Yang Chengduan, Wu Qianni, Zhong Luyu, Lyu Chenglin, He Gen, Yang Cheng, Li Xiangling, Huang Xinshuo, Hu Ning, Chen Meiwan, Hang Tian, Xie Xi
The First Affiliated Hospital of Sun Yat-Sen University; School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou, China; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau.
State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, China.
J Colloid Interface Sci. 2021 May;589:327-335. doi: 10.1016/j.jcis.2021.01.014. Epub 2021 Jan 9.
Liquid food containers commonly suffer from inevitable contamination and even biofilm formation due to the adhesion of food residuals or saliva, which requires detergents to clean. Although previously reported superhydrophobic and omniphobic coatings can resist the adhesion of liquids, the requirements of specific nanostructures or infused lubricants limit their applications in food containers. Here, by grafting smooth glass containers with "liquid like" polydimethylsiloxane brushes, we developed a unique approach for preparing a slippery coating that could exhibit highly robust repellency to various liquid foods. The coating was highly transparent and did not induce a significant alteration of the smooth surface. The "liquid like" coating could effectively prevent the adhesion of various liquid foods and inhibit the formation of bacterial biofilms, without the use of detergents for cleaning. Moreover, this coating could resist mechanical damage from friction, and displayed high biocompatibility with biological cells. The slipperiness, smoothness, robustness and biocompatibility of the "liquid like" coating was highly beneficial to practical applications as self-cleaning glass container, which has been challenging to achieve by conventional superhydrophobic or omniphobic coatings. Our study introduced a versatile strategy to functionalize biocompatible surfaces for food containers which reduced the contamination of residues and the use of detergents, and may be beneficial to human and environmental health.
液体食品容器通常会因食物残渣或唾液的附着而遭受不可避免的污染，甚至形成生物膜，这就需要使用洗涤剂进行清洁。尽管先前报道的超疏水和超疏油涂层能够抵抗液体的附着，但特定纳米结构或注入润滑剂的要求限制了它们在食品容器中的应用。在此，通过在光滑的玻璃容器上接枝“类液体”聚二甲基硅氧烷刷，我们开发了一种独特的方法来制备一种光滑涂层，该涂层对各种液体食品具有高度强大的排斥性。该涂层具有高度透明性，且不会引起光滑表面的显著改变。这种“类液体”涂层能够有效防止各种液体食品的附着，并抑制细菌生物膜的形成，无需使用洗涤剂进行清洁。此外，该涂层能够抵抗摩擦造成的机械损伤，并与生物细胞表现出高度的生物相容性。“类液体”涂层的光滑性、平滑性、坚固性和生物相容性对作为自清洁玻璃容器的实际应用非常有利，而这是传统超疏水或超疏油涂层难以实现的。我们的研究引入了一种通用策略，用于对食品容器的生物相容性表面进行功能化，减少了残留物的污染和洗涤剂的使用，可能有利于人类和环境健康。
