聚乙二醇改性聚乳酸吸湿性能研究  

Preparation and characterization of PLA/PEG copolymer

作　　者：徐霞[1] 

机构地区：[1]西安工程大学纺织与材料学院,陕西西安710048

出　　处：《纺织科技进展》2007年第6期18-19,36,共3页Progress in Textile Science & Technology

基　　金：陕西省自然科学基金项目(2007B18);陕西省教育厅工业自然科学专项基金项目(07JK247)

摘　　要：以美国聚乳酸、自制聚乳酸和聚乙二醇为原料,分别熔融共聚得到聚乳酸-聚乙二醇共聚物(PLEG)。以L-乳酸与聚乙二醇为原料,熔融共聚后再固相聚合得到PLEG。用凝胶渗透色谱(GPC)、红外光谱(FTIR),熔点测试、吸湿率测试等手段对其进行表征,发现相同条件下,L-乳酸与聚乙二醇熔融共聚后再固相聚合得到的PLEG吸湿率最高。Starting from America polylactic acid or polylaetic acid made by ourself and polyethylene glycol, poly-（ lactic acid ）-polyethylene glycol （PLEG） were synthesized via melt polycondensation. Using lactic acid and polyethylene glycol, PLEG was synthesized, via melt polycondensation and solid state polycondensation. The relative molecular weight, structure and properties of the PLEG were systematically characterized and compared by GPC, FTIR,melting point test and moisture absorption test. The results showed that under the same synthetic conditions, moisture absorption of PLEG synthesized by lactic acid was the highest.

关 键 词：聚乳酸 聚乳酸-聚乙二醇 熔融共聚 固相聚舍 

分 类 号：O631.3[理学—高分子化学]