VISCOSITY B COEFFICIENTS FOR THE AQUEOUS SOLUTIONS OF TETRAALKYLAMMONIUM BROMIDE UNDER HIGH PRESSURE
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概要
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The viscosities of aqueous solutions of tetraalkylammonium bromide(R_4NBr, R=Me, Et, n-Pr, and n-Bu)were measured in the range of 0.1-1.0 mol kg^<-1> and 5.0-50・0 ℃ respectively up to a pressure of 375 MPa, using a high pressure rolling-ball viscometer. The activation energy for viscous flow(E_v)and Jones-Dole B coefficient were estimated. The viscosity vs.pressure minimum at 5.0 ℃ observed for pure water becomes shallow or disappears with increasing concentration of R_4NBr salt and increasing temperature. E_v for aqueous solution of Me_4NBr is lower than that of pure water in the whole concentration range under high pressure. Two types of the pressure dependence of the Jones-Dole B coefficients are given. These phenomena were interpreted based on the stand point of pressure, temperature, concentration effects for the structure of water.
- 社団法人日本材料学会の論文
- 1995-06-15
著者
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YOSHIMURA Yukihiro
Department of Applied Chemistry, National Defense Academy
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TANIGUCHI Yoshihiro
Department of Pediatrics, Fukui Red Cross Hospital
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Yoshimura Yukihiro
Department Of Applied Chemistry National Defense Academy
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Yoshimura Yukihiro
Department Of Chemistry National Defense Academy
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Sawamura Seiji
Department Of Chemistry Faculty Of Science And Engineering Ritsumeikan University
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Taniguchi Yoshihiro
Department Of Chemistry Faculty Of Science And Engineering Ritsumeikan University
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Taniguchi Yoshihiro
Department Of Applied Chemistry Faculty Of Science And Engineering Ritsumeikan University
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Yoshimura Yukihiro
Department Of Applied Biological Chemistry Graduate School Of Agriculture Kinki University
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