聚乳酸/纳米ZnO柱撑皂石复合材料原位插层聚合及其动力学研究  

In-situ Intercalation Polymerization,Characterization and Kinetics of Poly(Lactic Acid)/Zinc Oxide Pillared Saponite Nanocomposites

作　　者：李进 

机构地区：[1]新疆天业(集团)有限公司,新疆石河子832000

出　　处：《安徽化工》2016年第1期44-47,共4页Anhui Chemical Industry

摘　　要：以乳酸单体为原料，在ZnO柱撑皂石的催化下，直接缩聚合成了聚乳酸，并对其聚合反应动力学进行了研究。正交实验得到聚合最优方案为：反应体系中ZnO柱撑皂石加量为1％（wt），在180℃下反应7h。红外谱图表明所得聚合物为聚乳酸。动力学分析表明，在130℃、使用ZnO柱撑皂石催化剂、0．085MPa条件下，反应程度在2．35％～47．69％范围内，乳酸单体原位插层聚合反应符合三级反应。PLA/ZnO pillared saponite nanocomposite was prepared with the catalysis of ZnO pillared saponite using orthoganal experiments method. The optimum parameters were as follow： the addition content of ZnO pillared saponite was 1% （wt） and the reaction was running at 180℃ for 7h. IR result showed that the polymerization product was PLA; the polymerization kinetic model of PLA/ZnO pillared saponite nanocomposite was studied. The results showed that the polymerization kinetic model accorded with 3rd order under the polymerization reaction conditions at 0.085MPa vacuum degrees, 130℃, 2.35% ～ 47.69% reaction proceeds, ZnO pillared saponite catalyst.

关 键 词：聚乳酸 柱撑 聚合动力学 

分 类 号：TQ321[化学工程—合成树脂塑料工业]