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Mechanical Properties of Molecular Composites

  1. Masanori Hara

Published Online: 15 SEP 2011

DOI: 10.1002/9781118097298.weoc136

Wiley Encyclopedia of Composites

Wiley Encyclopedia of Composites

How to Cite

Hara, M. 2011. Mechanical Properties of Molecular Composites. Wiley Encyclopedia of Composites. 1–10.

Author Information

  1. Rutgers University, Piscataway, NJ

Publication History

  1. Published Online: 15 SEP 2011


Various methods have been developed to make molecular composites, including coagulation, in situ polymerization of a matrix polymer, and the addition of a rigid chain to a flexible chain in block copolymers. However, many systems eventually phase separate due to inherent immiscibility of component polymers on heating; thus, they are not appropriate for melt processing, usually necessary for large-scale production. In addition, most of the mechanical properties reported are tensile properties of fiber and film specimens. Bulk sample data are rare. This is again due to a lack of thermal consolidation without causing phase separation in many molecular composites. One promising approach to circumventing this problem is introduction of strong intermolecular interactions, such as ion–ion and ion–dipole interactions. In this article, after citing some results on mechanical properties of molecular composites based on nonionic rod-like molecules, mechanical properties of molecular composites made via ionic interactions (ion–dipole interactions) are described.


  • molecular composites;
  • mechanical properties;
  • ionic interactions;
  • PPTA;
  • polymer