The most common reverse osmosis (RO) membranes that achieved economic water desalination applications are made of cellulose acetate (CA). Cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB) have been blended with CA as innovative combinations to produce RO membranes through phase inversion technique. The relation between membranes compositions, structure, morphology, hydrophilicity and applicability were examined. Scanning electron microscope and Fourier transform infrared were used to evaluate the microstructure of these membranes. Hydrophilicity, strength, salt rejection and flow permeates were tested using a cross-flow reverse osmosis system and contact angle calculations. The contact angle measurements showed an increase from 56° for CA membrane to 71° for CAP membrane and 74° for CAB membrane. The hydro-phobicity of such membranes increased as CAP and CAB loadings increased. The salt rejection of pristine RO membranes increased from 93.2% with permeate of 1.4 L/m² h for CA membrane to 96.8% with permeate of 1.07 L/m² h for CAB membrane and 97.8% with permeate of 18.62 L/m²hr for CAP membrane. The salt rejection of supported membranes onto a nonwoven polyester fabric decreased from 92.8% with permeate of 3.78 L/m² h for CA/0.5 wt% CAP to 91.4% with permeate of 6.05 L/m² h for CA/0.5 wt% CAB and 88.5% with permeate of 5.84 L/m² h for CA/0.1 wt% CAP/0.1 wt% CAB.

实现经济脱盐应用的最常见的反渗透（RO）膜是由醋酸纤维素（CA）制成的。醋酸丙酸纤维素（CAP）和醋酸丁酸纤维素（CAB）已与CA混合在一起，作为创新组合，可通过相转化技术生产RO膜。研究了膜组成，结构，形态，亲水性和适用性之间的关系。扫描电子显微镜和傅立叶变换红外被用来评估这些膜的微观结构。使用错流反渗透系统和接触角计算测试了亲水性，强度，排盐率和渗透液。接触角测量结果显示，CA膜从56°增加到CAP膜为71°，CAB膜增加到74°。这种膜的疏水性随着CAP和CAB负载的增加而增加。原始反渗透膜的脱盐率从93.2％提高到1.4 L / m CA膜² h达到96.8％，渗透率为1.07 L / m ²  h CAB膜为97.8％，渗透率为18.62 L / m ² hr CAP膜。支撑膜在非织造聚酯织物上的脱盐率从92.8％ （CA / 0.5 wt％CAP的渗透率为3.78 L / m ² h下降到91.4％CA / 0.5 wt％CAB的渗透率为6.05 L / m ² h）CA / 0.1 wt％CAP / 0.1 wt％CAB的渗透率为5.84 L / m ² h，为88.5％。