Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7782013 | Carbohydrate Polymers | 2018 | 19 Pages |
Abstract
Superhydrophobic surfaces have attracted great attention due to their attractive properties. Biopolymer-based low-cost and environmentally-friendly superhydrophobic coatings with easy-to-perform fabrication methods are always desirable. Herein, we report superhydrophobic surfaces using a one-step spray-coating of chitosan-based nanoparticles. The particles were easily prepared by a nanoprecipitation strategy using synthesized organosoluble chitosan stearoyl ester (CSSE). The resulting particles had an average size of 165 â¼ 235â¯nm depending on the applied concentration. Subsequently, spray-coating of such particles onto silicon wafer generated a surface with a water contact angle of 155â¯Â±â¯1°. SEM and AFM images exhibited a nano/microscaled roughness appeared on the coated surface. The superhydrophobic surfaces showed a stable superhydrophobic performance even after storage for 15â¯days, pH stability between pH 1 to pH 11 and thermal stability until a temperature no more than 50â¯Â°C. These properties would broaden the application fields of superhydrophobic surfaces as well as the chitosan itself.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Shuangfei Wang, Jiulong Sha, Wei Wang, Chengrong Qin, Wei Li, Caiqin Qin,