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曺外淑,柳德桓 啓明大學校 生活科學硏究所 1987 科學論集 Vol.13 No.-
As observing surface tension according to the change of temperature and concentration of detergents, considerated washing efficiency according to the change of temperature and concentration. From the preceding paragraphs, acquired the results as follows. 1. The concentration is getting higher and the surface tension of defergent lower. But, it marked minimum at 0.2 to 0.3%, and the serial sequence of surface tension is as follows, synthetic soap detergent. 2. In the correlation between surface tension and temperature is getting higher, and the surface tension lower. There is a big gap according to temperature in the low concentration, but, no gap according to temperature in the concentr ation of 0.5% and above. 3. In the relation between washing efficiency rate concentration, most of detergents represent high washing efficiency at 0.2% to 0.3% concentration of detergent, didn't represent the increase of washing efficiency at 0.5% and above. And, serial sequence of washing efficiency rate is follows enzyme〉soap〉synthetic detergent. 4. In the relation between washing efficiency rate and temperature, soap represent the continous increase of washing efficiency rate according to the continous increase of temperature. but, synthetic detergent and enzyme didn't represent the increase at 30℃ to and adove. 5. The surface tension is getting lower and the washing efficiency higher. From both sides, relative fomula is as follows y=-1.15χ+46.