Effect of phenol concentration on cure and epoxide equivalent weight (EEW) of cardanol based epoxidized novolac type phenolic resins / Priti Shukla in PAINTINDIA, Vol. LX, N° 9 (09/2010)

[article]  inPAINTINDIA > Vol. LX, N° 9 (09/2010) . - p. 85-96 Titre : Effect of phenol concentration on cure and epoxide equivalent weight (EEW) of cardanol based epoxidized novolac type phenolic resins Type de document : texte imprimé Auteurs : Priti Shukla, Auteur ; S. B. Yadaw, Auteur ; Deepak Srivastava, Auteur Année de publication : 2010 Article en page(s) : p. 85-96 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Chromatographie sur gel Epoxydes Fourier, Spectroscopie infrarouge à transformée de Phénoplastes Résonance magnétique nucléaire Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : Cardanol-based epoxidized novolac type phenolic resins were synthesized with molar excess of epichlorohydrin and phenolic resins based on phenol caidanol formaldehyde, in alkaline medium, at a temperature of 120°C for about 10 h. The synthesized resins were characterized by fourier-transform infrared spectroscopic (FT-IR), nuclear magnetic resonance (MMR) spectroscopis and gel-permeation chromatographic (GPC) analysis. All the samples were cured at 120°C, as obtained from DSC scan. It was also found that the cure time decreased as the phenol content was increased in the epoxy matrices containing both phenol and cardanol. The presence of phenol moiety in such epoxidized novolac resins increased the epoxide equivalent weight (EEW) upto a certain level and decreased thereafter. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10488 [article]

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