聚乳酸/有机蒙脱土纳米插层复合材料的原位插层聚合工艺及结构表征研究  

Study on In-situ Intercalation Polymerization Techniques and Characterization of PLA/OMMT Intercalation Nanocomposites

作　　者：袁龙飞[1] 马小惠[1] 汪凌[1] 甄卫军[1] 庞桂林[1] 刘月娥[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《硅酸盐通报》2009年第1期102-107,共6页Bulletin of the Chinese Ceramic Society

基　　金：2005年度新疆维吾尔自治区高校科研计划(No.XJEDU2005E01)

摘　　要：采用新疆夏子街钠基蒙脱土为原矿制备的有机蒙脱土和丙交酯,通过原位插层聚合方法,合成聚乳酸/有机蒙脱土纳米复合材料。通过对反应体系真空度、催化剂用量、反应温度、反应时间和OMMT加入量等对工艺条件的研究,确定了最佳合成条件。结果为:反应体系真空度为0.085MPa,催化剂用量为丙交酯质量的0.5%,聚合反应的温度控制在170℃,聚合反应时间7h,OMMT加入量3%(质量含量)。采用傅立叶红外光谱仪、X射线衍射仪、扫描电子显微镜、透射电子显微镜对聚乳酸/有机蒙脱土纳米插层复合材料的微观结构、相态等进行了表征和分析。Poly lactic acid/organomontmorillonite intercalation nanocomposites were synthesised by insitu intercalation polymerization with organomontmorillonite from Xiazijie Sodium-base montmorillonite and lactide. The polymerization techniqued which included polymerization vacuum, catalyst dosage, polymerization temperature, polymerization time and OMMT dosage were studied. It was shown that the optimum parameters were as following： the vacuum was 0. 085 MPa, the catalyst dosage was 0.5% of lactide mass, the polymerization temperature was 170 ℃, the polymerization time was 7 h, OMMT dosage was 3% of lactide. The microstrueture and morphology of PLA/OMMT intercalation nanocomposites were characterized By FT-IR, XRD, SEM,TEM.

关 键 词：丙交酯 原位插层聚合 聚乳酸 有机蒙脱土 纳米复合材料 

分 类 号：TB33[一般工业技术—材料科学与工程]