CAJ | 학술논문

由溶胶-凝胶法与水热法相结合,成功制备了氧化铝超滤膜。利用 SEM、XRD 等表征手段,研究膜层晶型、粒子形貌、孔径大小及其分布、膜层厚度等的合理调控,并表征其通量、截留率和耐酸碱性能。结果表明,水热处理溶胶并于合适温度下烧结,可有效调控超滤膜膜层的晶型和粒子的形貌；通过分散剂 PEG合适型号的选择,可有效调控膜孔孔径及其分布；合适的涂膜液浓度并适量的成膜助剂PVA,可有效调控膜层厚度并避免其开裂；当氧化铝呈α态时,超滤膜具有优秀的耐酸碱性能。
유용효-응효법여수열법상결합,성공제비료양화려초려막。이용 SEM、XRD 등표정수단,연구막층정형、입자형모、공경대소급기분포、막층후도등적합리조공,병표정기통량、절류솔화내산감성능。결과표명,수열처리용효병우합괄온도하소결,가유효조공초려막막층적정형화입자적형모；통과분산제 PEG합괄형호적선택,가유효조공막공공경급기분포；합괄적도막액농도병괄량적성막조제PVA,가유효조공막층후도병피면기개렬；당양화려정α태시,초려막구유우수적내산감성능。
Alumina ultrafiltration membrane was prepared by sol-gel hydrothermal method.SEM and XRD were employed to characterize the crystal form,particle morphology,pore size distribution and thickness of mem-brane layer surface so as to achieve a good control of the membrane layer characteristic.In addition,the flux, rej ection,acid and alkaline resistances of the membrane were also tested.The results showed that crystal form and particles surface morphology of ultrafiltration membrane could be efficiently controlled by treatment with hydrothermal method followed by sintering at suitable temperature.Pore size and pore size distribution could be well tuned by using different types PEG as dispersant agents.The thickness and cracking of membrane layer could be efficiently controlled by changing the concentration of the coating solution and by adding suitable amount of PVA.It was found thatα-Al2 O3 ultrafiltration membrane displayed a better acid and alkaline resist-ance than that of transition-state.