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Water Absorption Bhavior of PALF/GF Hybrid PolyesterComposites

Publication Type : Journal Article

Publisher : Polymer Composites

Source : Polymer Composites, Volume 32, Number 3, p.335-346 (2011)

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Keywords : Absorption characteristics, Chemically modified, Diffusion, Diffusion properties, Distilled water, Effect of temperature, Environmental ageing, Fiber contents, Glass fiber reinforced plastics, Glass fibers, Hybrid composites, Hybrid materials, Kinetics and thermodynamics, Methoxy, Permeability coefficients, Pineapple leaf fiber, Polyester composites, Sorption, temperature, Theoretical prediction, thermodynamics, Three temperature, water absorption, Water absorption behavior, Water content, Water uptake

Campus : Coimbatore

School : School of Engineering

Department : Chemical

Year : 2011

Abstract : The water absorption characteristics of pineapple leaf fiber (PALF)/glass fiber (GF) hybrid polyester(PER) composites, and chemically modified PALF/polyester composites were evaluated by immersion in distilled water at 28, 60, and 90°C. The diffusion properties of the intimately mixed (IM) and the layered hybrid composite GPG (Glass skin and PALF core) of different PALF/GF ratio at the three temperatures were compared in order to identify the environmental ageing mechanism at different temperatures. The effect of temperature on the kinetics and thermodynamics of diffusion were also examined. The water uptake of both IM and GPG hybrid composites was decreased with increase in glass fiber content; the lowest water uptake was observed for 0.46 V f GF hybrid composite. Among the chemically modified composites, vinyl tri 2-methoxy ethoxy silane treated composites showed the lowest water uptake. Finally, parameters like diffusion, sorption, and permeability coefficients were determined. It was observed that equilibrium water uptake is dependent on the nature of the composite and temperature. Experimental results were also compared with theoretical predictions.

Cite this Research Publication : L. U. Devi, Bhagawan, S. S., Nair, K. C. M., and S. Thomas, “Water Absorption Bhavior of PALF/GF Hybrid PolyesterComposites”, Polymer Composites, vol. 32, pp. 335-346, 2011.

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