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Enhancement of inhomogeneities in gels upon swelling and stretching
Author(s) -
Bastide Jacques,
Mendes Eduardo,
Boué François,
Buzier Martine,
Lindner Peter
Publication year - 1990
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.19900400110
Subject(s) - swelling , isotropy , anisotropy , materials science , neutron scattering , percolation (cognitive psychology) , polymer , percolation threshold , scattering , percolation theory , composite material , chemistry , optics , physics , conductivity , quantum mechanics , neuroscience , biology , electrical resistivity and conductivity
In this paper, it is shown how a percolation process can be used to describe the inhomogeneities of polymer concentration, appearing in gels prepared by random crosslinking of a semi‐dilute solution, and how they are modified by swelling or stretching of the network. Neutron scattering experimental data are compared to the predictions of this model in the isotropic and anisotropic cases. A good agreement is found. In particular, “abnormal” butterfly patterns in the iso‐intensity curves have been detected, as expected from the model.