Ultrahigh Tg Epoxy Thermosets Based on Insertion Polynorbornenes

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• 作者：Basile Commarieu ; Jonathan Potier ; Moubarak Compaore ; Sylvain Dessureault ; Brian L. Goodall ; Xu Li ; Jerome P. Claverie
• 刊名：Macromolecules
• 出版年：2016
• 出版时间：February 9, 2016
• 年：2016
• 卷：49
• 期：3
• 页码：920-925
• 全文大小：362K
• ISSN：1520-5835

文摘

Thermosetting materials (thermosets) are widely used organic materials derived from 3D-network forming monomers. Achieving high glass transition temperature (T_g) thermosets is often a challenging task due to the complexity of designing efficiently and cheaply monomers which are rigid enough to prevent molecular motions within the thermoset. We report here a very simple route to prepare epoxy thermosets with T_g as high as 350 °C, based on insertion polynorbornenes. The epoxy monomer (PNBE(epoxy)) is prepared by the epoxidation of poly(5-vinylnorbornene) obtained by catalytic insertion polymerization of 5-vinylnorbornene. PNBE(epoxy) can be cross-linked with simple biosourced compounds. Alternatively, polar insertion polynorbornene can also be used as cross-linker in the formulation of an epoxy resin, once again resulting in epoxy resins with T_g higher than 300 °C and devoid of degradation at this temperature. Thus, this study clearly demonstrates the viability of catalytic polymerization to access epoxy thermosets with ultrahigh T_g.