Studies on cardanol-based epoxidized novolac resin and its blends
Електронний науковий архів Науково-технічної бібліотеки Національного університету "Львівська політехніка"
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Studies on cardanol-based epoxidized novolac resin and its blends
Вивчення епоксидних новолачних смол на основі карданолу та їх сумішей |
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| Creator |
Yadav, Ranjana
Srivastava, Deepak |
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| Subject |
cardanol
formaldehyde novolac epichlorohydrin epoxy resin butadiene acrylonitrile copolymer spectral methods |
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| Description |
Cardanol-based novolac-type phenolic resin was synthesized with a mole ratio 1.0:0.5 of cardanol-toformaldehyde using a dicarboxylic acid catalyst such as succinic acid. The cardanol-based novolac-type phenolic resin may further be modified by epoxidation with epichlorohydrin excess at 393 K in a basic medium to duplicate the performance of such phenolic-type novolacs. Carboxyl-terminated butadiene acrylonitrile copolymer (CTBN) has been studied by various researches with diglycidyl ether of bisphenol-A (DEGBA) epoxy resin and epoxidized phenolic novolac resins. The epoxidized novolac resin was blended with different weight ratios of carboxyl-terminated butadiene acrylonitrile copolymer (CTBN) and cured with a stoichiometric amount of polyamine curing agent. The formation of various products during the synthesis of cardanol-based novolac resin, epoxodized novolac resin and blending of epoxidized novolac resin with CTBN has been studied by Fouriertransform infrared (FTIR) spectroscopic analysis. Further, the products were confirmed by a proton nuclear magnetic resonance (1H-NMR) spectroscopic analysis. The number average molecular weight was determined by a gel permeation chromatography (GPC) analysis. The blend sample, having 15 wt % CTBN concentration showed minimum cure time and most thermally stable systems. |
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| Date |
2009-09-11T10:18:45Z
2009-09-11T10:18:45Z 2008 |
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| Type |
Article
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| Identifier |
Yadav, R. Studies on cardanol-based epoxidized novolac resin and its blends / Ranjana Yadav, Deepak Srivastava // Chemistry & Chemical Technology. – 2008. – Volume 2, number 3. – P. 173–184. – Bibliography: 40 titles.
http://ena.lp.edu.ua:8080/handle/ntb/1454 |
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| Publisher |
Publishing House of Lviv Polytechnic National University
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