Hydrocarbon polymers containing six-membered rings in the main chain. Microstructure and properties of poly(1,3-cyclohexadiene)

✍ Scribed by Itaru Natori; Kimio Imaizumi; Hideyuki Yamagishi; Miyuki Kazunori

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 299 KB
• Volume: 36
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(19980730)36:10<1657::aid-polb7>3.0.co;2-m

✦ Synopsis

The relationship between the microstructure and the properties of poly(1,3cyclohexadiene)s, obtained by living anionic polymerization with an alkyllithium/ amine system, and their hydrogenated derivatives are reported. The 1,2-bond/1,4-bond molar ratio of poly(1,3-cyclohexadiene) was determined by measuring 2D-NMR with the H{H COSY method. The glass transition temperature of poly(1,3-cyclohexadiene) was found to rise with an increase in the ratio of 1,2-bonds to 1,4-bonds or with an increase of the number average molecular weight. The 1,2-bond of the polymer chain gives a high flexural strength and heat distortion temperature. Hydrogenated poly(1,3cyclohexadiene) has the highest T g (231ЊC) among all hydrocarbon polymers ever reported. 1,3-Cyclohexadiene-butadiene-1,3-cyclohexadiene triblock copolymer and 1,3cyclohexadiene-styrene-1,3-cyclohexadiene triblock copolymer have high heat resistance and high mechanical strength.