Journal
POLYMER INTERNATIONAL
Volume 66, Issue 6, Pages 908-915Publisher
WILEY
DOI: 10.1002/pi.5335
Keywords
benzoxazine; polysiloxane; polymerization kinetics; thermal stability
Categories
Funding
- National Natural Science Foundation of China [51403051, 21502042]
- Foundation of Henan Educational Committee [16A150003, 15A150041]
- Science and Technology Development Programme of Henan Province of China [162102210023, 142300410122]
Ask authors/readers for more resources
A benzoxazine with siloxane and phenyl sulfone units (BS-b) was synthesized by using aminopropyltriethoxysilane, 4,4'-dihydroxydiphenylsulfone and paraformaldehyde as precursors via Mannich condensation. Then the hydrolysis and polycondensation reactions of siloxane units were performed and benzoxazine bearing polysiloxanes (BS-PSO) were obtained. The ring-opening polymerization reactions of both BS-b and BS-PSO were studied by Fourier transform IR spectroscopy and DSC in non-isothermal conditions. The kinetics of the polymerization of BS-b were found to be well described by using an nth-order kinetic model for n = 0.7 (activation energy 141 kJ mol(-1)). The BS-PSO was also used to modify bisphenol-A-based benzoxazines (BA-a), and the morphological structure and thermal properties of the copolymer were investigated. The TGA results indicate that the silane-functional polybenzoxazines display enhanced initial decomposition temperature and char yields in comparison with poly(BA-a). These results are believed to be important for the development of new flame-retardant laminates. (C) 2017 Society of Chemical Industry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available