The FTIR spectra of TiO2@SrTiO3@PDA NWs/PVDF NCs containing different contents of TiO2@SrTiO3@PDA NWs are shown in Fig.4. The FTIR spectra demonstrated that the crystalline phase of PVDF is mainly γ-phase. As seen from Fig.4, all samples show strong infrared absorption peaks at 812, 83...
Raman and FTIR spectroscopyNanocomposites have been prepared by melt mixing, loading the polyvinylidene fluoride matrix with various concentrations of magnetite. Wide Angle X-Ray Scattering, Raman, Fourier Transform Infrared, and Electron Paramagnetic Resonance spectroscopy were used to investigate these ...
PVDF characterization Several techniques are used to evaluate the microcrystalline structure of PVDF, including differential scanning calorimetry (DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) [102]. Differential scanning calorimetry (...
Fig.2 FTIR spectra of PVDF membrane with different additives 2.2不同添加剂对膜形态的影响 PVDF平板疏水膜的形貌结构如图3～6所示。添加剂对膜结构具有较大的影响, 对比图3和图4可以发现, 丙酮的加入抑制了指状大孔的形成, 而且皮层较厚。Strathmann等[16]认为大孔的形成是由于膜的顶层存在局部缺陷, 非溶剂...
It is well reported that ozone treated PVDF is an effective means for obtaining suitable functional groups to graft copolymers for various applications [[41], [42], [43]]. The FTIR spectra of powder and ozone treated PVDF, PVDF-g-PMM-co-AA and PVDF-g-PBSA are presented in Fig. 2. Fr...
摘要：为了提高PVDF 微滤膜的亲水性和抗污染性能，通过浸没沉淀相转换法制备聚偏氟乙烯（PVDF ）微滤膜，利 用多巴胺超强的黏附性及易自聚形成聚多巴胺（PDA ）的优势，对PVDF 微滤膜进行表面涂覆改性，并通过ATR-FTIR 、SEM 和抗污染性能测试等方法探究PVDF 微滤膜的性能.结果表明：通过涂覆的方法成功地将PDA 沉积...
The change in the functional groups of PVDF after blending with PAN was investigated by Fourier transform infrared (FTIR). The wettability was examined to characterize the surface morphology of the blends. The effect of PAN content on the blend fiber was also studied for UV-vis absorption ...
The modified surface of the plasma treated PVDF membrane was characterized by Fourier transform infrared spectroscopy (FTIR) in attenuated total reflectance mode (ATR). The IR spectra from 450 cm−1to 1500 cm−1of the original and the plasma treated PVDF membranes at a distance of 40 mm an...
The crystallinity of PVDF-HFP/Co-ZnO nanofibers were further analyzed by FTIR spectra and represented in Fig. 5. The vibrational peaks observed at 611, 760, 795, 1146, 1210 cm−1 were due to the α-phase of PVDF-HFP27,28,29. The peaks at 1270, 840, 878 cm−1 correspond to...
聚乙烯醇(PVA)纳米纤维膜为分离层,采用静电纺丝法制备超滤膜,并用水/丙酮混合溶液对复合纳米纤维膜表面进行溶液处理,再加入戊二醛交联改性得到致密分离层.采用扫描电子显微镜(SEM)和红外光谱(FTIR)表征了复合超滤膜的表面,用水接触角(WCA)表征复合超滤膜的亲水性.在0.02 MPa恒压下死端过滤油/水乳液,测试复合超滤膜...