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ARTICLE
Curing Study of Epoxy Resin of (2E, 6E)-Bis (4-hydroxybenzylidene)-4-methylcyclohexanone with Different Aromatic Diamines and Anhydrides Hardeners: Spectral and Thermal Analysis
JALPA V. CHOPDA, DHARMESH B. SANKHAVARA, JIGNESH P. PATEL, P. H. PARSANIA*
Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India
* Corresponding Authors: e-mail: ,
Journal of Polymer Materials 2021, 38(1-2), 35-48. https://doi.org/10.32381/JPM.2021.38.1-2.4
Abstract
Conventional curing study of epoxy resin of (2E, 6E)-bis (4-hydroxybenzylidene)-4-methyl
cyclohexanone (EMBHBC) was conducted at 140 0
/150 0
C by using 4,4’-diaminodiphenylmethane
(DDM),4,4’-diaminodiphenylsulphone (DDS),4-4’-diaminodiphenyl ether (DDE),
p-phenylenediamine (PDA), 1,2,3,6-tetrahydrophthalic anhydride(THPA), maleic anhydride (MAH)
and pyromellitic dianhydride (PMDA). The gel time for DDS, THPA and DDM hardeners are
found considerably longer than those of DDE, PDA, MAH and PMDA systems indicated different
reactivity towards curing of EMBHBC. Sol–gel analysis of cured resins was carried out in DMF
at room temperature. Diamines cured samples showed 76.3-97.5% gel fractions, while anhydrides
cured samples showed 84.6-99.6% gel fractions. DDM, PDA and THPA are found suitable
hardeners for curing of EMBHBC. Cured EMBHBC samples are characterized by FTIR, DSC
and TGA techniques. DSC endothermic/exothermic transitions supported either physical or
chemical change as supported by TGA. Diamines and anhydrides cured EMBHBC are thermally
stable up to 224–315 0
C and 237–300 0
C, respectively and followed two step degradation reactions
except EMBHBC-PDA and EMBHBC-MAH. Diamines and anhydrides cured EMBHBC showed
respectively 30–52% and 32–41% residues at 700 0
C. Use of selected hardeners affected
curing and thermal behavior of the cured epoxy resins under selected experimental conditions.
Keywords
Cite This Article
APA Style
CHOPDA, J.V., SANKHAVARA, D.B., PATEL, J.P., PARSANIA, P.H. (2021). Curing study of epoxy resin of (2E, 6e)-bis (4-hydroxybenzylidene)-4-methylcyclohexanone with different aromatic diamines and anhydrides hardeners: spectral and thermal analysis. Journal of Polymer Materials, 38(1-2), 35-48. https://doi.org/10.32381/JPM.2021.38.1-2.4
Vancouver Style
CHOPDA JV, SANKHAVARA DB, PATEL JP, PARSANIA PH. Curing study of epoxy resin of (2E, 6e)-bis (4-hydroxybenzylidene)-4-methylcyclohexanone with different aromatic diamines and anhydrides hardeners: spectral and thermal analysis. J Polym Materials . 2021;38(1-2):35-48 https://doi.org/10.32381/JPM.2021.38.1-2.4
IEEE Style
J.V. CHOPDA, D.B. SANKHAVARA, J.P. PATEL, and P.H. PARSANIA "Curing Study of Epoxy Resin of (2E, 6E)-Bis (4-hydroxybenzylidene)-4-methylcyclohexanone with Different Aromatic Diamines and Anhydrides Hardeners: Spectral and Thermal Analysis," J. Polym. Materials , vol. 38, no. 1-2, pp. 35-48. 2021. https://doi.org/10.32381/JPM.2021.38.1-2.4