BAI Wei  HUANG Dong-ling  XIONG Cheng-dong
Affiliation:1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China; 2. University of Chinese Academy of Science, Beijing 100049, China
Abstract:Stereocomplexes(sc-PLA) was prepared by improved solvent method, using high molecular weight poly(L-lactic acid-co-glycolic acid)(PLLGA) and poly(D-lactic acid)(PDLA)[m(PLLGA) : m(PDLA)=3:1, c 50 mL·g-1]as materials, chloroform as solvent and equal volume methanol as precipitator, at 50 ℃ for 4 h. The structure and performances were characterized by XRD, DSC and TGA. The crystallinity and initial decomposition temperature of  sc-PLA were 96.2% and 342 ℃, respectively.
Keywords:poly(L-lactic acid-co-glycolic acid)  poly(D-lactic acid)  stereocomplex  preparation  thermal stability  
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