预辐照聚苯醚反应挤出接枝共聚物的制备  

Preparation of preirradiation polyphenylene oxide graft copolymer by reactive extrusion

作　　者：李文斐[1] 姚占海[2] 郜小萌[3] 谢磊[1] 赵瑞雪[1] 李莉霞[2] 

机构地区：[1]长春理工大学化学与环境工程学院,吉林省长春市130022 [2]中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,吉林省长春市130022 [3]中山大学化学系,广东省广州市510275

出　　处：《合成树脂及塑料》2013年第1期29-33,共5页China Synthetic Resin and Plastics

基　　金：国家科技支撑计划(2012BADB01);吉林省科技发展计划项目(20115005);吉林省与中科院合作项目(2011CJT0013)

摘　　要：采用β射线对聚苯醚(PPO)进行预辐照,以产生的PPO大分子过氧化物作引发剂,利用反应挤出接枝法,将功能单体丙烯酸(AA)和马来酸酐(MAH)分别接枝到PPO分子链上,制备AA接枝PPO(PPO-g-AA)和MAH接枝PPO(PPO-g-MAH)。接枝率为0.22%的PPO-g-AA,接触角为78.42°;接枝率为0.38%的PPO-g-MAH,接触角为64.28°;接枝率越大,接枝共聚物的润湿性就越好。接枝共聚物与PPO的熔融温度均为262℃,接枝率为0.28%的PPO-g-AA与PPO的拉伸强度均为130 MPa,接枝率为0.32%的PPO-g-MAH拉伸强度为128 MPa。在高频区,PP-g-MAH的复数黏度、储能模量以及损耗模量均大于PPO。Maleic anhydride（MAH） grafted polyphenylene oxide（PPO）（PPO-g-MAH） and acrylic acid（AA）grafted PPO（PPO-g-AA） were prepared via reactive extrusion with PPO macromolecular peroxide as an initiatior which prepared by β-ray pre-irradiation method.The contact angles of PPO-g-AA with grafting ratio of 0.22% and PPO-g-MAH with grafting ratio of 0.38% are 78.42°and 64.28°,respectively.The higher the grafting ratio of the graft copolymer is,the better the wettability is.PPO and its graft copolymers have the same melt temperature of 262 ℃.The tensile strength of PPO and PPO-g-AA with grafting ratio of 0.28% were both 130 MPa,the tensile strength of PPO-g-MAH with grafting ratio of 0.32% is 128 MPa.The storage modulus,loss modulus and complex viscosity of PP-g-MAH are higher than those of PPO in high frequency zone.

关 键 词：聚苯醚 丙烯酸 马来酸酐 预辐照 接枝 

分 类 号：TQ326.53[化学工程—合成树脂塑料工业]