1994 Fiscal Year Final Research Report Summary

Formation Mechanism of Polyelectrolytes/Surfactant Complexes and their Structure Analysis.

Research Project

Project/Area Number	05453148
Research Category	Grant-in-Aid for General Scientific Research (B)
Allocation Type	Single-year Grants
Research Field	高分子構造・物性(含繊維)
Research Institution	MIE UNIVERSITY
Principal Investigator	KATO Tadaya (Mie Univ., Fac.Eng., Prof), 工学部, 教授 (80023133)
Project Period (FY)	1993 – 1994
Keywords	POLYELECTROLYTES / SURFACTANT COMPLEXES / COOPERATIVITY / MOBILITY / CAPILALY ELECTROPHORESIS / COMPOSITION DISTRIBUTION / TWO PEAKS DISTRIBUTION / WAVE LENGTH SCANNING
Research Abstract	Binding of surfactants to polyelectrolytes was measured by electrophoretic light scattering method to investigated the cooperativities of selective ion binding. Bimodal distributions were observed in the electrophoretic spectra. The peak with small electrophoretic mobility was assigned to the complexes with highly ion binding species and also the peak with high mobility was to that with low binding species. These results coincided with the cooperative experiment of potentiometric titrations. The difference of chain flexibilities for polelectrolytes reflected the behaviors for potentiometric titration. The capillary electrophoretic method was apllied to analyzed bimodal distribution of the complexes. These results may be explained using the theory for cooperativity predicted by Hill and a computer simulation based on one kind of Zimm-Bragg theory.