Curing Kinetics of Epoxy Resin of (2E, 6E) 2,6-Bis (4-hydroxy benzylidene) Cyclohexanone

By : Dharmesh B. Sankhavara , Jalpa V. Chopda , Jignesh P. Patel , Parsotam H. Parsania

Page No: 11-19

Abstract
The curing of epoxy resin of (2E, 6E)-2,6-bis(4-hydroxy benzylidene) cyclohexanone (EBHBC) was carried out at four different heating rates in the nitrogen atmosphere by using 4,4’-diamino diphenylmethane (DDM), 4,4’-diamino diphenyl sulfone (DDS), and 1,2,3,6-tetrahydrophthalic anhydride (THPA) as hardeners. From DSC curves onset, peak exotherm and end set temperatures, as well as heat release, were derived. The energy of activation was derived following Kissinger and Ozawa methods. Observed trend in Ea is EBHBC-THPA > EBHBCDDS > EBHBC-DDM > EBHBC. Nature and chemical structure of the hardeners affected the curing of EBHBC.

Authors :
Dharmesh B. Sankhavara
Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India.

Jalpa V. Chopda
Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India.

Jignesh P. Patel
Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India.

Parsotam H. Parsania
Department of Chemistry, Saurashtra University, Rajkot-360 005, Gujarat, India.
 

DOI: https://doi.org/10.32381/JPM.2021.38.1-2.2