Mengting Yu, Yujing Sun, Na Ji, Lei Dai, Man Li, Xuyan Dong, Liu Xiong, Qingjie Sun
{"title":"Superhydrophobic chitosan films via SiO2/PDMS coating for reducing liquid food residue","authors":"Mengting Yu, Yujing Sun, Na Ji, Lei Dai, Man Li, Xuyan Dong, Liu Xiong, Qingjie Sun","doi":"10.1016/j.indcrop.2025.122003","DOIUrl":null,"url":null,"abstract":"Superhydrophobic coatings have gained significant interest due to their ability to prevent liquid foods like juice and yogurt from adhering to the inner surfaces of containers, thus reducing waste. Superhydrophobic coatings limit its application due to its toxicity, degradability and other reasons. In this work, chitosan sodium phytate films were deposited on glass plates by layer-by-layer self-assembly (LBL), then SiO<sub>2</sub> nanoparticles were introduced to construct micro/nano-structures, and finally, surface modification with polydimethylsiloxane (PDMS) was carried out to prepare superhydrophobic films. The surface of the superhydrophobic film had a micro/nano-scale structure similar to that of lotus leaves. The water contact angle (WCA) of superhydrophobic films reached 153°, and sliding contact angle (SA) was 5°. Owing to this unique structure, different liquid food droplets could roll off freely in a near spherical form on the chitosan phytate film surfaces, effectively reducing residue during container pouring. The outcomes of this study are expected to expand the potential applications of superhydrophobic chitosan films in liquid food anti-adhesion.","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"93 1","pages":""},"PeriodicalIF":6.2000,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial Crops and Products","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1016/j.indcrop.2025.122003","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
Superhydrophobic coatings have gained significant interest due to their ability to prevent liquid foods like juice and yogurt from adhering to the inner surfaces of containers, thus reducing waste. Superhydrophobic coatings limit its application due to its toxicity, degradability and other reasons. In this work, chitosan sodium phytate films were deposited on glass plates by layer-by-layer self-assembly (LBL), then SiO2 nanoparticles were introduced to construct micro/nano-structures, and finally, surface modification with polydimethylsiloxane (PDMS) was carried out to prepare superhydrophobic films. The surface of the superhydrophobic film had a micro/nano-scale structure similar to that of lotus leaves. The water contact angle (WCA) of superhydrophobic films reached 153°, and sliding contact angle (SA) was 5°. Owing to this unique structure, different liquid food droplets could roll off freely in a near spherical form on the chitosan phytate film surfaces, effectively reducing residue during container pouring. The outcomes of this study are expected to expand the potential applications of superhydrophobic chitosan films in liquid food anti-adhesion.
期刊介绍:
Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.