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Reference type: Journal
Authors: Srebnik S
Article Title: Phase behavior of physically cross-linked asymmetric random heteropolymers.
Publication date: 2005
Journal: Physical Review E
Volume: 72
Issue: (5)
Page numbers: Art. No. 051802.
DOI: 10.1103/PhysRevE.72.051802
Alternative URL: http://gwri-ic.technion.ac.il/pdf/Professors/Simcha_Srebnik/21.pdf

Abstract: We study the phase behavior of physically cross-linked asymmetric copolymer networks where the composition of the minor component is small (<10%). The effects of the degree of cross-linking and monomermonomer interactions on the microstructure of the network are considered. Two cases of cross-links are considered: (1) cross-linking of the majority component only, i.e., inhomogeneous cross-linking, and (2) cross-linking between all types of monomers with equal probability. It is found that for a given set of parameters, both the degree of physical cross-linking and competing (segregating) interactions between the monomers can each be used to induce microphase segregation, or the aggregation of the minor component into ordered microdomains. The type of cross-linking is found to affect the final morphology of the gel while interactions enhance the degree of segregation.

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