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Study on the Effect of Carboxyl Terminated Butadiene Acrylonitrile (CTBN) Copolymer Concentration on the Decomposition Kinetics Parameters of Blends of Glycidyl Epoxy and Non-Glycidyl Epoxy Resin

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Author(s): Garima Tripathi | Deepak Srivastava

Journal: International Journal of Organic Chemistry
ISSN 2161-4687

Volume: 01;
Issue: 03;
Start page: 105;
Date: 2011;
Original page

Keywords: Diglycidyl Ether of Bis-Phenol-A | Cycloaliphatic Epoxy Resin | Carboxyl Terminated Butadiene Acrylonotrile (CTBN) Copolymer | Thermogravimetric Analysis (TGA) | Degradation Kinetics

ABSTRACT
The degradation of the epoxy system was studied for the prepared six blend samples with the incorporation of 0 wt% - 25 wt% carboxyl terminated butadiene acrylonitrile (CTBN) copolymer, on a dynamic basis using Thermo gravimetric analysis (TGA) technique under a nitrogen atmosphere. The blends were prepared by physical mixing and were cured with diamine. The degradation of each sample followed second-order degradation kinetics, which was calculated by Coats-Redfern equation using best-fit analysis. This was further confirmed by linear regression analysis. The validity of data was checked by t-test statistical analysis. From this value of reaction order, activation energy (E), and pre-exponential factor (Z) were calculated. It was found that the activation energy increased with the addition of liquid elastomer.

Tango Jona
Tangokurs Rapperswil-Jona

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