SOL-GEL TRANSITION IN BIOPOLYMERS

被引：5

作者：

AXELOS, MAV ^{[1
]}

KOLB, M ^{[1
]}

机构：

[1] ECOLE NORM SUPER,CHIM THEOR LAB,LYONS,FRANCE

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1991年 / 45卷

关键词：

D O I：

10.1002/masy.19910450106

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Rheological measurements have been performed on pectin biopolymers close to the sol-gel transition. From these measurements scaling exponents were determined independently for the viscosity, s = 0.82(5), for the elastic modulus, t = 1.93(8), for the frequency-dependent modulus, DELTA = 0.71(2), and for the relaxation times below and above the transition, vz = 2.67(12) and vz' = 2.65(9). The exponents satisfy the scaling relations predicted by the theory and their numerical values agree with those from scalar elasticity percolation.

引用

页码：23 / 30

页数：8

共 25 条

[1] MECHANICAL MEASUREMENTS IN THE REACTION BATH DURING THE POLYCONDENSATION REACTION, NEAR THE GELATION THRESHOLD [J].

ADAM, M ;

DELSANTI, M ;

DURAND, D .

MACROMOLECULES, 1985, 18 (11) :2285-2290

[2] MECHANICAL-PROPERTIES NEAR GELATION THRESHOLD, COMPARISON WITH CLASSICAL AND 3D PERCOLATION THEORIES [J].

ADAM, M ;

DELSANTI, M ;

DURAND, D ;

HILD, G ;

MUNCH, JP .

PURE AND APPLIED CHEMISTRY, 1981, 53 (08) :1489-1494

[3] SOL-GEL TRANSITION OF HYDROLYZED POLYACRYLAMIDE + CHROMIUM-III - RHEOLOGICAL BEHAVIOR VERSUS CROSS-LINK CONCENTRATION [J].

ALLAIN, C ;

SALOME, L .

MACROMOLECULES, 1987, 20 (11) :2957-2958

[4]

[Anonymous], 1979, SCALING CONCEPTS POL

[5] CROSSLINKED BIOPOLYMERS - EXPERIMENTAL-EVIDENCE FOR SCALAR PERCOLATION THEORY [J].

AXELOS, MAV ;

KOLB, M .

PHYSICAL REVIEW LETTERS, 1990, 64 (12) :1457-1460

[6] STRUCTURE OF CITRUS PECTINS AND VISCOMETRIC STUDY OF THEIR SOLUTION PROPERTIES [J].

AXELOS, MAV ;

THIBAULT, JF ;

LEFEBVRE, J .

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 1989, 11 (03) :186-191

[7] LINEAR VISCOELASTICITY AT THE GEL POINT OF A CROSS-LINKING PDMS WITH IMBALANCED STOICHIOMETRY [J].

CHAMBON, F ;

WINTER, HH .

JOURNAL OF RHEOLOGY, 1987, 31 (08) :683-697

[8]

COLBY RH, 1987, FRACTAL ASPECTS MATE

[9]

DAOUD M, IN PRESS J PHYS C

[10]

DEGENNES PG, 1976, J PHYS LETT-PARIS, V37, pL1, DOI 10.1051/jphyslet:019760037010100

← 1 2 3 →