Controlled ring‐opening polymerization of ε‐caprolactone using polymer‐supported scandium catalyst
Controlled ring‐opening polymerization of ε‐caprolactone using polymer‐supported scandium catalyst
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使用聚合物负载钪催化剂进行ε-己内酯的可控开环聚合
DOI：
10.1002/pola.22540
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
T. Hirabayashi
中科院分区：
文献类型：
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作者：
A. Takasu;M. Oshimura;T. Hirabayashi
讨论了ε-己内酯在聚合物载体催化剂上的可控开环聚合反应。比较了Sc(OTf)3与Sc(OTf)3催化的催化剂的相对分子质量、多分散性、聚合速率和活化能，并用乙酸乙酯溶解催化剂进行了定量回收，并进行了连续过滤和EPMA测试。结果表明，随着转化率的增加，聚合物的相对分子质量增加，但分子量分布没有变宽。结果还表明，PS-SC催化了ε-己内酯和Sc(OTf)3的活性聚合。
The controlled Ring Opening Polymerization (ROP) of ε-caprolactone using a polymer supported catalyst under mild conditions using polymer-supported scandium catalyst is discussed. The molecular weight, polydispersity, polymerization rate, and activation energy were compared with those catalyzed by Sc (OTf) 3. The catalyst was recovered quantitatively by dissolving it in ethyl acetate and successive filtration and EPMA measurement was also carried out. The results show that the molecular weight increased without broadening of the molecular weight distributions and M n plots showed that M n increased linearly as a function of conversion. The results also indicated that PS-SC catalyzed living polymerizations of ε-caprolactone as well as Sc (OTf) 3.