Hydrogen bonding effect on probe diffusion in semidilute polymer solutions: Polymer chain structure dependence

被引:26
作者
Park, HS [1 ]
Sung, JM [1 ]
Chang, TH [1 ]
机构
[1] POSTECH,DEPT CHEM,POHANG 790784,SOUTH KOREA
关键词
D O I
10.1021/ma951666u
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The diffusivity of 4-[[4'-(dimethylamino)phenyl]azo]benzoic acid (p-MR) in poly(methyl methacrylate) (PMMA)/toluene solution was found to be much lower than in polystyrene solution due to the hydrogen bonding interaction between the diffusant and the polymer matrix. In order to study the effect of the II-bonding interaction in a quantitative manner, the content of MMA units in the polymer matrix capable of II-bonding with p-MR was varied using mixtures of polystyrene IFS) and PMMA as well as PS/PMMA random and diblock copolymers. In the mixture or diblock copolymer systems, the diffusion behavior of the probe could be well represented by a phenomenological model which assumes the additivity of the diffusional activation barriers due to hydrodynamic interaction and II-bonding interaction. On the other hand, we observed far more effective I-I-bonding in random copolymers than in mixtures or in block copolymers. The diffusivity of p-MR in a solution of random copolymers with MMA content of 40% or higher was found to be similar to pure PMMA. This peculiar behavior of p-MR diffusion in random copolymers may reflect the difference in binding efficiency of the copolymers and in the microscopic environment for the diffusion path of p-MR.
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收藏
页码:3216 / 3219
页数:4
相关论文
共 28 条
[1]   DIFFUSION OF POLYSTYRENE LATEX SPHERES IN POLYMER-SOLUTIONS STUDIED BY DYNAMIC LIGHT-SCATTERING [J].
BROWN, W ;
RYMDEN, R .
MACROMOLECULES, 1986, 19 (12) :2942-2952
[2]   DIFFUSION OF DEXTRAN IN AQUEOUS (HYDROXYPROPYL)CELLULOSE [J].
BU, Z ;
RUSSO, PS .
MACROMOLECULES, 1994, 27 (05) :1187-1194
[3]   DIFFUSION THROUGH COARSE MESHES [J].
CHANG, T ;
KIM, HD ;
YU, H .
MACROMOLECULES, 1987, 20 (10) :2629-2631
[4]   DIFFUSION OF BROWNIAN SPHERES IN SEMIDILUTE POLYMER-SOLUTIONS [J].
CUKIER, RI .
MACROMOLECULES, 1984, 17 (02) :252-255
[5]   DYNAMICS OF ENTANGLED POLYMER-SOLUTIONS .2. INCLUSION OF HYDRODYNAMIC INTERACTIONS [J].
DEGENNES, PG .
MACROMOLECULES, 1976, 9 (04) :594-598
[6]   SELF-DIFFUSION AND PROBE DIFFUSION IN DILUTE AND SEMIDILUTE AQUEOUS-SOLUTIONS OF DEXTRAN [J].
FURUKAWA, R ;
ARAUZLARA, JL ;
WARE, BR .
MACROMOLECULES, 1991, 24 (02) :599-605
[7]   THE INTRINSIC VISCOSITIES AND DIFFUSION CONSTANTS OF FLEXIBLE MACROMOLECULES IN SOLUTION [J].
KIRKWOOD, JG ;
RISEMAN, J .
JOURNAL OF CHEMICAL PHYSICS, 1948, 16 (06) :565-573
[8]   PROBE MOLECULE DIFFUSION IN POLYMER-SOLUTIONS [J].
LANDRY, MR ;
GU, QJ ;
YU, H .
MACROMOLECULES, 1988, 21 (04) :1158-1165
[9]  
LEE J, 1991, B KOR CHEM SOC, V12, P569
[10]   POLYMER PROBE INTERACTIONS IN FORCED RAYLEIGH-SCATTERING MEASUREMENTS OF PROBE DIFFUSION IN POLYVINYL ACETATE) SOLUTIONS [J].
LEE, JA ;
LODGE, TP .
JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (22) :5546-5548