TY - JOUR
T1 - Zero-shear viscosity of block copolymers in semidilute solutions
AU - Yamaguchi, Masayoshi
AU - Maeda, Norihisa
AU - Takahashi, Yoshiaki
AU - Matsushita, Yushu
AU - Noda, Ichiro
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1991/3
Y1 - 1991/3
N2 - The zero-shear viscosity η0 of styrene-2-vinylpyridine diblock copolymers in semidilute solutions was measured in pyridine (a commonly good solvent), methyl ethyl ketone (MEK) (a commonly poor solvent) at 25°C, and in benzene (a selective solvent) at 11.4°C. It was found that the reduced zero-shear viscosity ηR0 (≡ηsp0/C[η]) is expressed as a universal function of C[η] in all solvents, and the dependence of ηR0 on C[η] is determined by the exponent in the relationship between the radius of gyration and molecular weight of the block component which has the larger excluded volume, regardless of the solvent.
AB - The zero-shear viscosity η0 of styrene-2-vinylpyridine diblock copolymers in semidilute solutions was measured in pyridine (a commonly good solvent), methyl ethyl ketone (MEK) (a commonly poor solvent) at 25°C, and in benzene (a selective solvent) at 11.4°C. It was found that the reduced zero-shear viscosity ηR0 (≡ηsp0/C[η]) is expressed as a universal function of C[η] in all solvents, and the dependence of ηR0 on C[η] is determined by the exponent in the relationship between the radius of gyration and molecular weight of the block component which has the larger excluded volume, regardless of the solvent.
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U2 - 10.1295/polymj.23.227
DO - 10.1295/polymj.23.227
M3 - Article
AN - SCOPUS:0025897834
SN - 0032-3896
VL - 23
SP - 227
EP - 232
JO - Polymer Journal
JF - Polymer Journal
IS - 3
ER -