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Morphology Development Associated With Polymer Blends

Published online by Cambridge University Press:  01 February 2011

Tomoko Hashida ,
Ying Hua ,
Shaw Ling Hsu  and
Charles W. Paul
Tomoko Hashida
Affiliation:
Polymer Science and Engineering Department and Material Research Science and Engineering Center, University of Massachusetts, Amherst, MA 01003, U.S.A.
Ying Hua
Affiliation:
Polymer Science and Engineering Department and Material Research Science and Engineering Center, University of Massachusetts, Amherst, MA 01003, U.S.A.
Shaw Ling Hsu
Affiliation:
Polymer Science and Engineering Department and Material Research Science and Engineering Center, University of Massachusetts, Amherst, MA 01003, U.S.A.
Charles W. Paul
Affiliation:
National Starch & Chemical, Bridgewater, NJ 08807, U.S.A.
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Abstract

Morphology development of crystallizable polymer blends has been investigated using optical microscopy, thermal analysis, and vibrational spectroscopy. The blends studied involve crystallizable polyesters of poly(hexamethylene adipate) (PHMA) and poly(hexamethylene sebacate) (PHMS) and non-crystallizable poly(propylene glycol) (PPG). Although these polyesters possess similar chemical structure, they exhibit different phase behavior. Ternary blends including a high glass transition temperature (Tg) component were also studied. Crystallization kinetics in these blends was obtained utilizing Fourier transform infrared spectroscopy. Micro-Raman spectroscopy capable of achieving high spatial resolution (1 μm2) revealed detailed morphological differences in the phase-separated structures. This technique made possible for the first time characterization of the chemical composition of the blends and distribution of crystallites. The role of the third relative immobile component significantly changed both chemical distribution and the degree of crystallinity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 856: Symposium BB – Multicomponent Polymer Systems-Phase Behavior, Dynamics, and Applications , 2004 , BB11.3
Copyright
Copyright © Materials Research Society 2005

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References

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