受荷叶自清洁效应启发的手术服表面改性与防污染性能

doi:10.11944/j.issn.1000-0518.2019.01.180323

摘要/Abstract

摘要：

为了提升当前商用手术服在特殊医疗手术环境下屏蔽携带病原体的血液或体液的性能,降低医护人员与患者因接触携带病原体的血液或体液而交叉感染的风险,受荷叶自清洁效应的启发,本文采用表面双疏处理技术,用含氟双疏处理液对商用手术服表面改性,来提升当前商用手术服在特殊医疗手术环境下对污染物(水、油、血液) 的屏蔽性能。扫描电子显微镜和元素分析表征确定了含氟聚合物被成功固定在手术服表面。对改性后的手术服的防水、防油、防血液污染性能检测发现:表面双疏改性可将手术服表面水接触角提升到(138±2)°,水滚动角降低至4.0°,表明其防水能力明显提升;改性后的手术服表面具有对油滴保持至少60 s不浸润,血液液滴在倾斜20.6°的改性手术服表面可快速滚落的特性,同时保持良好的透气性能(7.90 g/(min·m²))。

关键词: 手术服, 表面改性, 抗污染

Abstract:

To improve medical protective performance of current commercial surgical clothing under special medical operating conditions and decrease the cross-infection risk of medical personnel and patient due to contacting blood and body fluids carrying pathogens. Inspired by self-cleaning effect of lotus leaf, superhydrophobic/superoleophobic technology is used to modify the commercial surgical clothing surface with fluorine-containing amphiphobic solution for improving its anti-fouling(waterproof, oil-proof, and anti-blood) performance. Scanning electron microscopy and element analysis characterizations verify that the fluorine-containing polymer is fixed on the surgical clothing surface. The waterproof, oil-proof, and anti-blood pollution performances of the modified surgical clothing are conducted, and the results show that the water contact angle of modified surgical clothing surface reaches to (138±2)°, meanwhile the roll angle decreases to 4.0°, indicating the obvious improvement of waterproof performance. Additionally, modified surgical clothing is hard to be wetted by oil droplet for at least 60 seconds. And it allows blood droplet quickly rolling off modified surgical clothing surface by tilting the surface to 20.6° showing low adhesion characteristic to blood droplet. Meanwhile, it keeps excellent water vapor permeability(7.90 g/(min·m²)).

Key words: surgical clothing, surface modification, anti-pollution

张哲烽, 黄小东, 闻利平. 受荷叶自清洁效应启发的手术服表面改性与防污染性能[J]. 应用化学, 2019, 36(1): 34-40.

ZHANG Zhefeng, HUANG Xiaodong, WEN Liping. Inspired by Self-cleaning Effect of Lotus Leaf: Surface Modification and Antifouling Performance with Surgical Clothing[J]. Chinese Journal of Applied Chemistry, 2019, 36(1): 34-40.

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