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PUBLICATIONS

Beyond Flory-Huggins Theory: New Classes of Blend Miscibility Associated With Monomer Structural Asymmetry

Published

Author(s)

J Dudowicz, Karl Freed, Jack F. Douglas

Abstract

Flory-Huggins (FH) theory is restricted to polymer mixtures whose monomers are structurally identical- a situation limited to isotopic blends and computer simulations. We systematically investigate the influence of monomer structure on blend miscibility and scattering properties using the lattice cluster theory (LCT) generalization of the FH model. Monomer structural assymetry is shown to profoundly affect blend miscibility, chain swelling and the scale and intensity of composition fluctuations. Four distinct miscibility classes are identified and experimental evidence for these classes is discussed.
Citation
Physical Review Letters
Volume
88
Issue
No. 9
Pub Type
Journals

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Keywords

blend miscibility classes, critical temperature, Flory-Huggins theory, monomer structure, phase separation, polymer blends, simplified lattice cluster theory, structural asymmetry, theta temperature

Citation

Dudowicz, J. , Freed, K. and Douglas, J. (2002), Beyond Flory-Huggins Theory: New Classes of Blend Miscibility Associated With Monomer Structural Asymmetry, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851994 (Accessed October 14, 2025)

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Created February 28, 2002, Updated October 12, 2021
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