聚丙烯酸甲酯齐聚物的合成及乙氧基化  

Synthesis and Ethoxylation of Poly Methyl Acrylate

作　　者：杜鹏飞[1] 孙永强[1] 康保安[1] 田春花[1] 刘广宇[1] 史修启[1] 张勇[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001

出　　处：《高分子材料科学与工程》2011年第5期25-28,共4页Polymer Materials Science & Engineering

基　　金："十一五"国家科技支撑计划项目(2007BAE52B00)

摘　　要：以四氢呋喃为溶剂,正十二硫醇为链转移剂,采用自由基溶液聚合的方法合成了聚丙烯酸甲酯齐聚物。考察了单体滴加时间对黏均分子量的影响,确定滴加时间为40 min可以得到较低黏均分子量的聚丙烯酸甲酯齐聚物。在自制的插入式酯基乙氧基化催化剂MCT-09催化下成功地对聚丙烯酸甲酯齐聚物进行了乙氧基化反应。反应结果显示,随着反应进行,催化剂活性下降,乙氧基化反应速度逐渐降低。采用红外光谱对聚丙烯酸甲酯齐聚物及其乙氧基化物进行了结构表征。Poly methyl acrylate（PMA） was synthesized by the method of free radical solvent polymerization using the tetrahydrofuran as solvent and the n-dodecyl mercaptan as chain transfer agent.The effect of the monomer dropping time on the viscosity molecular weight was tested.The results show that poly methyl acrylate with low viscosity molecular weight can be obtained when the monomer dropping time is set to be 40 minutes approximately.Following,with the help of self-made inserting ester ethoxylation catalyst MCT-09 the poly methyl acrylate is carried out the ethoxylation successfully.The reaction results demonstrate that with the reaction carried through,the reaction rate decreases gradually due to the catalyst activity decline.Finally,the structure of the PMA and PMA ethoxylate was characterized by infrared spectrum（IR）.

关 键 词：聚丙烯酸甲酯齐聚物 乙氧基化 酯基乙氧基化催化剂 

分 类 号：O632.52[理学—高分子化学]