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摘要
通过埃洛石纳米管内壁正电荷与聚合物分子链上负电荷的静电作用,将大分子链负载于埃洛石纳米管内壁。利用负载大分子链作为交联点,通过Pickering乳液法将纤维状埃洛石纳米管构筑为三维气凝胶网络状态,制备了埃洛石纳米管气凝胶。利用傅里叶变换红外光谱仪、扫描电子显微镜、热重分析仪等分析气凝胶的微观形貌、孔结构和热稳定性。结果表明,通过静电作用负载聚硅氧烷,通过Pickering乳液法成功制备具有微孔和介孔结构的球状埃洛石气凝胶,该材料可用于建筑保温、载体、环境净化等领域。
Abstract
The macromolecular chains were loaded on the inner walls of halloysite nanotubes by the electrostatic interaction between the positive charges on the inner walls of halloysite nanotubes and the negative charges on the polymer molecular chains.Using the loaded macromolecular chain as crosslinking point,the fibrous halloysite nanotube was constructed as a 3D aerogel network by Pickering emulsion method,and the halloysite nanotube aerogel was prepared.Fourier transform infrared spectroscopy,scanning electron microscope and thermogravimetric analyzer were used to analyze the microscopic morphology,pore structure and thermal stability of aerogels.The results showed that polysiloxane was loaded by electrostatic force,and the spherical microstructured halloysite aerogel material with micropore and mesoporous structure was successfully prepared by Pickering emulsion method.The material can be used in the fields of building insulation,carrier,environmental purification,etc.
关键词
埃洛石
/
气凝胶
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静电作用
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Pickering乳液
Key words
halloysite
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aerogel
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electrostatic interaction
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Pickering emulsion
基于静电作用的埃洛石气凝胶的制备与结构表征[J].
化工新型材料, 2020, 48(9): 277-280 DOI:10.19817/j.cnki.issn 1006-3536.2020.09.061
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基金资助
天津市自然科学基金(18JCQNJC03000);中国博士后科学基金面上项目(2019M651052)
