Radiochemical degelation of polymethyl methacrylate networks

POLYMER

卷:111

Article

Gilormini, Pierre¹  Richaud, Emmanuel¹  Verdu, Jacques¹ 

[1] CNRS, CNAM, ENSAM, Lab PIMM, 151 Bd Hop, F-75013 Paris, France

关键词: Polymer network;    Radiolysis;    Degelation;   

DOI  :  10.1016/j.polymer.2017.01.035

来源: Elsevier

【 摘 要 】

Methyl methacrylate-ethylene glycol dimethacrylate networks were synthetized and submitted to radiochemical degradation, with ageing monitored by means of sol-gel analysis. The networks were shown to undergo chain scission predominantly, which leads to their degelation, i.e., the recovery of a thermoplastic-like behavior with loss of all elastically active chains. The degelation dose was shown to increase with crosslink density and the corresponding critical conversion ratio was discussed regarding a recent and general statistical theory that covers radiochemical as well as chemical chain scissions. (C)2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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