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Effect of TiO2 nanoparticle size on the performance of PVDF membrane

机译:TiO2纳米粒径对PVDF膜性能的影响

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The comparison of the performance and morphology was carried out between neat PVDF membrane and PVDF composite membranes with nanosized TiO2 particles of different size. The results of permeability and instrumental analysis illustrated that nanometer size obviously affected the performance and structure of the PVDF membranes. The smaller nanoparticles could improve the antifouling property of the PVDF membrane more remarkably. The surface and cross-section of the membranes were observed with an atomic force microscopy (AFM), a scanning electron microscope (SEM). The TiO2/PVDF membrane with smaller nanoparticles had smaller mean pore size on its surface and more apertures inside the membrane. X-ray diffraction (XRD) experiments also suggested that smaller TiO2 nanoparticles had stronger effect on the crystallization of PVDF molecules. (c) 2006 Elsevier B.V. All rights reserved.
机译:在纯净的PVDF膜和具有不同尺寸的纳米TiO2颗粒的PVDF复合膜之间进行了性能和形态的比较。渗透性和仪器分析的结果表明,纳米尺寸明显影响了PVDF膜的性能和结构。较小的纳米颗粒可以更明显地改善PVDF膜的防污性能。用原子力显微镜(AFM),扫描电子显微镜(SEM)观察膜的表面和横截面。具有较小纳米颗粒的TiO2 / PVDF膜在其表面上具有较小的平均孔径,在膜内部具有更多的孔。 X射线衍射(XRD)实验还表明,较小的TiO2纳米颗粒对PVDF分子的结晶作用更强。 (c)2006 Elsevier B.V.保留所有权利。

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