Journal
POLYMERS
Volume 12, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/polym12020415
Keywords
benzoxazine; cerium salt; ROP; catalyst; low curing temperature
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Funding
- 'Pole d'Excellence' program of RegionWallonne (FLYCOAT project)
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The effect of three different cerium salts (Ce(NO3)(3)6H(2)O, CeCl(3)7H(2)O and Ce(OOCCH3)(3)5H(2)O) on the ring-opening polymerization (ROP) of a model diamine-based benzoxazine (4EP-pPDA) was investigated. With the incorporation of the cerium salts, the curing temperature of 4EP-pPDA is reduced substantially, and the glass transition temperatures of the resulting networks are increased significantly. The three cerium salts exhibit different catalytic activities, which were analyzed by FT-IR, NMR, and energy-dispersive X-ray (EDX). Ce(NO3)(3)6H(2)O was found to exhibit the best catalytic effect, which seems to be related to its better dispersibility within 4EP-pPDA benzoxazine precursors.
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