Synthesis of a novel epoxy resin containing pyrene moiety and thermal properties of its cured polymer with phenol novolac

• Published in: Journal of applied polymer science 2000-01, Vol.75 (4), p.528-535
• Main Authors: Kaji, Masashi, Nakahara, Kazuhiko, Ogami, Koichiro, Endo, Takeshi
• Format: Article
• Language: English
• Subjects: anthracene derivative; Applied sciences; Chemical properties; epoxy resin; Exact sciences and technology; Model compounds; Organic polymers; phenol novolac; Physicochemistry of polymers; Polymer industry, paints, wood; Properties and testing; pyrene derivative; Technology of polymers; thermal properties
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(20000124)75:4<528::AID-APP8>3.0.CO;2-A

A new epoxy resin containing the pyrene moiety in the backbone (3) was synthesized and confirmed by gel permeation chromatography and field‐desorption mass spectroscopy and infrared spectroscopy. In addition, to evaluate the influence of the pyrene moiety on the structure, epoxy resins having an anthrylene moiety (5) and having a phenylene moiety (7) were synthesized. The cured polymer obtained through the curing reaction between 3 and phenol novolac was used for making a comparison of its thermal properties with those obtained from 5, 7, and bisphenol‐A (4,4′‐isopropylidenediphenyl)‐type epoxy resin (Bis‐EA). The cured polymer obtained from 3 showed a higher glass transition temperature, lower coefficient of linear thermal expansion, lower moisture absorption, and markedly higher anaerobic char yield at 700°C of 37.6 wt %, which might be attributed to the higher aromaticity of 3 containing the pyrene moiety. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 528–535, 2000