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조병린(Byung-Rin Cho); 이영자(Young-Jae Lee); 이익춘(Ickhoon Lee)
Journal of the Korean Chemical Society, 1973, Volume: 17, Issue: 1Journal Article
The relative viscosities ηr of anilinium chloride solutions in a series of isopropanol-water mixtures have been determined at $20^{\circ}$, $30^{\circ}$and $40^{\circ}$, using Ubbelohde-type viscometers. The viscosity data have been interpreted in terms of viscosity A-and B-coefficients calculated from the Jones-Dole equation,${\eta}{\tau}=1+AC^{1/2}+BC$. The energy of activation for viscous flow have also been calculated according to the concept of rate processes. The results indicate that at $0.10{\sim}0.15$ mole fraction isopropanol the maximum structuredness of water gives a minimum values of viscosity A-and B-coefficients, and that anilinium chloride belongs to the borderline case in respect of the structure-making or structure-breaking effects on water. 여러 조성의 2-프로판올-물 혼합용액중의 anilinium chloride 용액의 상대점도를 $20^{\circ}$, $30^{\circ}$ 및 $40^{\circ}$에서 각각 측정하고, Jones-Dole식, ${\eta}{\tau}=1+AC^{1/2}+BC$에서 결정되는 점도 A- 및 B- 계수와, 절대반응속도 이론으로 구해지는 점성흐름의 활성화 에너지로 부터, 용매구조에 미치는 용질의 효과를 논의하였다. 2-프로판올의 몰분율이 $0.10{\sim}0.15$인 조성에서 점도 A- 및 B- 계수가 최소인 현상은 이 조성에서 물의 구조가 가장 강화되기 때문인 것으로 해석하였다. 또 anilinium chloride는 물에 대한 structure-maker 또는 structure-breaker의 입장에서 borderline case에 속한다고 결론지을 수 있었다.
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