Thermodynamic modeling of the thermomechanical effects of polymer crystallization: A general theoretical structure

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Abstract

A general theoretical structure is developed based on continuum thermodynamics to model the thermomechanical effects of polymer crystallization. This phase transition, seen in many polymers, involves the gradual transformation of the polymer's microstructure from an unorganized amorphous structure to that of a much more rigid semi-crystalline structure. This smooth transition is captured by a set of integral models which obtain the response by averaging the apparent response of the amorphous portion and a continuum of different crystals. A commonly used empirical relation between the extent of crystallization and volume change is imposed as a restriction on the material, and the implication of the entropy production inequality in the presence of this constraint is evaluated. General representations are provided.

Original languageEnglish (US)
Pages (from-to)277-298
Number of pages22
JournalInternational Journal of Engineering Science
Volume35
Issue number3
DOIs
StatePublished - Feb 1997

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Mechanics of Materials
  • Mechanical Engineering

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