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

Duy Le; Suwadee Kongparakul; Chanatip Samart; Patchiya Phanthong; Surachai Karnjanakom; Abuliti Abudula; Guoqing Guan

doi:10.1016/j.carbpol.2016.07.112

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

Carbohydr Polym. 2016 Nov 20:153:266-274. doi: 10.1016/j.carbpol.2016.07.112. Epub 2016 Jul 28.

Authors

Duy Le¹, Suwadee Kongparakul¹, Chanatip Samart¹, Patchiya Phanthong², Surachai Karnjanakom², Abuliti Abudula², Guoqing Guan³

Affiliations

¹ Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani 12120, Thailand.
² Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan.
³ Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, Aomori 030-0813, Japan. Electronic address: guan@hirosaki-u.ac.jp.

PMID: 27561496
DOI: 10.1016/j.carbpol.2016.07.112

Abstract

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.

Keywords: Hydrophobicity; Nanocellulose film; Silica nanoparticles; Stability; Superoleophilicity; Water contact angle.