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- 2019
高疏水氟化SiO2/聚醚砜复合膜的制备与表征
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Abstract:
以正硅酸乙酯（TEOS）和全氟癸基三乙氧基硅烷（PFDTES）为混合Si源，以聚醚砜（PES）为基膜材料，通过真空过滤和热处理工艺制备单侧高疏水氟化SiO2/PES（fSiO2/PES）复合膜。通过ATR-FTIR、XPS、TEM和FESEM等对单侧高疏水fSiO2/PES复合膜进行表征，考察PFDTES修饰量和热处理条件对膜疏水性能的影响，并评价fSiO2/PES复合膜的疏水稳定性能。结果表明，当PFDTES：TEOS的质量比为3时，高疏水fSiO2/PES复合膜的疏水性能较好（接触角为131.5°）；当热处理温度为100℃，热处理时间为4 h时，高疏水fSiO2/PES复合膜表面的接触角为138.9°，且其对不同pH值的溶液都有良好的疏水性能。 A single-side highhydrophobic fluorinated silica/poly(ether sulfone) (fSiO2/PES) composite membrane was prepared by vacuum-filtrating with tetraethoxysilian (TEOS) and perfluorodecyltriethoxysilane (PFDTES) as the silica source. The chemical component and morphology of the single-side highhydrophobic fSiO2/PES composite membrane was examined by ATR-FTIR, XPS, TEM and FESEM, individually. The effects of PFDTES modification amount and the heat treatment condition on membrane hydrophobicity were investigated, and the hydrophobic stability of fSiO2/PES composite membrane was evaluated. The results show that the water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 131.5° when the mass ratio of PFDTES:TEOS is 3. The water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 138.9°, as the heat treatment temperature is 100℃ and the heat treatment time is 4 h. In addition, the single-side highhydrophobic fSiO2/PES composite membrane exhibits excellent hydrophobic stable performance. 国家自然科学青年基金（51503146）；河北省科技计划项目（13273707；16211243；18271238）；河北省唐山市科技计划项目（14130238B；18130221a）；唐山学院项目（hhx2018003
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