双单体AA/St熔融接枝OBC的研究  

Study on OBC-g-(AA-co-St) Prepared by Dual Monomers Melt Grafting Copolymerization

作　　者：曾丽[1] 张华集[1] 张雯[1] 陈晓[1] 

机构地区：[1]福建师范大学材料科学与工程学院福建省高分子材料重点实验室,福建福州350007

出　　处：《塑料科技》2012年第10期51-54,共4页Plastics Science and Technology

基　　金：福建省科技厅项目(2012H6005)

摘　　要：利用HAAKE转矩流变仪,采用熔融接枝法制备了双单体丙烯酸/苯乙烯接枝乙烯-辛烯嵌段共聚物(OBC-g-(AA-co-St)),探讨了丙烯酸(AA)、苯乙烯(St)和过氧化二异丙苯(DCP)的用量对接枝反应的影响,并通过红外光谱分析表征了该接枝产物的结构。结果表明:采用熔融接枝技术,成功地将AA接枝到OBC上,得到了OBC-g-AA接枝共聚物;当AA为4%、DCP为0.2%、反应温度为170℃、反应时间为12 min时,OBC-g-AA的相对接枝率达到峰值;另外,第二单体St的引入使接枝率有所提高,当St与AA质量比为1:2时,其相对接枝率达到1.68。Acrylic acid （AA） and styrene （St） were employed as monomers to modify ethylene-octene blockcopolymer （OBC） by dual monomers melt grafting copolymerization on a HAAKE torque rheometer. The influences of concentrations of monomer AA, comonomer St and initiator DCP on the grafting reaction were studied. The structures of the copolymers were also characterized by means of FTIR. The results show that AA grafts onto the OBC backbone successfully by melt grafting technology, and then the OBC-g-AA copolymer is obtained. The highest grafting ratio value is obtained under the conditions of 4% AA, 0.2% DCP and temperature of 170℃. The presence of comonomer St leads to the increase of grafting ratio in some extent, and the relative grafting ratio reaches to 1.68 when the mass ratio of St and AA is 1：2.

关 键 词：乙烯-辛烯嵌段共聚物 丙烯酸 苯乙烯 熔融接枝 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]