超临界CO_2夹带乙醚协助三单体固相接枝改性聚丙烯  

Modification of polypropylene by solid-state grafting of ternary-monomer assisted with supercritical carbon dioxide and ether as co-solovent

作　　者：王鉴[1] 徐洋[1] 宁媛媛[1] 赵觅[1] 王文燕 

机构地区：[1]大庆石油学院化学化工学院,黑龙江大庆163318 [2]大庆石化研究中心,黑龙江大庆163714

出　　处：《化学工业与工程技术》2010年第1期1-4,共4页Journal of Chemical Industry & Engineering

基　　金：黑龙江省科技攻关课题;GZ06A402

摘　　要：采用超临界CO2作为溶剂和溶胀剂,乙醚作为共溶剂,通过自由基聚合作用进行三单体BMA/St/MAH固相接枝改性聚丙烯。在43℃,8.2 MPa的超临界CO2流体作用下用三单体及引发剂AIBN溶胀PP,卸压后转移至圆底烧瓶中,在氮气保护下于85℃进行固相接枝,接枝率为2.99%。考察了溶胀时间、溶胀压力、溶胀温度以及共溶剂的用量对接枝率的影响。结果表明,通过改变溶胀压力、溶胀时间以及共溶剂的用量可以控制接枝的效果,共溶剂的加入有利于缩短溶胀时间。Grafting of ternary-monomer（BMA/St/MAH） onto isotactic polypropylene（iPP） is carried out by free radical polymerization using supercritieal carbon dioxide（SC CO2） as solvent and swelling agent,and ether as co-solovent. The iPP is impregnated with ternary-monomer and initiator（AIBN） dissolved in SC CO2 at 43 ℃ and 8.2 MPa. After releasing COz, iPP is transfered to a round flask and is grafted at 85℃ under protection of N2, and the grafted sample with graft percentage 2. 99% is obtained. The grafting level can be controlled by swelling time, swelling pressure and dosage of ether, the influence of which on graft percentage is also discussed, and introducing co-solvent is of advantage to reduce swelling time.

关 键 词：超临界CO2 聚丙烯改性 接枝 共溶剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]