静电纺PLLA/PDLA超细纤维的制备与性能分析  

Electrospinning PLLA/PDLA Superfine Fibers and Property Analysis

作　　者：王亚慧[1] 崔莉[1] WANG Ya-hui;CUI Li(Hubei Biomass Fibers and Eco-dyeing ＆ Finishing Key Laboratory,Wuhan Textile University,Wuhan Hubei 430073,China)

机构地区：[1]武汉纺织大学生物质纤维及生态染整湖北省重点实验室,湖北武汉430073

出　　处：《武汉纺织大学学报》2018年第3期26-30,共5页Journal of Wuhan Textile University

基　　金：国家自然科学基金资助项目(51403160);生物质纤维与生态染整湖北省重点实验室开放课题(STRZ2017009)

摘　　要：将一系列等比例的聚左旋乳酸(PLLA)/聚右旋乳酸(PDLA)通过溶液共混溶解在二氯甲烷中配制成不同浓度共混试样,然后在不同电场电压和喷射距离下静电纺丝制备超细纤维,并在纺丝过程中记录纺丝现象,最后采用差示扫描量热法(DSC)和扫描电镜(SEM)对收集到超细聚乳酸纤维进行热性能和表观形貌分析。结果表明:在电压为12kv,PLLA/PDLA共混溶液的浓度为7%,喷射距离为100mm时,能收集到高含量的立构复合型聚乳酸(sc-PLA)超细纤维。A series of equimolar blends of poly-L-lactic acid（PLLA） and poly-D-lactic acid（PDLA） dissolved in dichloromethane were prepared into different concentration solutions by solution mixing. Then these solution blends were spun into superfine fibers under different electric field voltage and injection distance through electrospinning, and the spinning phenomena were recorded during the process of spinning. Finally the thermal properties and morphology of superfine fibers were investigate by means of differential scanning calorimeter（DSC） and scanning electron microscopy（SEM）. The result showed that highly purified stereocomplex PLA（sc-PLA） superfine fibers could be obtained when the electric voltage was 12 kv, the concentration of PLLA/PDLA solution blend was 7%, and injection distance was 100 mm.

关 键 词：溶液共混 静电纺丝 立构复合型聚乳酸 超细纤维 

分 类 号：TS102.5[轻工技术与工程—纺织工程]