天津工业大学学报2019，Vol.38Issue(1)：17-21,26,6.DOI:10.3969/j.issn.1671-024x.2019.01.004
单体配比对PI/PP耐溶剂复合纳滤膜结构与性能的影响
Effect of monomer ratio on structure and properties of PI/PP solvent resistant nanofiltration membrane
摘要
Abstract
In order to improve the solvent resistance of nanofiltration, m-phenylene diamine (MPD) is utilized as the monomer of aqueous phase, 1, 2, 4, 5-benzene tetracarbonyl chloride (BTC) and trimesoyl chloride (TMC) are utilized as the monomers of organic phase, then polyimide/polypropylene (PI/PP) composite nanofiltration membrane was prepared by interfacial polymerization and subsequent imidization on the PP support membrane. Using attenuated total reflection Fourier transformed infrared spectroscopy (ATR-FTIR) , scanning electron microscope (SEM) to observe the composition, structure and performance of composite membrane. The effects of aqueous phase and organic phase monomer concentration ratio and the quality concentration ratio of TMC to BTC on membrane structure and properties were investigated. Experimental results show that when the aqueous phase concentration is 1.14 g/L, the mole concentration ratio of aqueous phase monomer to organic phase monomer is1.15: 1, and organic phase monomer mass concentration ratio of TMC to BTC is 6: 4, the performance of the composite membrane is optimal. The flux of the resulted membrane is 52.6 L/ (m2·h) , and rejection of PEG400 is93.8％ under 0.5 MPa pressure. After immersed in eight kinds of common solvent, such as methanel, ethanel, etc, for 8 days, the tensile strength, flux and regection have little change, which explains that the resulted membrane showed excellent solvent resistance.关键词
单体配比/耐溶剂/共聚剂/界面聚合/纳滤膜Key words
monomer ratio/solvent resistant/copolymerization/interfacial polymerization/nanofiltration membrane分类
化学化工引用本文复制引用
杨振生,史克,杨丽利,王志英..单体配比对PI/PP耐溶剂复合纳滤膜结构与性能的影响[J].天津工业大学学报,2019,38(1):17-21,26,6.基金项目
河北省高等学校科学技术研究重点项目(ZD201517) （ZD201517）
