Study for Cleaning and Washing using Mechanical and Chemical Action caused by Ultrasonic Cavitation

2015 Fiscal Year Final Research Report

• Project/Area Number: 24500933
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: General human life sciences
• Research Institution: Osaka Sangyo University
• Principal Investigator: Tagawa Yumiko 大阪産業大学, 経営学部, 教授 (40207808)
• Co-Investigator(Kenkyū-buntansha): GOTOH Keiko 奈良女子大学, 生活環境学部, 教授 (30243356)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 超音波洗浄 / キャビテーション / 周波数 / 照射方向 / 洗浄ムラ / 洗浄性評価 / 画像解析

Outline of Final Research Achievements

The detergency of polyethylene terephthalate films and polyester fabrics in an aqueous solution was investigated using a commercial ultrasonic cleaning apparatus operating at 38 or 130 kHz. The model contaminants, carbon black (CB) and oleic acid (OA), were used. It was found that the detergency at 38 kHz was higher than that at 130 kHz for the same electric power. The particles smaller than 0.6μm were easily removed at 130 kHz. The detergency of fabrics was found to enhance in the presence of NaOH and SDS. The effect of the exposure direction of ultrasonic wave and uneven washing was investigated using a self-developed ultrasonic cleaning apparatus operating at 38 kHz. The results showed that the detergency of film and fabric irradiated from bottom of wash bath was slightly high and the uneven washing was related with detergency.

Free Research Field

生活科学一般，被服科学，被服管理，洗浄