Factors Mfecting Moisture Absorption in Polymer Composites13; Part ll: Influence of External Factors

Rao, RMVGK and Chanda, Manas and Balasubramanian, N (1984) Factors Mfecting Moisture Absorption in Polymer Composites13; Part ll: Influence of External Factors. Journal of Reinforced Plastics and Composites, 3 . pp. 246-253. ISSN 0731-6844

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    Abstract

    The influence of external factors like relative humidity (0) and ambient temperature .m on the moisture absorption behaviour of permeable {Jute-Epoxy)Land impermeable13; (Glass Epoxy and Graphite-Epoxy) types of composites were reported. The respective equilibrium moisture contents (M and Mm) increased exponentially relative humidity. The diffusion coefficients of both type of composites :and Dc) increased with ambient temperature and could be represented by an Arrhenius relationship.13; The permeable composite showed a higher exponential power on the relative humidity term than the impermeable composite (2.64 for Jute composite as compared to 2.0 reported by Shen and Springer for a graphite composite) and a lower activation energy for diffusion (0.9 x 103 cal. mole-t for the jute composite as compared to 4.429 x 103cal. mole-t obtained for a glass composite). These trends were attributed to the fibre permeability leading to different diffusion barriers in such composites.13;

    Item Type: Journal Article
    Uncontrolled Keywords: Factors moisture absorption;Polymer composites Part ll: Influence of external factors
    Subjects: CHEMISTRY AND MATERIALS > Composite Materials
    Division/Department: Materials Science Division, Other, Other
    Depositing User: Ms Indrani V
    Date Deposited: 17 Mar 2006
    Last Modified: 24 May 2010 09:40
    URI: http://nal-ir.nal.res.in/id/eprint/1107

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