Ultrahigh Tg Epoxy Thermosets Based on Insertion Polynorbornenes
Autor: | Xu Li, Basile Commarieu, Sylvain Dessureault, Moubarak Compaore, Jonathan Potier, Brian L. Goodall, Jerome P. Claverie |
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Rok vydání: | 2016 |
Předmět: |
Materials science
Polymers and Plastics Organic Chemistry Thermosetting polymer 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Polymerization visual_art Polymer chemistry Materials Chemistry Molecular motion visual_art.visual_art_medium Degradation (geology) 0210 nano-technology Glass transition |
Zdroj: | Macromolecules. 49:920-925 |
ISSN: | 1520-5835 0024-9297 |
DOI: | 10.1021/acs.macromol.5b02648 |
Popis: | Thermosetting materials (thermosets) are widely used organic materials derived from 3D-network forming monomers. Achieving high glass transition temperature (Tg) 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 Tg 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 Tg higher than 300 °C and devoid of degradation at this temperature. Thus, this study clearly demonstrates the viability of catalytic polymerization to access epoxy th... |
Databáze: | OpenAIRE |
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