Superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes

doi:10.1016/j.jcis.2018.01.034

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes
	Zhao, Xia 1; Hu, Tao 1,2; Zhang, Junping 2
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2018-04
卷号	515 页码:255-263
关键词	Superhydrophobicity Self-cleaning Wettability Anti-adhesion Contact angle
ISSN号	0021-9797
DOI	10.1016/j.jcis.2018.01.034
英文摘要	The applications of superhydrophobic coatings in daily life are receiving increasing attention. Here, we report a general approach for preparing superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes. The coatings are prepared by spray-coating the homogeneous wax suspensions in ethanol followed by annealing at 40 degrees C. The wax suspensions are formed by the heating dissolution-cooling precipitation-ultrasonication process thanks to the unique solubility of the waxes in ethanol. Ultrasonication of the wax suspension is helpful to improve superhydrophobicity by reducing the size of the wax microplatelets. Annealing at 40 degrees C could enhance mechanical stability of the coatings. The coatings are superhydrophobic with a water contact angle of 158.2 degrees and a sliding angle of 7.3 degrees. The coatings are resistant to intense water jetting and immersion in corrosive aqueous solutions. In addition, the coatings show excellent anti-adhesive properties for various liquid foods including cola, honey, milk and yoghourt. Moreover, the coatings are applicable onto different substrates (e.g., glass slide, PET plate and polyethylene plate) and could be prepared using different waxes (e.g., paraffin wax, beeswax and microcrystalline wax). We believe that the wax superhydrophobic coatings could find applications in various fields such as anti-adhesion of liquid foods, fruit preservation and antibioadhesion, etc. (C) 2018 Elsevier Inc. All rights reserved.
资助项目	Talents of Innovation and Entrepreneurship Project of Lanzhou, China[2016-RC-77]
WOS研究方向	Chemistry
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000425838400027
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32723]
专题	石油化工学院
通讯作者	Zhang, Junping
作者单位	1.Lanzhou Univ Technol, Dept Chem Engn, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Clay Mineral Appl Res Gansu Prov, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xia,Hu, Tao,Zhang, Junping. Superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,515:255-263.
APA	Zhao, Xia,Hu, Tao,&Zhang, Junping.(2018).Superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes.JOURNAL OF COLLOID AND INTERFACE SCIENCE,515,255-263.
MLA	Zhao, Xia,et al."Superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes".JOURNAL OF COLLOID AND INTERFACE SCIENCE 515(2018):255-263.