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Moscow University Chemistry Bulletin Vol. 42, No. 1, P. 49 (2001)
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Amelina E. A., Videnskii I. V., Ivanova N. I., Parfionova A. M., Pelekh V. V., Altukhova N. V., Shchukin E. D.

Interaction of Individual Fibers Modified by Surface Adsorption.

Abstract

The coeFFicients oF Friction m and adhesion Forces (contact strength) p (under conditions oF shear and rupture accordingly) in the point contacts between individual Fibers oF cellulose, viscose and acetylcellulose were measured in the aqueous solutions oF cationic surFactants - cetyltrimethylammonium bromide (CTAB) and tetrabuthylammonium iodide (TBAI) - and cationic polyelectrolyte - polyethyleneimine (PEI). The molecular component oF Friction Forces was analyzed, Free energy oF interaction U(mJ/m2) was evaluated For the Fibers oF acetylcellulose. Comparison on these data with the data oF z-potential and surFactant adsorption measurements was carried out.
The character and degree oF change oF Fiber interaction parameters under surFactant action, concentration region according with extreme values parameters are associated with surFactant ability to act on surFace charge oF Fibers and to provide surFace hydrophobization and hydrophilization depending on adsorption value.
Moscow University Chemistry Bulletin.
2001, Vol. 42, No. 1, P. 49
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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