【摘要】 以聚芳硫醚酮酰胺(PASKA)为膜材料,N-甲基吡咯烷酮(NMP)为溶剂通过相转化法制备分离膜。分别用原子力显微镜(AFM)和扫描电镜(SEM)研究薄膜的微观结构,分析了铸膜液质量分数对膜表面和断面结构的影响以及对表面粗糙度的贡献情况,并进一步探讨了不同保存方法对膜的结构和性能产生的差异。更多还原

【Abstract】 Polyarylene sulfide ketone amide(PASKA) separation membrane was prepared through phase inversion method using N-methylpyrrolidone(NMP)as solvent.Effects of PASKA mass fraction on the cross-section and surface morphology were observed by SEM and AFM,respectively and surface roughness influnced by PASKA mass fraction were also analysized.With the mass fraction increasing,the membrane top surface becomes denser and the roughness tested by AFM is lesser,besides the pore size in the membrane becomes smaller and water flux through the membrane becomes less.The distinction of membrane structure and property in different preservation ways was explained contrastly and it’s suitable to preserve the membrane that is dealt in glycerin.更多还原