Phenomenological modelling of polymer crystallization using the notion of multiple natural configurations

I. J. Rao, K. R. Rajagopal

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


Crystallization and solidification in polymers is a problem of great importance to the polymer processing industry. In these processes, the melt is subjected to deformation while being cooled into the desired shape. The properties of the final product are strongly influenced by the deformation and thermal histories and the final solid is invariably anisotropic. In this work we present a model to capture the effects during solidification and crystallization in polymers within a purely mechanical setting, using the framework of multiple natural configurations that was introduced recently to study a variety of non-linear dissipative responses of materials undergoing phase transitions. Using this framework we present a consistent method to model the transition from a fluid-like behaviour to a solid-like behaviour. We also present a novel way of incorporating the formation of an anisotropic crystalline phase in the melt. The anisotropy of the crystalline phase, and consequently that of the final solid, depends on the deformation in the melt at the instant of crystallization, a fact that has been known for a long time and has been exploited in polymer processing. The proposed model is tested by solving three homogenous deformations.

Original languageEnglish (US)
Pages (from-to)73-94
Number of pages22
JournalInterfaces and Free Boundaries
Issue number1
StatePublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Applied Mathematics


Dive into the research topics of 'Phenomenological modelling of polymer crystallization using the notion of multiple natural configurations'. Together they form a unique fingerprint.

Cite this