PVC氯化原位接枝丙烯酸的合成和表征  

Synthesis and Characterization of PVC Graft Acrylic Acid via In-situ Chlorinating Graft Copolymerization

作　　者：王宝星[1] 万耿平[1] 赵季若[1] 冯莺[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《塑料工业》2008年第5期13-15,21,共4页China Plastics Industry

基　　金：国家自然科学基金资助项目(50373042)

摘　　要：研究了以氯气作为引发剂对PVC进行氯化原位接枝丙烯酸(AA)的过程,对分离纯化后的接枝物进行了表征和分析;同时还测定了接枝共聚物中丙烯酸的接枝率,考察了反应温度、反应时间、单体用量对产物接枝率的影响。结果表明,反应过程生成了聚氯乙烯接枝丙烯酸的共聚物(CPVC-g-AA);当反应温度为120℃,AA为10份,反应时间为3h时,丙烯酸的最大接枝率达1.21%。The graft copolymerization of acrylic acid （AA） onto PVC via in-situ chlorinating graft copolymerization was studied, in which Cl was used as initiator. The graft product （CPVC-g-AA） was characterized by FTIR and GPC after separated and purified, and the feasibility of the graft copolymerization was confirmed. The graft degree was measured by non-aqueous titration, furthermore, the effects of reaction temperature, reaction time and monomer content on the graft degree of CPVC-g-AA were studied. The results showed the optimal graft conditions were reaction temperature 120 ℃, reaction time 3h, AA 10 phr, and the maximum graft degree was 1.21%.

关 键 词：聚氯乙烯 接枝率 氯化原位接枝共聚合 接枝共聚物 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]