著者

宮本 栞 鶴田 貴子

出版者

広島大学

雑誌

広島大学大学院教育学研究科紀要. 第二部, 文化教育開発関連領域 (ISSN:13465554)

巻号頁・発行日

vol.52, pp.295-299, 2004-03-28

---

The detergency, that is the effect on removal of particle soil, on soiling prevention and on deodorization etc., of the electrolyzed water was compared with that of the pure water. The electrolyzed water, i.e. the alkaline ion liquid and the acid ion liquid, was produced using an electricity resolution production device. The wet artificially soiled cloths were washed at 40? in each liquid for 10 minutes by a Terg-O-tometer. Sodium dodecyl sulfate (SDS) was used as detergent. The removal efficiency of carbon black was demanded by applying an expression of Kubelka-Munk on the basis of the surface reflection rates of the test cloths. The soiling rates of the test pieces of white polyester were calculated on the surface reflection rates after they were washed with the wet artificially soiled cloths. The smoke of a cigarette (tar 12 mg, nicotine 1.0 mg) was absorbed by the test cloths of wool muslin in a glass container sealed up for 24 hours, and they were washed only with water afterwards. The stench of the specimens was measured with a smell meter, and the deodorant efficiency of the stench was calculated afterwards. The detergency was all good in order of the alkaline ion liquid, the pure water, the acid ion liquid. The property of dispersing solid particles of each liquid was dependent on the ingredients included in each liquid, the pH of the liquid and the hardness of water. The power of dispersing particles of the alkaline ion liquid was the biggest in three kinds of liquids used.

著者

宮本 栞

出版者

広島大学大学院教育学研究科

雑誌

広島大学大学院教育学研究科紀要 第二部 文化教育開発関連領域 (ISSN:13465554)

巻号頁・発行日

no.55, pp.343-349, 2006

---

The detergency of the alkaline ionized liquid of pH 9.6 was compared with that of the ion exchanged water (pH 5.8) and the acid ionized liquid (pH 2.9) by applying DLVO theory. Polystyrene latex particle and sodium dodecyl sulfate (SDS) were considered to the fiber and the solid particle charged with negative ions in water respectively. It was supposed that the potential barriers of adsorption and desorption corresponded to the adsorption and desorption rate constants (ka, kd). The two constants (ka, kd) of SDS to and from polystyrene latex were determined through the stopped-flow technique. The adsorption rate constants were 10.6×104, 3.55×104 and 8.44×104 mol-1dm3s-1, the desorption rate constants were 8.43, 8.62 and 9.29 s-1, the values of ka/kd were 1.26×104, 4.12×103 and 9.09×103 mol-1dm3 and the standard free energy change (ΔG) was -7.84, -7.19 and -7.65 kcal mol-1 for the ion exchanged water, the alkaline ionized liquid and the acid ionized liquid respectively. The adsorption rate constants were dependent upon the water hardness of the used liquids and the desorption rate constants were dependent upon ζ-potential of polystyrene latex particles in the liquids. The smaller the value of ka/kd was, the more the washing condition was effective. The detergency of the alkaline ionized liquid was determined by comparison with ΔG of the other liquids. It was made clear that the detergency of the alkaline ionized liquid was 1.09 times of the ion exchanged water and 1.07 times of the acid ionized liquid.