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Cited by 388

The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.

Spinodal decomposition of a symmetric critical mixture of deuterated and protonated polymer

Bates, Frank S., Wiltzius, Pierre·1989·The Journal of Chemical Physics
DOI 10.1063/1.456901
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Abstract

A nearly symmetric critical mixture (φc=0.486) of perdeuterated and protonated 1,4-polybutadiene exhibiting an upper critical solution temperature Tc=61.5±1.5 °C has been quenched from the homogeneous state (≂75 °C) to various temperatures between 25 and 57.5 °C. Light scattering measurements document the subsequent spinodal decomposition process which we describe based on a four-stage model: early, intermediate, transition, and final. The early stage is accounted for by the Cahn theory, yielding initial correlation lengths and effective diffusion coefficients in quantitative agreement with mean-field predictions. Nonlinear effects mark the beginning of the intermediate stage, which exhibits a simple power-law growth of heterogeneity length Lm(t)∼tneff, but with a temperature dependent exponent neff. As the composition fluctuation amplitude approaches the equilibrium values, the spinodal decomposition process enters the transition stage, characterized by a decreasing interfacial thickness and an increasing Lm(t). Once the interfacial profile equilibrates, a crossover to the final stage occurs. Subsequent growth of L(t) leaves the morphology unaffected as evidenced by a universal structure factor. These findings are discussed in the context of the current theory and are compared with prior studies involving polymer–polymer and simple liquid mixtures.

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Metadata

Authors
Bates, F. S., & Wiltzius, P.
Venue
The Journal of Chemical Physics
Publisher
AIP Publishing
Published
1989-09-01
Volume
91
Issue
5
Pages
3258-3274
ISSN
  • 0021-9606 (ISSN-L)
  • 1089-7690
DOI
10.1063/1.456901
OpenAlex
W2059184359
Cited by
388
References
41
FWCI
21.16
Type
journal article
Language
en
Open access
closed

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