Preparation, characterization, and properties of fluorine-free superhydrophobic paper based on layer-by-layer assembly

Jin Yang; Hui Li; Tianqing Lan; Lincai Peng; Rongqi Cui; Hao Yang

doi:10.1016/j.carbpol.2017.09.040

Preparation, characterization, and properties of fluorine-free superhydrophobic paper based on layer-by-layer assembly

Carbohydr Polym. 2017 Dec 15:178:228-237. doi: 10.1016/j.carbpol.2017.09.040. Epub 2017 Sep 13.

Authors

Jin Yang¹, Hui Li², Tianqing Lan¹, Lincai Peng³, Rongqi Cui¹, Hao Yang⁴

Affiliations

¹ Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China.
² Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China. Electronic address: lihuiscut@126.com.
³ Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China.
⁴ School of Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430060, China.

PMID: 29050589
DOI: 10.1016/j.carbpol.2017.09.040

Abstract

A fluorine-free superhydrophobic paper was prepared by a facile method involving layer-by-layer deposition of cationic starch and sodium alginate together with subsequent modification of trichloromethylsilane has been reported in this article. The surface chemical compositions, potentials and surface morphologies of the modified papers were characterized, respectively. The wetting abilities and physical strength properties of the modified papers were investigated. After 4-time deposition of cationic starch/sodium alginate bilayer followed by trichloromethylsilane treatment, the water contact angle of modified paper reached up to 161.7°, and the tensile strength increased by 6.8% in comparison to that of pristine paper. This as-prepared superhydrophobic paper not only showed low bacterial adhesion property, self-cleaning behavior, water repellency, as well as high durability against deformation, chemical and time, but also kept a high strength property under high relative humidity condition, which might has a great application potential in the liquid paper packaging industry.

Keywords: Alginate; Cationic starch; Layer-by-layer; Moisture resistance; Superhydrophobic paper.