摘要
膜材料性能在膜法治理挥发性有机物(VOCs)过程中起着至关重要的作用。研究利用直接缩合酰化反应,以2,3,6,7-四甲酸三蝶烯和3,3’-二氨基联苯胺为合成单体,制备了线型三蝶烯基聚酰胺聚合物;并通过超声溶解制成膜液,涂敷于聚砜底膜上制备出了新型VOCs截留型微孔聚合物膜。对聚合物进行了傅里叶红外(FTIR)、核磁氢谱(~1H-NMR)等表征与分析,证实了聚酰胺聚合物的合成;对聚合物膜进行了扫描电子显微镜(SEM)分析,结果显示所制备的复合膜完整无缺陷,分离层厚度为1μm。利用制备的分离膜,研究了压力、原料浓度等参数对复合膜分离VOCs/N_2体系的性能的影响,并考察了分离膜长期稳定性能。
Material properties play an important role in membranes for volatile organic compound(VOCs)removal.A linear triptycene-based polyamide polymer was synthesized by direct condensation acylation using home-made2,3,6,7-tetracarboxylic acid-triptycene and3,3'-diaminobenzidine as monomers.The polymer was dissolved in dimethyl sulfoxide under ultrasonication to prepare membrane solution,which was coated on substrate to prepare a cyclohexane-rejective microporous polyamide composite membrane.The synthesized polymer was first characterized by Fourier Transform Infrared Spectroscopy(FTIR)and1H Nuclear Magnetic Resonance(1H-NMR)to confirm the structure.Scanning Electron Microscopy(SEM)was used to analyze the surface structure of the polymer composite membrane,and the results show that there is no visible defect on the surface and the membrane thickness is about1μm.Effects of feed pressure and concentration on separation performance of VOCs/N2mixture were studied and membrane stability was investigated.
作者
仝童
周浩力
张磊
金万勤
TONG Tong;ZHOU Hao-li;ZHANG Lei;JIN Wan-qin(State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering,Nanjing Tech University, Nanjing 210009, China)
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2018年第6期1412-1418,共7页
Journal of Chemical Engineering of Chinese Universities
基金
国家重点研发计划项目(2017YFC0210901)
国家自然科学基金(21490585)
江苏高校‘青蓝工程’资助”
教育部创新团队项目(IRT13070)
江苏高校品牌专业建设工程资助项目(TAPP).
关键词
三蝶烯衍生物
聚合物
膜
分离
分子筛分
triptycene derivatives
polymers
membranes
separation
molecular sieving
