Superhydrophobic coatings with high repellency to daily consumed liquid foods based on food grade waxes | |
Department | 甘肃省黏土矿物应用重点实验室 |
Zhao, Xia1; Hu, Tao1,2; Zhang JP(张俊平)2; Zhang JP(张俊平) | |
The second department | 环境材料与生态化学研究发展中心 |
2018 | |
Source Publication | Journal of Colloid and Interface Science |
ISSN | 0021-9797 |
Volume | 515Pages:255-263 |
Abstract | 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 °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 °C could enhance mechanical stability of the coatings. The coatings are superhydrophobic with a water contact angle of 158.2° and a sliding angle of 7.3°. 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 anti-bioadhesion, etc. |
Keyword | Superhydrophobicity Self-cleaning Wettability Anti-adhesion Contact Angle |
Subject Area | 环境材料与生态化学 |
DOI | 10.1016/j.jcis.2018.01.034 |
Funding Organization | the National Natural Science Foundation (21667017;51503212);the ‘‘Hundred Talents Program” of the Chinese Academy of Sciences;the Funds for Creative Research Groups of Gansu, China (17JR5RA306);the Talents of Innovation and Entrepreneurship Project of Lanzhou, China (2016-RC-77) |
Indexed By | SCI |
Language | 英语 |
Funding Project | 功能复合材料研究组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/23741 |
Collection | 甘肃省黏土矿物应用研究重点实验室 环境材料与生态化学研究发展中心 |
Corresponding Author | Zhang JP(张俊平) |
Affiliation | 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 |
Recommended Citation GB/T 7714 | Zhao, Xia,Hu, Tao,Zhang JP,et al. 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 JP,&张俊平.(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. |
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1-s2.0-S002197971830(3457KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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