【摘要】 以甲基丙烯酸羟乙酯(HEMA)、甲基丙烯酸甲酯(MMA)、甲基丙烯酸十八酯(SMA)为反应单体,在聚偏氟乙烯(PVDF)溶液中进行原位自由基聚合反应,制备PVDF/P(HEMA-MMASMA)共混物,利用涂刮法得到疏水膜。采用傅里叶变换红外光谱(FTIR)和核磁共振氢谱(1 HNMR)分析共混物的结构,利用扫描电子显微镜(SEM)和差示扫描量热法(DSC)表征膜表面的形态和结晶结构。试验结果表明:P(HEMA-MMA-SMA)组分和SMA质量分数的增加,对原位聚合法制备的PVDF/P(HEMA-MMA-SMA)膜的疏水性能影响并不显著;同时原位聚合法制备的PVDF/P(HEMA-MMA-SMA)膜表面具有微纳米级粗糙结构,比共混制得的膜具有更好的疏水性。更多还原

【Abstract】 The PVDF/P(HEMA-MMA-SMA)solution was prepared via in-situ radical polymerization of 2-hydroxyethyl methacrylate(HEMA),methyl methacrylate(MMA)and stearyl methacrylate(SMA)monomers in polyvinylidene fluoride(PVDF)solution,and the hydrophobic membrane was prepared by coating.The structure of PVDF/P(HEMA-MMA-SMA)was characterized by Fourier transform infrared spectroscopy(FTIR)and 1 H nuclear magnetic resonance spectroscopy(1 H-NMR).Scanning electron microscopy(SEM)images and differential scanning calorimeter(DSC)curves revealed the surface morphologies of membrane and crystalline structure.The results show that the increase of P(HEMAMMA-SMA)content or the SMA content has no significant effect on the hydrophobicity of PVDF/P(HEMA-MMA-SMA)membranes.Meanwhile,the surface of PVDF/P(HEMA-MMA-SMA)in-situ polymerization membranes has micro-scale and nano-scale rough structures,and its hydrophobicity is better than blend membrane.更多还原