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首页> 外文期刊>Current Applied Polymer Science >Photo-Induced Hydrophilicity Study of Poly(Methyl Methacrylate)/TiO2 Nanocomposite Prepared in Ionic Liquid Based Microemulsion System | Bentham Science
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Photo-Induced Hydrophilicity Study of Poly(Methyl Methacrylate)/TiO2 Nanocomposite Prepared in Ionic Liquid Based Microemulsion System | Bentham Science

机译：离子液体微乳液体系中制备的甲基丙烯酸甲酯/ TiO2纳米复合材料的光致亲水性研究边沁科学

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Background: To produce alternative hydrophilic patterns on the surface of a nanocomposite,many different approaches have been used. The ionic liquid (IL) microemulsions expanding thepotential uses of ILs that can provide hydrophilic or hydrophobic nanodomains as a nanoreactor to thesynthesis of a novel type of nanocomposites with special properties.Objective: This study aims to investigate photo-induced hydrophilicity of modified poly(methyl methacrylate)(PMMA) containing TiO2 nanoparticles, synthesized by using ionic liquid-in-oil microemulsionsystem.Materials and Methods: A series of visible light-responsive PMMA/TiO2 nanocomposite films wereprepared in an ionic liquid (IL) based microemulsion containing methyl methacrylate monomer, 1-buthyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]), Triton X-100 and 1-buthanol. The ternaryphase diagram of the microemulsion system has been constructed and concluded that it is thermodynamicallystable at polymerization temperature of 60°C. The oil phase of the system was polymerizedto obtain the PMMA nanocomposite films with different concentration of TiO2 nanoparticles.Techniques such as XRD, AFM and TEM were carried out to characterize the fabricated transparentnanocomposite films. The visible light photo-induced hydrophilicity of the preparedPMMA/IL/TiO2 films was evaluated by measuring the contact angle of water on a thin film of thenanocomposite during the visible light illumination.Results: The results showed that the surface hydrophilicity of the nanocomposites will be changedsignificantly with light illumination and the PMMA/IL with 0.01 wt.% loading of TiO2 showed thebest hydrophilicity. The contact angle of the nanocomposite was decreased with increasing of irradiationtime and from that, the surface energy and work of adhesion increased.Conclusion: It is concluded that modification of TiO2 nanoparticles with ionic liquid is a new approachfor making visible light photo-induced polymer nanocomposites with improved hydrophilicityperformance.
机译：背景：为了在纳米复合材料的表面上产生替代性的亲水图案，已经使用了许多不同的方法。离子液体（IL）微乳液扩展了IL的潜在用途，该IL可以提供亲水或疏水的纳米域作为纳米反应器，以合成具有特殊性质的新型纳米复合材料。目的：这项研究旨在研究改性聚（甲基）的光诱导亲水性材料和方法：在含有甲基丙烯酸甲酯单体的离子液体（IL）基微乳液中制备了一系列可见光响应的PMMA / TiO2纳米复合膜。 ，1-丁基-3-甲基咪唑四氟硼酸酯（[bmim] [BF4]），Triton X-100和1-丁醇。构建了微乳液体系的三元相图，并得出结论，它在聚合温度为60°C时是热力学稳定的。将该体系的油相进行聚合，得到不同浓度的TiO2纳米颗粒的PMMA纳米复合薄膜。采用XRD，AFM和TEM等技术对制备的透明纳米复合薄膜进行表征。通过在可见光照射下测量水在纳米复合材料薄膜上的接触角，评价了制备的PMMA / IL / TiO2薄膜的可见光亲水性。结果：结果表明，纳米复合材料的表面亲水性为随着光的照射，PMMA / IL的变化显着，具有0.01 wt。％TiO2含量的PMMA / IL显示出最佳的亲水性。随着辐照时间的增加，纳米复合材料的接触角减小，表面能和粘附功增加。结论：用离子液体改性TiO2纳米粒子是制备可见光光致聚合物纳米复合材料的新方法。具有改善的亲水性能。

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