33070324-杨丽龙-聚哌嗪酰胺复合纳滤膜的制备和表征--检后的0 -

吉林大学学士学位论文

学 士 学 位 论 文

聚哌嗪酰胺复合纳滤膜的制备和表征

Preparation and characterization of poly(piperazine-amide) composite nanofiltration membrane

学生姓名 杨丽龙 班级 3 学号 12070324

学 院 化学学院 专 业 化学 指导教师 王贵宾 职称 教授

目录

第一章 绪论 .............................................. 1

吉林大学学士学位论文

1.1膜及膜技术 ........................................... 1 1.1.1 膜及其分离技术发展简史 ............................. 1 1.1.2膜的分类 ........................................... 1 1.1.3 膜技术的现状及发展前景 ............................. 2 1.2 超滤膜基础 ........................................... 3 1.2.1 超滤膜的发展 ....................................... 3 1.2.2 超滤膜的分离机理 ................................... 3 1.3纳滤技术 ............................ 错误！未定义书签。 1.3.1 纳滤膜的特点和分离原理 ............................. 3 1.3.2 纳滤膜的制备方法 ................................... 4 1.3.3 纳滤技术研究进展 ................................... 4 1.3.4 膜性能的评价 ....................................... 5 1.4 论文选题的目的、意义及主要内容 ....................... 5 第二章 PPSU超滤膜的制备与表征 ........................... 7 2.1 引言 ................................................. 7 2.2 药品和仪器 ........................................... 7 2.2.1 药品 ............................................... 7 2.2.2 仪器 ............................................... 7 2.3 实验部分 ............................................. 7 2.3.1 PPSU的制备方法 .................................... 7 2.3.2 超滤膜的制备 ...................... 错误！未指定书签。 2.3.3 PPSU的红外光谱 .................................... 8 2.3.4 膜性能测试介绍 ..................................... 8 2.4 PPSU超滤膜性能 ..................... 错误！未定义书签。 2.5 小结 ................................................ 11 第三章 聚哌嗪酰胺复合纳滤膜的制备及性能表征 ............. 12 3.1 引言 ................................................ 12 3.2 药品和仪器 .......................................... 12 3.2.1 药品 .............................................. 12 3.2.2 仪器 .............................................. 12 3.3 实验部分 ............................................ 13 3.3.1 基膜的制备 ........................................ 13 3.3.2 界面聚合制备复合纳滤膜 ............................ 13 3.3.3 复合纳滤膜的表征 .................................. 15 3.4 结果与讨论 .......................................... 14 3.4.1 反应时间对复合纳滤膜性能的影响 .................... 15 3.4.2 有机相浓度对复合纳滤膜性能的影响 ................. 16 3.4.3 水相浓度对复合纳滤膜性能的影响 .................... 17

吉林大学学士学位论文

3.4.4 热处理温度对复合纳滤膜性能的影响 .................. 17 3.4.5 优化条件下膜性能 .................................. 18 3.4.6 复合膜的形态结构 .................................. 19 3.5小结 ................................................ 20 致谢 .................................................... 22 参考文献 ................................................ 23

吉林大学学士学位论文

聚哌嗪酰胺复合纳滤膜的制备和表征

摘要

本论文以无水哌嗪（PIP）和均苯三甲酰氯（TMC)分别为水相和有机相反应单体，通过界面聚合制备聚哌嗪酰胺复合纳滤膜，并进行结构和性能表征。 具体研究内容包括以下两部分: 1聚芳醚砜超滤膜的制备与表征

以聚芳醚砜PPSU为膜材料，N-甲基-吡咯烷酮（NMP）为溶剂，聚乙烯吡咯烷酮（PVP）为添加剂，采用相转化法制备聚芳醚砜超滤膜。扫描电镜（SEM）结果显示:所制得的膜表面均匀，断面是非对称的指状结构，靠近外皮层处指状结构紧密。所制的超滤膜纯水通量为131.58 L.m-2.h-1，对牛血清蛋白（MW 67000）的截留率为96.84%。

2聚哌嗪酰胺复合纳滤膜的制备与表征

以无水哌嗪(PIP)和均苯三甲酰氯(TMC)分别为水相和有机相反应单体，用界面聚合法制备聚哌嗪酰胺复合纳滤膜。研究了界面聚合反应中水相单体浓度、有机相单体浓度、反应时间、热处理温度等因素对所制备的复合膜分离性能的影响。得到制备聚哌嗪酰胺复合纳滤膜的最佳工艺条件为:水相单体浓度为1.0%，有机相单体浓度为0.1%，反应时间为60s，在60oC下热处理10min。在0.4MPa下，所制备的复合纳滤膜对1000ppm的罗丹明6G染料水溶液的截留率为41.48%，通量为17.73 L.m-2.h-1。

红外光谱（FT-IR）表明有酰胺键的生成。扫描电子显微镜(SEM)可观察到在基膜上复合了一层致密超薄表层。

关键词：超滤膜、界面聚合、复合纳滤膜、制备条件

Preparation and characterization of poly(piperazine-amide)

composite nanofiltration membrane

吉林大学学士学位论文

Abstract

In this dissertation, a series of poly(piperazine-amide) composite nanofiltration (NF) membranes were prepared on a microporous polyphenylsulfone (PPSU) support membrane through an interfacial polymerization technique with piperazine (PIP) and trimesoyl chloride (TMC), and their properties including chemical composition, membrane morphology and nanofiltration performance were systematic studied. 1 The preparation and characterization of poly(arylene ether sulfone) ultrafiltration membranes

The ultrafiltration membranes was prepared with PPSU as the membrane-forming material through the conventional immersion precipitation phase inversion method, when N-methyl-2-pyrrolidone (NMP) was chosen as the solvent, and polyvinylpyrrolidone (PVP K30) was chosen as pore former. The scanning electron microscopy was used to investigate the morphology of PPSU ultrafiltration membrane. It showed that the membrane has a smooth surface and the cross-section structure is a typical asymmetry finger-like structure. The water flux of the prepared membrane was 131.58 L穖n-2穐2-1 and the rejection to Bovine serum albumin (BSA MW67000) was 96.84%.

2 The preparation and characterization of poly(piperazine-amide) composite nanofiltration membranes

The poly(piperazine-amide) composite nanofiltration membranes were prepared by interfacial polymerization technique on a microporous PPSU support membrane using PIP and TMC as reactants, which were employed to perform synthetic dye treatment experiment with aqueous solution of rhodamine 6G. The effects of the different preparing conditions on NF membrane performance including the concentration of reactants, reacting time and curing temperature were thoroughly investigated. The optimal preparation conditions were given as follows: 1.0% PIP in water , 0.1% TMC in hexane, reacting time about 60s, curing temperature at 60oC and curing time about 10 min. The pure water flux of the prepared membrane under this condition was 17.73 L穖n-2穐2-1 and the rejection to rhodamine 6G was 41.48% at 0.4MPa.

IR analysis suggested the presence of aclyamide group (–NHCO–). SEM demonstrates that thin and dense poly(piperazine-amide) active functional layer was successfully formed on PPSU support membranes.

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