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Novel epoxidized hyperbranched poly(phenylene oxide): Synthesis and application as a modifier for diglycidyl ether of bisphenol A
Author(s) -
Lv Jianyong,
Meng Yan,
He Lifan,
Qiu Teng,
Li Xiaoyu,
Wang Haiqiao
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38270
Subject(s) - diglycidyl ether , materials science , epoxy , bisphenol a , phenylene , ether , polymer chemistry , fourier transform infrared spectroscopy , curing (chemistry) , dynamic mechanical analysis , cyanate ester , thermosetting polymer , thermal stability , oxide , bisphenol , propylene oxide , polymer , chemical engineering , composite material , copolymer , ethylene oxide , organic chemistry , chemistry , metallurgy , engineering
A novel epoxidized hyperbranched poly(phenylene oxide) (EHPPO) is designed and synthesized successfully. The structure of EHPPO is characterized by Fourier transform infrared spectra‐ and quantitative 13 C nuclear magnetic resonance spectrum. The synthesized EHPPO is added into diglycidyl ether of bisphenol A as a modifier in different ratios to form hybrids and cured by an anhydride curing agent. Effects of EHPPO addition on the properties of the cured hybrids are investigated. Thermal mechanical analysis results suggest that addition of EHPPO can increase the free volume of the cured hybrid materials. Dynamic mechanical analysis characterizations show that the crosslinking density increases with the increase in EHPPO content. Furthermore, addition of EHPPO results in an improvement in thermal and mechanical properties. The toughening mechanism is also discussed. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013