Enolate anionic initiator, sodium deoxybenzoin, for leading living natures by formation of aggregators at the growth chain ends
作者:Joonkeun Min、Hee-Soo Yoo、Priyank N. Shah、Chang-Geun Chae、Jae-Suk Lee
DOI:10.1002/pola.26550
日期:2013.4.15
The living anionic polymerization of n‐hexyl isocyanate (HIC) using a newly developed initiator forming metal–enolate complex, sodium deoxybenzoin (Na‐DB), is reported. For the polymerization of HIC, Na‐DB serves the dual functions of providing controlled fast initiation and efficiently protecting the living chain ends. The use of Na‐DB has resulted in quantitative polymer yields (∼100%), effective
据报道,使用新开发的引发剂形成的金属-烯醇配合物脱氧安息香酸钠(Na-DB),可以实现异氰酸正己酯(HIC)的活性阴离子聚合。对于HIC的聚合,Na-DB具有双重功能:提供受控的快速引发并有效保护活性链末端。Na-DB的使用导致定量的聚合物收率(〜100%),有效控制聚合物的分子量和低多分散指数。为了检查聚异氰酸正己酯(PHIC)的活性,进行了HIC与另一种异氰酸酯单体3-异三(三乙氧基甲硅烷基)丙基异氰酸酯(TESPI)的嵌段共聚。得到的嵌段共聚物,聚(正-己基异氰酸酯) - b聚(3-(三乙氧基甲硅烷基)丙基异氰酸酯)(PHIC- b- PTESPI)通过使用Na-DB的活性阴离子聚合以定量收率和可控制的分子量成功合成。©2013 Wiley Periodicals,Inc. J Polym Sci A部分:Polym Chem,2013年