Moisture absorption effect on thermal, dynamic mechanical and mechanical properties of injection-molded short glass-fiber/polyamide 6,6 composites

Hassan, A. and Rahman, N.A. and Yahya, R. (2012) Moisture absorption effect on thermal, dynamic mechanical and mechanical properties of injection-molded short glass-fiber/polyamide 6,6 composites. Fibers and Polymers, 13 (7). pp. 899-906. ISSN 12299197

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Abstract

Polymer composites of polyamide 6,6 reinforced with short glass fiber were prepared by injection molding, conditioned under dry, 50 relative humidity and wet. Investigations by DSC, DMA and tensile tests were conducted. FLD study showed that more fiber degradation occurred during processing of the composites with higher fiber loading. DSC analysis revealed that the incorporation of glass fiber and moisture into the PA 6,6 matrix resulted in a remarkable decrease in the degree of crystallinity. DMA results revealed the glass transition temperatures were sensitive to moisture absorption and their values moved to a lower temperature upon exposure to moisture. Incorporation of glass fiber into the polyamide 6,6 gave rise to a significant improvement in tensile modulus and tensile strength, while tensile strain was reduced. Exposure to different environments from dry to wet conditions resulted in a decrease in the strength and modulus, while tensile strains decreased.

Item Type: Article
Uncontrolled Keywords: Conditioning effect Differential scanning calorimetry (DSC) Dynamic mechanical thermal analysis (DMTA) Mechanical properties Short-fiber composites Conditioning effects Degree of crystallinity Dynamic mechanical Dynamic mechanical thermal analysis Fiber degradation Fiber loadings Moisture absorption Polyamide 6 Polymer composite Short fiber composites Short glass fiber Tensile tests Wet conditions Differential scanning calorimetry Dynamics Glass fibers Injection molding Moisture Tensile testing Thermoanalysis Fibers
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: miss munirah saadom
Date Deposited: 05 Jul 2013 02:05
Last Modified: 05 Jul 2013 02:05
URI: http://eprints.um.edu.my/id/eprint/6735

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