Chemical structure and physical properties of cyclic olefin copolymers - (IUPAC technical report)
Chemical structure and physical properties of cyclic olefin copolymers - (IUPAC technical report)
复制标题
DOI：
10.1351/pac200577050801
复制
发表时间：
2005-05-01
影响因子：
1.8
通讯作者：
Kim, SC
中科院分区：
文献类型：
--
作者：
Shin, JY;Park, JY;Kim, SC
环烯烃共聚物包括一类新的聚合物材料，其显示出高玻璃化转变温度、光学透明度、低收缩率、低吸湿性和低双折射的性质。基于不同类型的环状单体和聚合方法，存在几种类型的环烯烃共聚物。在这项工作中，我们已经分析了目前商业化的环烯烃共聚物的化学结构的C-13 NMR，并研究了它们的玻璃化转变温度和表面特性。有人观察到，环烯烃共聚物的玻璃化转变温度，To，取决于主链的蓬松度，和环的数目在增加环烯烃共聚物的蓬松度中具有重要的作用。具有极性取代基如酯基或醚基的环烯烃共聚物显示出高的单位面积表面能和剥离强度。
Cyclic olefin copolymers comprise a new class of polymeric materials showing properties of high glass-transition temperature, optical clarity, low shrinkage, low moisture absorption, and low birefringence. There are several types of cyclic olefin copolymers based on different types of cyclic monomers and polymerization methods. In this work, we have analyzed the chemical structure of the currently commercialized cyclic olefin copolymers by C-13 NMR, and investigated their glass-transition temperatures and surface characteristics. It was observed that the glass-transition temperature, To, of cyclic olefin copolymers depended on the bulkiness of the main chain, and the number of rings had an important role in increasing the bulkiness of cyclic olefin copolymers. Cyclic olefin copolymers with polar substituents such as ester or ether groups showed high surface energy per area and peel strength.