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Interaction of Maleic Acid Copolymers with Collagen
Author(s) -
AnghelescuDogaru Adina Graziella,
Chitanu Gabrielle Charlotte,
Tenhu Heikki
Publication year - 2006
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.200690111
Subject(s) - maleic acid , copolymer , polyelectrolyte , conductometry , chromium , potentiometric titration , acrylic acid , polymer chemistry , coacervate , chemistry , titration , maleic anhydride , materials science , ion , inorganic chemistry , organic chemistry , polymer , chromatography
One of the present trends to increase the efficiency of the chrome tanning process is the use of chemicals which change the affinity and induce a better binding of the chromium ions in the hides. Recently, some anionic polyelectrolytes based on poly(acrylic acid) or maleic acid copolymers were developed as additives in the chrome tanning. The effect of polyelectrolytes could be explained by their interaction with the collagen from hide. In our work four maleic acid copolymer/collagen systems were investigated by turbidimetric, conductometric and potentiometric titrations. The interaction between the two macromolecular compounds was clearly evidenced, and its dependence on the chemical structure of the maleic acid copolymer and on the amount of added chromium ions was studied. Homogeneous systems or turbid dispersions were observed depending on the hydrophilic or hydrophobic character of the maleic copolymer, on the [CH]/[MP] ratio, and on the concentration of the chromium ions.