Homologous Poly(isobutylene)s: Poly(isobutylene)/High-Density Poly(ethylene) Hybrid Polymers
Homologous Poly(isobutylene)s: Poly(isobutylene)/High-Density Poly(ethylene) Hybrid Polymers
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DOI：
10.1021/ma801465r
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发表时间：
2008-11-25
期刊：
影响因子：
5.5
通讯作者：
Buchmeiser, Michael R.
中科院分区：
文献类型：
--
作者：
Binder, Wolfgang H.;Kurzhals, Steffen;Buchmeiser, Michael R.
本文报道了聚（均异丁烯）和聚（均α-甲基苯乙烯）的合成及其热性能。基于3，3-二甲基环丙烯和3-甲基-3-苯基环丙烯的开环易位聚合（ROMP），生成各自的开环聚合物。使用了几种催化体系（第一代（1）、第二代（11）、第三代Grubbs型（IV）和Schrock型引发剂Mo（N-2，6-iPr（2）C（6）H（3））（CHCMe 2 Ph）（OCMe 3）（2）（III））。特别地，II、III和IV在3-甲基-3-苯基-环丙烯的情况下提供了活性聚合反应的途径，然而，不是用3，3-二甲基环丙烯。用甲苯磺酰肼对所得ROMP聚合物进行氢化，以高产率得到聚（均异丁烯）和聚（均-α-甲基苯乙烯）。热测量（DSC测量）显示T-g-和T-m-值位于聚（异丁烯），聚（苯乙烯），和高密度聚（乙烯）之间。
We report on the synthesis of poly (homo-isobutylene) and poly(homo-alpha-methylstyrene) and the thermal properties of these new polymers. Based on the ring-opening metathesis polymerization (ROMP) of 3,3-dimethylcyclopropene and 3-methyl-3-phenyl-cyclopropene, the respective ring-opened polymers were generated. Several catalytic systems (first-generation (1), second-generation (11), third-generation Grubbs-type (IV) and the Schrock-type initiator Mo(N-2,6-iPr(2)C(6)H(3))(CHCMe2Ph)(OCMe3)(2) (III) were used. Particularly II, III and IV offered access to living polymerization reactions in the case of 3-methyl-3-phenyl-cyclopropene, however, not with 3,3-dimethylcyclopropene. The obtained ROMP-polymers were hydrogenated using tosylhydrazide, furnishing poly(homo-isobutylene) and poly(homo-alpha-methylstyrene) in high yields. Thermal-measurements (DSC-measurements) revealed T-g- and T-m-values located between those of poly (isobutylene), poly(styrene), and high-density poly(ethylene).