| 초록 |
Cellulose acetate (CA) membranes have been widely used in water purification processes due to their ease of processibility, non-toxicity, and chlorine stability. In particular, base hydrolysis of CA can induce antifouling regenerated cellulose (RC) membranes, but the detailed fabrication protocols are still elusive. In this work, we report the effects of hydrolysis conditions as well as beneath support layers in the resultant RC membranes. The acetyl groups (-CH3) in precursor CA membranes could be substituted to the hydroxyl groups (-OH) after immersed in aqueous NaOH solution. The degree of substitution was improved as increasing the hydrolysis time, confirmed by FT-IR, SEM, and contact angle analyses. In addition, a thin (＜ 10 μm) of RC layer was successfully coated onto a highly porous non-woven polypropylene support. Ultimately, the prepared RC membranes displayed a superior ultrafiltration (UF) performance compared to the pristine CA membranes with excellent fouling resistance. |
