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| A Novel Method for Preparing Poly(L-lactic acid-co-glycolic acid) and Poly(D-lactic acid) Stereocomplexes |
| DONG Jun1,2, BAI Wei1, HUANG Dong-ling1, XIONG Cheng-dong1 |
| 1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China; 2. University of Chinese Academy of Science, Beijing 100049, China |
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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．
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Received: 05 February 2015
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2015, Vol. 23 
