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疏水性Al_2O_3膜表面的化学稳定性 被引量：8

Chemical stability of hydrophobic alumina membrane surface
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摘要 采用长链烷基的硅氧烷对片式对称多孔Al2O3膜进行改性,制备疏水性Al2O3膜.考察在不同环境下疏水Al2O3膜的化学稳定性,采用接触角和红外光谱表征膜表面性质的变化.结果表明:制备的疏水膜的水接触角约为142°;在室温下的浓H2SO4和NaOH溶液中,疏水膜具有良好的稳定性,但是在120℃的浓H2SO4和80℃的NaOH溶中,疏水表面很快被破坏,转变成亲水表面;疏水Al2O3膜在多种有机溶剂中浸泡20 d仍保持良好的稳定性. Hydrophobic porous alumina membranes were obtained by surface modification with alkyl siloxane.The chemical stability of hydrophobic alumina membranes was investigated in different environments.The variation of surface properties was charaterized with contact angle measurement and Fourier transform infrared（FT-IR）.Results showed that the contact angle of the hydrophobic membrane was about 142°.The modified membrane surface kept hydrophobic in the concentrated H2SO4 and NaOH solution at the room temperature.The hydrophobic surface changed into hydrophilic one in concentrated H2SO4 at 120 ℃,and in NaOH solution at 80 ℃.The membranes were found to be chemically stable after immersed in organic solvent for 20 days.
作者 柯威 高能文 李梅 范益群
机构地区 南京工业大学化学化工学院材料化学工程国家重点实验室
出处 《南京工业大学学报（自然科学版）》 CAS 北大核心 2010年第6期45-49,共5页 Journal of Nanjing Tech University(Natural Science Edition)
基金 国家自然科学基金资助项目(20776067) 江苏省科技支撑计划资助项目(BE2009677)
关键词 多孔Al2O3膜 表面改性 疏水性 化学稳定性 porous alumina membrane surface modification hydrophobicity chemical stability
分类号 TQ028.8 [化学工程]
  • 相关文献

参考文献14

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共引文献11

同被引文献126

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引证文献8

二级引证文献24

南京工业大学学报（自然科学版）
2010年 第6期

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