Journal
CARBOHYDRATE POLYMERS
Volume 153, Issue -, Pages 266-274Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.07.112
Keywords
Hydrophobicity; Nanocellulose film; Silica nanoparticles; Superoleophilicity; Water contact angle; Stability
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Funding
- Faculty of Science and Technology, Thammasat University Research Fund under Outbound Research Scholar, National Research University Project of Thailand and Aomori City Government, Japan
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan
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Hydrophobic nanocellulose-silica film was successfully prepared by a facile one-pot method using tetraethoxysilane (TEOS) and dodecyl triethoxylsilane (DTES). Morphological characterization of the hydrophobic nanocellulose-silica (NC-SiO2-DTES) film showed well self-assembled DTES modified silica spherical nanoparticles with the particle sizes in the range of 88-126 nm over the nanocellulose film. The hydrophobicity of the NC-SiO2-DTES film was achieved owing to the improvement of roughness of the nanocellulose film by coating dodecyl- terminated silica nanoparticles. An increase in DTES loading amount and reaction time increased the hydrophobicity of the film, and the optimum condition for NC-SiO2-DTES film preparation was achieved at DTES/TEOS molar ratio of 2.0 for 8 h reaction time. Besides, the NC-SiO2-DTES film performed superoleophilic property with octane and hexadecane contact angles of 0. It also showed an excellent hydrophobic property over all pH values ranged from 1 to 14. (C) 2016 Elsevier Ltd. All rights reserved.
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