Study of the polymerization of high-performance polymers by electrons and x-rays: 1. The case of polypropargylic-butanedioldimethacrylate systems

Abstract

We have investigated the polymerization of polypropargylic butanedioldimeth-acrylate derivatives using electron and x-ray irradiation. The results obtained with the pure resin and carbon-fibre-based composites were compared in terms of kinetics, mechanisms and properties with those obtained by thermal polymerization. Data gathered using a panoply of solid state physicochemical techniques have shown that these polymers are good systems for obtaining composites having high thermal stability at temperatures higher than 350°C.

High‐Tg and low‐dielectric epoxy thermosets based on a propargyl ether‐containing phosphinated benzoxazine

“…This first stage is related to the ring opening of the oxazine and Claisen type rearrangement of propargyl ether, and the second stage is the polymerization of the C=C bond of benzopyran. This observation is consistent with data reported in previous studies …”

“…This observation is consistent with data reported in previous studies. [19][20][21][22][23][24][25][26]…”

“…Aryl propargyl ether is known to undergo Claisen type rearrangement to benzopyran with thermal treatment, and subsequently polymerize via the curing of the C=C bond in the benzopyran structure . Preparation of propargyl ether‐containing benzoxazine has been reported by Agag and Takeichi, Kiskan et al, Chernykh et al, and Chang et al However, no dielectric properties of the propargyl‐containing benzoxazine have been discussed in the literature.…”

Deprotection‐free preparation of propargyl ether‐containing phosphinated benzoxazine and the structure–property relationship of the resulting thermosets

“…This first stage is related with the ring opening of the oxazine and Claisen rearrangement of propargyl ether, and the second stage is the curing of benzopyran. This observation is consistent with data reported in previous studies 32–40…”

“…Aryl propargyl ether is known to undergo Claisen type rearrangement to benzopyran with thermal treatment, and subsequently polymerize via the curing of the CC bond in the benzopyran structure 32–39. Agag and Takeichi prepared a propargyl ether‐containing benzoxazine (P‐appe, Fig.…”