SOLUBILIZATION OF POLYISOBUTYLENE BY POLYSTYRENE-BLOCK-POLY(ETHYLENE PROPYLENE) MICELLES/

Authors
QUINTANA JR SALAZAR RA KATIME I
Citation
Jr. Quintana et al., SOLUBILIZATION OF POLYISOBUTYLENE BY POLYSTYRENE-BLOCK-POLY(ETHYLENE PROPYLENE) MICELLES/, Macromolecules, 27(3), 1994, pp. 665-668
Citations number
22
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecules → ACNP
ISSN journal
00249297
Volume
27
Issue
3
Year of publication
1994
Pages
665 - 668
Database
ISI
SICI code
0024-9297(1994)27:3<665:SOPBPP>2.0.ZU;2-6
Abstract
The solubilization of polyisobutylene by micelles of polystyrene-b-pol y(ethylene/propylene) block copolymers in several ketones (dipropylket one, 5-methyl-2-hexanone, methyl isobutyl ketone, diethyl ketone, and methyl propyl ketone) has been studied. The maximum polyisobutylene co ncentration solubilized in the different copolymer/solvent systems has been determined by laser light scattering. The solubility curves have been found to be linear and dependent on the polyisobutylene molar ma ss,the chemical composition of the diblock copolymer, and the solvent. The logarithm of the maximum amount of homopolymer solubilized by gra m of copolymer varies linearly with the logarithm of the homopolymer m olar mass, and this variation is hardly dependent on the chemical comp osition of the copolymer and the precipitant character of the solvent.