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Enhanced Chemical Bonding at the Fiber-Matrix Interphase in Microwave Processed Composites

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Abstract

The effect of microwave processing on the chemical interactions occurring between the carbon fiber surface and the epoxy matrix constituents was investigated using X-ray Photoelectron Spectroscopy (XPS). Monofunctional model compounds of the matrix constituents were exposed to the carbon fibers at temperatures similar to those encountered during composite processing. The microwave treatment resulted in a substantial increase in the amount of chemical interaction between the fiber surface and the epoxy resin but little difference for the amine component of the matrix when compared to thermal processing. An epoxy resin/amine hardener adduct compound used to determine the hydroxyl group interaction with the carbon fiber surface indicated a low level of chemical interaction of the hydroxyl with the carbon fiber surface under the conditions used in this study.

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References

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Acknowledgments

The financial assistance of the Composite Materials and Structures Center, Michigan State University, the Research Excellence Fund of the State of Michigan and the Defense Advanced Research Projects Agency (DARPA) under contract DAAG-46-85-K-0006, P00004 is gratefully acknowledged.

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Authors and Affiliations

  1. Composite Materials and Structures Center, Department of Chemical Engineering, Michigan State University, East Lansing, Michigan, 48824-1326, USA

    L. T. Drzal, K. J. Hook & R. K. Agrawal

Authors
  1. L. T. Drzal
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  2. K. J. Hook
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  3. R. K. Agrawal
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Drzal, L.T., Hook, K.J. & Agrawal, R.K. Enhanced Chemical Bonding at the Fiber-Matrix Interphase in Microwave Processed Composites. MRS Online Proceedings Library 189, 449–454 (1990). https://doi.org/10.1557/PROC-189-449

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  • DOI: https://doi.org/10.1557/PROC-189-449

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