期刊
CELLULOSE
卷 21, 期 1, 页码 357-366出版社
SPRINGER
DOI: 10.1007/s10570-013-0160-8
关键词
Paper; Superhydrophobic; Cellulose; Stearoyl ester; Thermo-responsive
资金
- LOEWE-Cluster Soft Control
Hydrophilic paper was rendered with hydrophobic and superhydrophobic property after the treatment with solutions and nanoparticles of cellulose stearoyl ester (CSE), respectively. Cellulose stearoyl ester with a degree of substitution of 2.99 was synthesized from cellulose using stearoyl chloride. By dip-coating paper in CSE solution of at least 3 mg/ml in toluene, paper became hydrophobic with stable water contact angles of more than 120A degrees. After further spray-coating using CSE nanoparticles that were prepared from CSE solution via nanoprecipitation, paper surface became superhydrophobic with water contact angles of larger than 150A degrees. These superhydrophobic surfaces also exhibited self-cleaning character. Furthermore, the superhydrophobic paper surfaces showed a temperature-responsive character and could be turned hydrophobic after a heat-treatment at 70 A degrees C for 5 min.
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