不同形式的纳米ZnO对PVDF / ZnO杂化膜性能的影响,Journal of Applied Polymer Science

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不同形式的纳米ZnO对PVDF / ZnO杂化膜性能的影响
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-02-20 , DOI: 10.1002/app.49070
Wei Wang _{1,

2} , Hanshu Sun _{1,

2}

Affiliation

在本文中，通过热诱导相分离制备了具有不同形式的纳米ZnO作为添加剂的聚偏二氟乙烯（PVDF）/ ZnO杂化膜。系统研究了ZnO颗粒的形貌对杂化膜微结构和性能的影响。X射线衍射（XRD）和扫描电子显微镜（SEM）表征了三种不同形式的纳米ZnO。然后通过XRD，傅立叶变换红外，差示扫描量热仪，SEM，能量色散X射线光谱，原子力显微镜，机械强度测试，孔隙率测量，水接触角测量，纯水通量测量，拒收率进行了一系列测试。测量，通量恢复率（FRR）测量和光催化降解测试以表征杂化膜。结果表明，掺杂不同形式ZnO的杂化膜具有不同的结构和性能。多孔ZnO对PVDF膜的改性效果最好。PVDF /多孔ZnO杂化膜的水通量和OVA截留率分别可以达到纯PVDF膜的1.6倍和1.3倍，其FRR可以达到约95％。掺有多孔ZnO的杂化膜具有出色的自清洁性能，其MB降解率可达到约51％。

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Effect of different forms of nano‐ZnO on the properties of PVDF/ZnO hybrid membranes

In this article, polyvinylidene fluoride (PVDF)/ZnO hybrid membranes with different forms of nano‐ZnO as additives were prepared by thermally induced phase separation. The effects of the morphology of ZnO particles on the microstructure and properties of hybrid membranes were systematically investigated. Three different forms of nano‐ZnO were characterized by X‐ray diffraction (XRD) and scanning electron microscope (SEM). Then a series of tests were made through XRD, Fourier transform infrared, differential scanning calorimeter, SEM, energy‐dispersive X‐ray spectroscopy, atomic force microscopy, mechanical strength testing, porosity measurement, water contact angle measurement, pure water flux measurement, rejection measurement, flux recovery rate (FRR) measurement, and photocatalytic degradation testing to characterize the hybrid membrane. The results show that the hybrid membranes which were doped with different forms of ZnO have different structures and properties. Porous ZnO has the best modification effect on PVDF membranes. The PVDF/porous ZnO hybrid membranes' water flux and OVA rejection can reach 1.6 and 1.3 times of pure PVDF membrane, respectively, and its FRR can reach about 95%. The hybrid membrane doped with porous ZnO has excellent self‐cleaning performance, and its degradation rate of MB can reach about 51%.

更新日期：2020-02-20

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