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Crystallization From Polymer Blends

Published online by Cambridge University Press:  15 February 2011

Richard S. Stein
Richard S. Stein*
Affiliation:
University of Massachusetts, Amherst, MA 01003
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Abstract

Binary polymer blends in which one or both components crystallize have beenconsidered. These May be miscible or immiscible in the amorphous state, andphase separation may occur along with crystallization. The rates of thesetwo processes vary differently with temperature, so the consequentmorphology and properties depend upon the temperature history. For Miscibleblends, the glass transition temperature depends upon composition. Thisaffects diffusion so that crystallization kinetics varies as compositionchanges. If only one component crystallizes and the other is rejected, thisrejected component diffuses away from the growing crystalline regions in amanner dependent upon the interaction between components.

These phenomena are studied using a variety of techniques such ascalorimetry, x-ray diffraction and scattering, and small-angle light andneutron scattering for a number of polymer systems.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 531
Copyright
Copyright © Materials Research Society 1994

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References

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