As a water treatment process that has the potential to require low energy inputs, forward osmosis (FO) has experienced a significant breakthrough in recent decades, particularly in membrane development. This paper focuses on blending poly (vinylidene fluoride) (PVDF) with hydrophilic polyacrylonitrile (PAN) to form PVDF/PAN substrates for thin film composite membranes (TFC). The membranes were characterized using a scanning electron microscopy, iS50 FTIR spectrometer, and contact angle system. With high porosity, low tortuosity, and interconnected hydrophilic pores of their substrates, the obtained TFC membranes showed high water fluxes. These membranes yielded superior water and reverse salt fluxes in FO tests compared to the commercial CTA membrane. The membranes also showed excellent mechanical performance under PRO test conditions.

作为一种可能需要低能量输入的水处理工艺，正向渗透 (FO) 在近几十年来经历了重大突破，特别是在膜开发方面。本文重点研究将聚偏氟乙烯 (PVDF) 与亲水性聚丙烯腈 (PAN) 共混以形成用于薄膜复合膜 (TFC) 的 PVDF/PAN 基材。使用扫描电子显微镜、iS50 FTIR 光谱仪和接触角系统对膜进行表征。所获得的 TFC 膜具有高孔隙率、低曲折度和基材的相互连接的亲水孔，显示出高水通量。与商业 CTA 膜相比，这些膜在 FO 测试中产生了出色的水通量和反向盐通量。在 PRO 测试条件下，这些膜还显示出优异的机械性能。