Bulletin of the Graduate School of Education, Hiroshima University. Part. II, Arts and science education Issue 55
2007-03-28 発行

カチオン界面活性剤とノニオン界面活性剤混合系の洗浄性 : 粒子汚れ除去・再汚染・油脂汚れ除去・殺菌・脱臭および安全性

Detergency of Mixture of Cationic Surfactant and Nonionic Surfactant : Removal of Particle Soil, Soil Redeposition, Oily and Fatty Soil Removal, Sterilization, Deodorization and Safety
Miyamoto, Shiori
Zhang, Liangyi
The detergency of the mixture of hexadecyl trimethylammonium bromide (HTAB) and dodecyl polyoxyethylene ether (DPE) was studied using cotton and polyester fabric. The critical micell concentration of the mixture determined by surface tension method was 4×10-4 mol/dm3. Polystyrene latex particle removal and redeposition, removal of liquid paraffin and oleic acid, sterilization of staphylococcus aureus, deodorization of stench of cigarette and safety were examined through SEM observation, spectrophtometry, culture, a smell meter and a skin model. The effect of HTAB/DPE combination ratio on these six detergency indexes was investigated. The most effective mixing ratio of the mixture for detergency except oily and fatty soil removal was 90:10. When the combination ratio of HTAB was more than 90 %, the detergency reduced for reason of the increase of the surface tension of the mixture. The more DPE content was in the mixture, the more the oily and fatty soil was removed. The survival rate of the cells of the skin model was from 90 % to 100 % same as water. Therefore it was cleared that the mixture of HTAB and DPE used this study was safety.
cationic surfactant
nonionic surfactan