The core of this study was fabrication of novel cellulose acetate/pluronic F-127 (CA/PF-127) composite membranes for forward osmosis (FO) applications. Performance and structure of the FO membranes under the influence of different applicator clearance gaps (ACGs) along with PF-127 wt.% contents were examined during the non-solvent phase separation (NIPS) method. Scanning electron microscopy, water contact angle, atomic force microscopy and attenuated total reflectance-Fourier transform infrared (ATR-FTIR) analysis were used to characterize the membrane properties. The best performance was attributed to the lower thickness and the higher porosity. The lower structural parameter, which reduces the internal concentration polarization (ICP), led to the highest water flux. The values of 10.58 (L/m2.h) and 0.39 (g/L) were obtained as water flux and specific reverse salt flux (SRSF) of the optimal FO membrane, which was synthesized by 20 wt.% of CA, 79.00 wt.% of N-methyl-2-pyrrolidone (NMP), 1.0 wt.% of PF-127 and 100 µm of ACG, respectively.

中文翻译：

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不对称醋酸纤维素/普朗尼克 F-127 正渗透膜的制备：通过控制厚度和孔隙率来最小化内部浓差极化

本研究的核心是制造用于正向渗透 (FO) 应用的新型醋酸纤维素/普朗尼克 F-127 (CA/PF-127) 复合膜。在非溶剂相分离 (NIPS) 方法中，研究了在不同涂布器间隙 (ACG) 以及 PF-127 wt.% 含量影响下的 FO 膜的性能和结构。使用扫描电子显微镜、水接触角、原子力显微镜和衰减全反射傅里叶变换红外 (ATR-FTIR) 分析来表征膜特性。最佳性能归因于较低的厚度和较高的孔隙率。降低内部浓差极化 (ICP) 的较低结构参数导致最高的水通量。值 10.58 (L/m2.h) 和 0。