Preparing hydrophobic nanocellulose-silica film by a facile one-pot method

• DOI: 10.1016/j.carbpol.2016.07.112
• Publication Date: 2016-07-29T22:38:57Z
• Authors: Duy Le; Suwadee Kongparakul; Chanatip Samart; Patchiya Phanthong; Surachai Karnjanakom; Abuliti Abudula; Guoqing Guan
• Keywords: 01 natural sciences; 0104 chemical sciences

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 88-126nm 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 8h 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.