Study on the application of ultrasonic wave in the removal of microbiofouling on PMMA surface

IF 1.6 Q4 ENGINEERING, BIOMEDICAL Biosurface and Biotribology Pub Date : 2021-07-06 DOI:10.1049/bsb2.12014
Liang Zheng, Yufan Zeng, Yuefan Li, Jing Zheng
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引用次数: 1

Abstract

Ultrasound has been used for antifouling on the surface of medical devices or food utensils, but it is rarely applied in marine anti-biofouling on underwater instruments. To understand whether ultrasonic antifouling is suitable for underwater optical windows, the effect of ultrasonic conditions including frequency, power and duration on the removal of microbiofouling on the surface of polymethyl methacrylate (PMMA), a type of common optical material, was investigated in this study by three-factor and three-level orthogonal experiments. Before and after the ultrasonic treatment, both surface morphology and fouling degree of PMMA samples immersed in Escherichia coli suspension and seawater were characterized and quantified using laser scanning microscope. The results showed that ultrasonic treatment can effectively remove microfouling from the PMMA surface under suitable conditions. Ultrasonic technology has a great potential for the control of microfouling on the marine optical instruments. When compared with power and duration, ultrasonic frequency has a more significant effect on antifouling efficacy of ultrasound. It is useful for PMMA samples exposed to seawater within 2 days to conduct an antifouling treatment under the condition of an ultrasonic frequency of 20 kHz, ultrasonic power of 40 W, and ultrasonic duration of 7 min.

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超声波在PMMA表面微生物污垢去除中的应用研究
超声波已被用于医疗器械或食品器具表面的防污,但很少用于水下仪器的海洋防污。为了解超声防污是否适用于水下光学窗,本研究采用三因素三水平正交试验,考察了超声条件(频率、功率、持续时间)对常见光学材料聚甲基丙烯酸甲酯(PMMA)表面微生物污垢去除的影响。采用激光扫描显微镜对超声处理前后的PMMA样品在大肠杆菌悬浮液和海水中的表面形貌和污染程度进行表征和定量。结果表明,在合适的条件下,超声处理可以有效去除PMMA表面的微垢。超声技术在海洋光学仪器的微污染控制方面具有很大的潜力。与功率和持续时间相比,超声波频率对超声波防污效果的影响更为显著。在超声波频率为20 kHz,超声波功率为40 W,超声波持续时间为7 min的条件下,可对暴露在海水中2天内的PMMA样品进行防污处理。
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来源期刊
Biosurface and Biotribology
Biosurface and Biotribology Engineering-Mechanical Engineering
CiteScore
1.70
自引率
0.00%
发文量
27
审稿时长
11 weeks
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