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Sol ‐ gel transition in biopolymers
Author(s) -
Axelos M. A. V.,
Kolb M.
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910450106
Subject(s) - rheology , scaling , elasticity (physics) , percolation theory , thermodynamics , materials science , percolation (cognitive psychology) , scalar (mathematics) , dynamic mechanical analysis , critical exponent , modulus , elastic modulus , condensed matter physics , statistical physics , physics , mathematics , conductivity , polymer , composite material , geometry , quantum mechanics , neuroscience , biology
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, Δ = 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.