Thermal behaviour of cardanol-based benzoxazines |
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| Authors: | Bimlesh Lochab Indra K Varma Jayashree Bijwe |
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| Institution: | (1) Industrial Tribology Machine Dynamics and Maintenance Engineering Centre (ITMMEC), IIT, Delhi, Hauz Khas, New Delhi, 110 016, India;(2) Centre for Polymer Science and Engineering (CPSE), IIT, Delhi, Hauz Khas, New Delhi, 110 016, India |
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| Abstract: | A novel benzoxazine monomer (Bz-C) based on agrochemical renewable resource—cardanol (by-product of cashew nut tree, Anacardium occidentale) was synthesized. Bz-C, a liquid monomer, was used as reactive diluent for the solventless synthesis of bisphenol-A benzoxazine
monomer (Bz-A). Benzoxazine monomer based on cardanol and bisphenol-A in 3:1, 1:1 and 1:3 blend ratio were prepared by this
method. The resins had Brookfield viscosity at 316 K in the range of 145–81,533 mPa s. The resins were characterized by 1H-NMR, FTIR and elemental analysis. Curing characteristics were studied by DSC analysis. Thermal stability of cured resins
was found to improve with increase in Bz-C content in the blends. |
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