Curing of epoxy/alkyd blends in self-healing coating

Shahabudin, Nurshafiza and Yahya, Rosiyah and Gan, Seng Neon and Sonsudin, Faridah (2018) Curing of epoxy/alkyd blends in self-healing coating. High Performance Polymers, 30 (8). pp. 1009-1015. ISSN 0954-0083, DOI

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Self-healing of polymeric material using microcapsules has been developed to repair microcracks within the materials. The self-healing character is reflected from the curing behavior of the material. In this work, curing study of alkyd/epoxy blend was carried out by replacing part of amine hardener with alkyd in the epoxy formulation. The inclusion of alkyd in the epoxy blend resulted in higher degree of curing and higher thermal stability compared to the alkyd-free blend, as evidenced from higher heat of reaction values of differential scanning calorimetry and maximum degradation temperature at 379°C, respectively. Self-healing reaction of epoxy coating as evaluated by Fourier-transform spectroscopy revealed that the 914 cm−1 peak attributed to C–O–C of epoxy has decreased, as the epoxide group was consumed in the reaction. Appearance of a new peak at 1631–1632 cm−1 in the cured coating confirmed that the epoxide has reacted with the carboxylic acid group of alkyd to form ester.

Item Type: Article
Funders: Ministry of Science, Innovation and Technology Malaysia (MOSTI) through 03-01-03-SF0874 Grant, Ministry of Higher Education Malaysia (MOHE) through FP052-2016 Grant
Uncontrolled Keywords: Self-healing; alkyd; palm oil; epoxy; blend; curing
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Centre for Foundation Studies in Science > Chemistry Division
Faculty of Science > Department of Chemistry
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 18 Mar 2019 07:07
Last Modified: 18 Mar 2019 07:07

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