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The effect of temperature on thermoosmosis

1986; Elsevier BV; Volume: 28; Issue: 2 Linguagem: Inglês

10.1016/s0376-7388(00)82209-7

1873-3123

Masayasu Tasaka, Hideyuki Futamura,

Electrical and Bioimpedance Tomography

Abstract Thermoosmosis through a collodion membrane (cm) and a poly(styrenesulfonic acid)—collodion interpolymer membrane (im) was observed, and changes in the mean temperature of the bulk solutions on both sides of the membrane and the KCl molality were recorded. The absolute value of the thermoosmotic coefficient, D , increased with increasing mean temperature. This was due to an increase in the fluidity of the KCl solutions. In all cases the direction of thermoosmosis was from the cold side to the hot side. For the charged membrane (im), the molality dependence of D was larger than that for the collodion membrane (cm).