聚丙烯粉料固相光接枝丙烯酸的研究  

Study on polypropylene powder grafted with acrylic acid by photo-initiated solid phase technique

作　　者：买买提江.依米提 茹克亚.买买提斯迪克 斯玛伊力.克热木 司马义.努尔拉 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《辐射研究与辐射工艺学报》2010年第3期144-149,共6页Journal of Radiation Research and Radiation Processing

基　　金：乌鲁木齐市科技局种子基金(K08141003)资助

摘　　要：为了提高聚丙烯(PP)的亲水性和染色性,以二苯甲酮(BP)为光引发剂、使用固相光接枝反应装置,采用固相紫外光接枝法在PP粒料表面接枝丙烯酸(AA)单体,并研究了单体含量、引发剂用量、辐照时间和溶胀时间对接枝率的影响规律,以及PP接枝前后力学性能的变化。结果表明,AA用量为1mL、引发剂用量为0.15g、辐照时间为30min、溶胀时间为12h时的接枝率最高。接枝率为5.2%左右,上染率为43.4%时,接枝PP的拉伸强度降了1.37MPa,但断裂伸长率从358.3%增加到396.3%,说明丙烯酸适度接枝对力学性能影响不大。In order to increase the hydrophility of polypropylene （PP）, acrylic acid（AA） was grafted on to the surface of PP powder by means of photo-initiated solid phase grafting reaction with the photo-sensitizer of benzo- phenone in the reaction equipment of UV polymerization. The effects of AA content, amount of initiator, irradiation time, and swelling time on grafting degree were systematically studied. The result shows that in the processing of AA grafting reaction the highest value, 5.2%, of grafting degree can be obtained when the content of AA is 1 mL, amount of initiator is 0.15 g, irradiation time is 30 min and swelling time is 12 h. With the grafted sample the dye ability is 43.4%, tensile strength drops 1.37 MPa of the grafted PP, but breaking extension degree increases to 396.3% from 358.3%. This indicates that the effect of moderate grafting of acrylic acid on the mechanical performance of PP is not obvious.

关 键 词：聚丙烯 丙烯酸 力学性能 表面光接枝 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ323.41