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American Chemical Society, Macromolecules, 15(41), p. 5773-5779, 2008

DOI: 10.1021/ma800698r

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Measurements of the Composition and Molecular Weight Dependence of the Flory−Huggins Interaction Parameter

Journal article published in 2008 by Alisyn J. Nedoma ORCID, Megan L. Robertson, Nisita S. Wanakule, Nitash P. Balsara
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The phase behavior of binary blends of polyolefins is studied using small-angle neutron scattering. Component 1 is polyisobutylene (PIB), and component 2 is deuterated polybutadiene (dPB). Blends of these polymers are known to exhibit lower critical solution temperatures. The scattering intensity profiles from homogeneous PIB/dPB blends are fit to the random phase approximation to determine χ, the Flory−Huggins interaction parameter. We demonstrate that χ depends on temperature, blend composition, and component molecular weights.