Bibliographic Details
| Title: |
Glass transition temperature control by poly(norbornene-dicarboximide) copolymers. |
| Authors: |
Spring, Andrew1, Maeda, Daisuke2, Ozawa, Masaaki2, Odoi, Keisuke2, Qiu, Feng1, Yamamoto, Kazuhiro1, Yokoyama, Shiyoshi1 s_yokoyama@cm.kyushu-u.ac.jp |
| Source: |
Polymer Bulletin. Mar2015, Vol. 72 Issue 3, p503-521. 19p. |
| Subjects: |
Monomers, Metathesis reactions, Polymerization, Glass transition temperature, Dicarboximides, Proton magnetic resonance spectroscopy, Nuclear magnetic resonance spectroscopy |
| Abstract: |
By the precise combination of both cyclohexyl- and octyl-substituted norbornene-dicarboximide monomers, a series of copolymers were prepared by ring-opening metathesis polymerization utilizing the Grubbs first-generation initiator. This allowed an excellent control over the glass transition temperature between 215 and 126 °C depending upon the percentage of the octyl moiety in the copolymer. Initially two homopolymers, poly( N-cyclohexyl- exo-norbornene-5,6-dicarboximide) and poly( N-octyl- exo-norbornene-5,6-dicarboximide), were prepared to determine the desirable conditions for copolymer preparation. The kinetics of the two homopolymers were monitored using proton nuclear magnetic resonance spectroscopy and size-exclusion chromatography, with monomer conversion being achieved after 120 min in both cases. [ABSTRACT FROM AUTHOR] |
|
Copyright of Polymer Bulletin is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Engineering Source |
