TITLE

Field-theoretical approach to critical microphase behavior of symmetric crosslinked polymer blends

AUTHOR(S)
Benhamou, Mabrouk
PUB. DATE
April 1995
SOURCE
Journal of Chemical Physics;4/8/1995, Vol. 102 Issue 14, p5854
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Critical properties of symmetric crosslinked binary polymer mixtures is studied using the renormalization-group. It is assumed that chains have a low-molecular-weight, in order to have a wide critical regime where a nonclassical behavior is observed. Use is made of a scalar field model of φ4 type, where the order parameter φ is the local fluctuations in the composition. The parameters of the problem are the temperature t∝χ0-χ, the rigidity constant of the gel C, and the coupling constant u. χ is the Flory interaction parameter, χ0=2/N its critical value if the system is uncrosslinked, and N the degree of polymerization. We first show that the set of demixing critical points is a continuous line, in the two-dimensional half-space of parameters -∞
ACCESSION #
7647419

 

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