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Miscibility of poly(aromatic acrylate)s and methacrylates with styrene/acrylonitrile copolymers

Sankarapandian, M and Kishore, K (1994) Miscibility of poly(aromatic acrylate)s and methacrylates with styrene/acrylonitrile copolymers. In: Macromolecules, 27 (25). 7278 -7282 .

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ma00103a007

Abstract

Miscibilities of some poly[aromatic (meth)crylate]s namely, poly(phenyl acrylate) (PPA, poly(phenyl methacrylate) (PPMA), poly(benzyl acrylate) (PBA), and poly(benzyl methacrylate) (PBMA)/polystyrene blends, have been studied through the so-called copolymer effect by incorporating acrylonitrile units in PS chains. In these systems, miscibility occurs on account of the strong repulsion between the acrylonitrile and styrene units in the copolymer. PBA and PBMA were blended with different styrene-acrylonitrile (SAN) copolymers. A miscibility window has been identified for the latter system, and from these limits, the binary interaction energy density parameters (Bij's) were calculated. Using these values, the miscibilities in other homopolymer-copolymer and copolymer-copolymer systems containing benzyl methacrylate, acrylonitrile, and styrene monomer units have been predicted and subsequently verified experimentally. The miscibility window limits in poly[aromatic (meth)acrylate]s/SAN copolymer blends have been compared. PBA does not exhibit a miscibility window with SAN copolymers, which has been explained by the weak intramolecular hydrogen bonding in PBA. The miscibility window in the PBMA/SAN copolymer system, as observed by DSC, shows a considerable narrowing in nonradiative energy transfer (NRET) measurements, as this technique is more sensitive.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American chemical society.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 18 Apr 2011 05:38
Last Modified: 18 Apr 2011 05:38
URI: http://eprints.iisc.ernet.in/id/eprint/36643

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