聚苯乙烯-偏二氯乙烯大分子引发剂的合成及表征  

Synthesis and Characterization of Poly(Styrene-co-Vinylidene Chloride) Macroinitiator

作　　者：王晓东[1] 李树新[2] 郭文莉[2] 龚惠勤[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京石油化工学院,北京102617

出　　处：《石油化工高等学校学报》2006年第2期17-19,22,共4页Journal of Petrochemical Universities

基　　金：中国石油化工股份有限公司课题(404038)。

摘　　要：利用自由基溶液聚合技术,以过氧化苯甲酰(BPO)为引发剂,合成了大分子引发剂:苯乙烯-偏二氯乙烯(St-VDC)共聚物。探讨了引发剂质量和聚合时间对聚合物的相对分子质量、相对分子质量分布以及聚合产物产率的影响,得出了合成大分子引发剂适宜的反应条件:BPO质量为0.883 2 g,V(St)/V(VDC)=3∶7,反应时间30h,反应温度343 K。根据GPC测试、红外谱图以及核磁共振(1H-NMR)谱图对产物进行了分析,分析显示存在苯环、碳氯峰,并且根据吸收峰面积间的关系计算出了VDC在聚合物中的摩尔分数为66.23%。The macroinitiator （St VDC copolymer） was synthesized with BPO as initiator by free radical solution polymerization technology. The effects of the mass of initiator and reaction time on relative molecular weight and its distribution and product rate were studied. The preferable polymerization conditions of synthesizing St- VDC copolymer were obtained, h is that mass of BPO is 0. 883 2 g, V（St）/V（VDC） is equal to 3：7, reaction time is 30 h and reaction temperature is 343 K. The product was characterized by GPC, infra red spectrum（IR） detectors and ^1H - NMR spectroscopy. The result indicates that benzene ring peak and C--Cl peak exist and the mole fraction of VDC is 66.23 % in copolymer which is calculated according to relationship of absorbed peak areas.

关 键 词：苯乙烯 偏二氯乙烯 自由基溶液聚合 

分 类 号：O641.4[理学—物理化学]