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合成橡胶工业 |
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合成橡胶工业 |
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以西弗碱为封端剂原位合成官能化苯乙烯-丁二烯-苯乙烯嵌段共聚物 廖明义 郑仰才 金美花 摘 要：合成了西弗碱(N,N一二甲氨基苯甲醛缩苯胺,DMABA),用负离子原位聚合法合成了末端官能化苯乙烯-丁二烯-笨乙烯嵌段共聚物(SBS),用模型聚合物的方法研究了DMABA与聚苯乙烯(PS)活性种的定量反应关系,以及反应温度、PS数均相对分子质量(M.)对官能度的影响,并对官能化聚合物进行了分析表征.结果表明,DMABA能和Ps活性种等摩尔进行反应,反应温度以及PS活性种的M.对聚合物的官能度影响不大;以DMABA为封端剂,n-BuLi或六亚甲基亚胺锂为引发剂,可以制得高官能度的w-SBS或a,w-双端官能化SBS,在提高SBS极性的同时,对SBS的相对分子质量分布及微观结构影响不大. Synthesis of functionalized styrene-butadiene-styrene block copolymer by in-situ polymerization with Schiff base as end-capping agent Liao Mingyi Zheng Yangcai Jin Meihua |
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收稿日期：2006年12月28日 修稿日期：2007年12月7日 出版日期：2008年3月15日 |
