2026-11-092026-11-09https://scholars.csmu.edu.tw/handle/123456789/38766Membranes with high permeation combined with high rejection rate and high fouling resistance are in high demand in market. The stability of membrane is necessary in water and industrial wastewater treatmetn application for volume reduction of aqueous wastes, recovery of chemcials from liquid industrial wastes, desalination, drinking water purification and removal of oil from oil-water emulsions. Membranes with hydrophilic characteristics have drawn considerable attention in practical using in recent years because of its better fouling resistance. Cellulose acetate (CA) and polyvinylidenefluoride (PVDF) membranes are widely used in ultrailtration application, although they show low chemcial, mechanical and thermal resistance. In order to prepare membranes with improved properties, modification of CA and PVDF membranes with polyethelene glycol (PEG), polyvinylpyrrolidone (PVP) and LiCl have been attempted. In this study, CA or PVDF has been mixed with PEG, PVP, or LiCl as pore-forming hydrophilic additives in a polar solvent.Then the porous asymmetric hydrophilic membranes were prepared by the phase inversion process induced by a nonsolvent. The effects of polymer precursor, additive molecular weight, and additive concentration given by a mixture desing of experimetns on membrane compaction, pure water flux, water content have been studied and discussed. Furthermore, the effect of proe-forming hydrophilic additives ont eh membrane morphology and transport properties was also investigated. The efficency of humic acid separtion by the developed polymer membranes have also been quantified. The thermal stability of the deveoped membranes prepared with PEG additives has also been investigated using thermogravimetric analysis and differential scanning calorimetry.在商業應用中，薄膜常被期望能同時擁有高的滲透率、高排除率及高積垢阻抗能力。此外，好 的穩定性亦是薄膜被應用於水及工業廢水處理程序中（如減少廢水的體積、自工業液體廢棄物中回 收化學品、鹽析、飲用水淨化及自油-水的微浮液中將油分離出等）所應具備的另一種重要特性。因 此，近年來具有親水性特性的薄膜因具有較佳的積垢阻抗能力，而逐漸在商業應用程序中備受矚目。 醋酸纖維膜或聚偏二氟乙烯膜是常被應用於超過濾程序中的疏水性薄膜材料，僅管其化學阻 抗、機械阻抗及熱阻抗能力等均不理想。因此，在本研究中為了改善CA 或PVDF 薄膜的親水性、 化學阻抗能力、機械強度、熱阻抗能力等性質，將添加PEG、PVP、LiCl 等親水性的孔洞改質劑， 並以誘導式非溶劑的相轉法製備此一多孔性的非對稱性薄膜。高分子前驅物、添加劑分子量及添加 劑濃度對薄膜物、化性質的影響將一系列的實驗設計，如薄膜的壓密度、純水通量等來方式來分析 並討論此一親水性孔洞改質劑對薄膜型態及傳輸性質的影響。此外，此改質後的薄膜將進一步進行 腐植酸的分離試驗，並以熱重分析及差分掃描熱卡計來探討薄膜的熱穩定性。醋酸纖維聚偏二氟乙烯親水性混合膜通量回收率cellulose acetate (CA)polyvinylidenefluoride (PVDF)hydrophilicityblend membranesfluxrecovery ratioProject