酯交换催化剂对PC/PET合金相容性和结晶行为的影响  

Effect of Transesterification Catalysts on the Miscibility and Crystallization Behavior of PC/PET Blend

作　　者：贾鹏飞[1] 王庭慰[1] 江国栋[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《现代塑料加工应用》2014年第3期16-19,共4页Modern Plastics Processing and Applications

基　　金：江苏高校优势学科建设工程基金资助

摘　　要：分别采用醋酸镧[La(Ac)3]、醋酸铈[Ce(Ac)3]和钛酸四丁酯[Ti(OBu)4]作为聚碳酸酯/聚对苯二甲酸乙二醇酯(PC/PET)反应性共混的酯交换催化剂,通过溶解度试验、傅里叶红外光谱(FTIR)和差示扫描量热法(DSC),研究了共混物酯交换程度、相容性和结晶行为。结果表明:酯交换催化剂的加入提高了PC/PET共混物中酯交换反应程度;大多数情况下,酯交换催化剂的加入会降低甚至消除共混物的结晶能力,但低酯交换催化剂用量的La(Ac)3从某种程度上提高了共混物的结晶能力;Ce(Ac)3是最高效的酯交换催化剂。La（Ac）3, Ce（Ac）3 and Ti（OBu）4 were used as transesterification catalysts in the reactive blending of PC/PET. The reaction extent, miscibility and crystallization behavior were investigated by solubility test, FTIR and DSC. The results show that the transesterification reaction extent in PC/PET blends is improved by calalyst. In most cases, the crystallization ability of the blends is reduced or even eliminated by adding the catalysts, but it is improved by the low additive amount of La（Ac）3. Ce（Ac）3 is the most efficient catalyst.

关 键 词：聚碳酸酯 聚对苯二甲酸乙二醇酯 反应性共混 酯交换催化剂 相容性 结晶行为 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]