Separation Process Research Group (SPRG), Department of Engineering, University of Kashan, Kashan, Iran.
Separation Process Research Group (SPRG), Department of Engineering, University of Kashan, Kashan, Iran; Energy Research Institute, University of Kashan, Ghotb-e-Ravandi Ave., Kashan, Iran.
Carbohydr Polym. 2020 Jun 1;237:116128. doi: 10.1016/j.carbpol.2020.116128. Epub 2020 Mar 6.
Herein, a thin film nanocomposite (TFN) membrane was prepared through deposition of a very thin mixed matrix layer of PEBAX®1657/chitosan-wrapped multiwalled carbon nanotubes (CWNTs) on an ultraporous polyethersulfone (PES) substrate. The eco-friendly CWNTs were synthesized via non-covalent functionalization of MWNTs by carbohydrate polymer chitosan. They were then incorporated into PEBAX®1657 matrix at different loadings (0, 0.1, 0.5, 1 and 2 wt%). The membranes were analyzed using SEM, AFM, FTIR, XRD and contact angel analyses. Furthermore, pure water fluxes through the membranes were investigated at 1, 2 and 3 bar and Malachite green separation properties of the membranes were evaluated at 2 bar. The results showed that the highest permeate flux (∼13.85 L/mh) and rejection (∼98.7%) were obtained at 1 wt% and 0.1 wt% CWNT dosages, respectively. Additionally, the slight flux decline of the membranes during 5 h indicated the improved antifouling properties.
本文通过在超多孔聚醚砜（PES）基底上沉积一层非常薄的 PEBAX®1657/壳聚糖包裹的多壁碳纳米管（CWNTs）混合基质层，制备了一种薄膜纳米复合（TFN）膜。环保型 CWNTs 通过碳水化合物聚合物壳聚糖对 MWNTs 进行非共价功能化合成。然后，将其以不同负载量（0、0.1、0.5、1 和 2wt%）掺入到 PEBAX®1657 基质中。使用 SEM、AFM、FTIR、XRD 和接触角分析对膜进行了分析。此外，还在 1、2 和 3bar 下研究了膜的纯水通量，并在 2bar 下评估了膜对孔雀石绿的分离性能。结果表明，在 1wt%和 0.1wt% CWNT 剂量下，分别获得了最高的渗透通量（约 13.85L/mh）和截留率（约 98.7%）。此外，膜在 5 小时内通量略有下降，表明其抗污染性能得到了改善。
Zotero 插件