Moisture diffusion behavior in bismaleimide resin subjected to hygrothermal cycling

Authors

  • Yanmei Li,

    1. Polymer Technology Center, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123
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  • John Miranda,

    1. Polymer Technology Center, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123
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  • Hung-Jue Sue

    Corresponding author
    1. Polymer Technology Center, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123
    • Polymer Technology Center, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123
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Abstract

Absorption-desorption-reabsorption hygrothermal cycling was performed in bismaleimide resin. Dynamic mechanical analysis and swelling experiments were conducted to investigate the effect of hygrothermal cycling on the moisture diffusion behavior in the resin. Non-Fickian diffusion behavior was observed in both the absorption and the reabsorption processes, while the desorption process is found to be Fickian. The molecular network structure of BMI appears to have changed during the hygrothermal cycling. This, in turn, altered the subsequent reabsorption process.

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