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Structural properties of partially charged poly (acrylic acid) gels as probed by light scattering
Author(s) -
Candau Sauveur J.,
Skouri Rachid,
Schosseler François,
Munch JeanPierre
Publication year - 1994
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19940830117
Subject(s) - scattering , light scattering , materials science , static light scattering , dynamic light scattering , swelling , acrylic acid , polymer chemistry , ionization , analytical chemistry (journal) , optics , chemical physics , molecular physics , chemistry , polymer , composite material , ion , chromatography , physics , organic chemistry , nanotechnology , copolymer , nanoparticle
We report results of static light scattering for partially charged gels at different swelling degrees and different ionization degrees. We measured both the ensemble‐average and the rms fluctuations of the scattered intensity by scanning through various positions in the gel. It is shown that the dynamic concentration fluctuations are, to the first order, the same as in semi‐dilute solutions at the same concentration. The excess of scattering of the gel with respect to the solutions arises mainly from frozen‐in scattering domains with spatial extent less than ∼ 300 Å.