Crosslinked P84 copolyimide/MXene mixed matrix membrane with excellent solvent resistance and permselectivity
Crosslinked P84 copolyimide/MXene mixed matrix membrane with excellent solvent resistance and permselectivity
复制标题
交联 P84 共聚酰亚胺/MXene 混合基质膜，具有优异的耐溶剂性和选择性渗透性
DOI：
10.1016/j.cjche.2018.10.005
复制
发表时间：
2019-04-01
影响因子：
3.8
通讯作者：
Ma, Xufeng
中科院分区：
文献类型：
--
作者：
Han, Runlin;Xie, Yongli;Ma, Xufeng
MXene是一种新型的二维层状材料，具有良好的亲水性和选择透过性。将MXene引入到P84聚合物基体中，并用三乙烯四胺（TETA）交联该基体，以改善聚酰亚胺膜的选择透过性和耐溶剂性。采用SEM、AFM和ATR-FTIR对膜进行了表征，考察了MXene含量对膜形貌和分离性能的影响。在0.1MPa和室温下，用18%P84和1%MXene制备的膜对龙胆紫（408）有很高的截留率（100%）和通量（268 L·m（-2）·h（-1））。MXene赋予膜更多的水通道和更致密的功能层，使膜性能得到明显改善。在18天的浸泡过程中，该膜在与TETA交联后显示出对二甲基甲酰胺（DMF）、丙酮和甲醇的优异耐溶剂性。(C)2018中国化学工业与工程学会、化学工业出版社联合主办，公司. All rights reserved.
MXene is a novel 2D lamellar material with excellent hydrophilicity and permselectivity. MXene was introduced in the P84 polymer matrix and the matrix was crosslinked with triethylenetetramine (TETA) to improve the permselectivity and solvent resistance of the polyimide membrane. The membrane was characterized with SEM, AFM and ATR-FTIR, and effects of MXene content on the membrane morphology and separation performance are investigated. The membrane prepared with 18% P84 and 1% MXene shows high rejection (100%) to gentian violet (408) and high flux (268 L.m(-2).h(-1)) at 0.1 MPa and ambient temperature. MXene endows the membrane with much water channel and denser functional layer which improves the membrane performance obviously. The membrane shows excellent solvent resistance to dimethylformamide (DMF), acetone and methanol after crosslinking with TETA during the 18 days of immersion. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.