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对四氢呋喃(THF)活性聚合的研究已有不少报导.近来,活泼有机卤化物与银盐组成的引发体系引起人们的重视,这不仅因为活泼卤化物易于制备;而且如以含有活泼卤原子的高聚物与银盐为引发体系可直接制得嵌段或接枝共聚物.对这类大分子链引发体系的特性常可通过以小分子有机卤化物作为模型进行研究. 我们对溴丙烯-高氯酸银引发体系进行了研究.1977年Lee等人曾用这一类引发体系使THF聚合,达到了平衡收率而认为在室温即可成活性聚合.为验证这一结论是否
There have been many reports on the living polymerization of tetrahydrofuran (THF). Recently, the initiating system consisting of active organic halides and silver salts has drawn much attention, not only because the active halides are easy to prepare, but also such as those containing active halogen atoms Polymers and silver salts as the initiator system can be directly prepared block or graft copolymer.The characteristics of such macromolecular chain initiation system can often be studied by using small molecule organic halides as a model.We have carried out the research on bromopropene- A study of silver perchlorate initiation systems was conducted in 1977. Lee et al. Used this type of initiator system to polymerize the THF to equilibrium yield in 1977 and considered to be viable at room temperature. To verify this conclusion