The mesophase and its influence on the mechanical behaviour of composites

  • Pericles S. Theocaris
Conference paper
Part of the Advances in Polymer Science book series (POLYMER, volume 66)


A study of the structure of the boundary layer, developed between inclusion and the matrix of composites during their preparation is presented. This thin pseudo-phase was considered as an independent phase, with its own mechanical and physico-chemical properties. A three-layer model was developed, where the composite was considered as composed by three independent phases, with the intermediate phase (mesophase) between matrix and inclusions having properties depending on the properties of the constituent main phases and the mode of preparation of the composite. An improvement of this three-layer model was the multi-layer unfolding model, where the mesophase was assumed as consisting of a series of thin layers of varying mechanical properties from the inclusion- to the matrix-properties. Based on these models, an explanation of the various mechanical and physico-chemical properties of the composites may be given. It was shown, in all cases studied, that the introduction of the mesophase yields a better and more flexible means for interpreting the complicated phenomena, appearing in all composites used in practical engineering applications.


Representative Volume Element Particulate Composite Fiber Composite Polar Distance Adhesion Coefficient 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • Pericles S. Theocaris
    • 1
  1. 1.Department of Theoretical and Applied MechanicsThe National Technical University of AthensAthensGreece

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