| 超支化聚酯低压纳滤膜的制备与表征 |
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| 引用本文： | 俞景珍,徐又一,朱利平,魏秀珍,朱宝库.超支化聚酯低压纳滤膜的制备与表征[J].高分子学报,2009,0(7):707-711. |
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| 作者姓名： | 俞景珍 徐又一 朱利平 魏秀珍 朱宝库 |
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| 作者单位： | 浙江大学高分子科学研究所,高分子合成与功能构造教育部重点实验室,杭州,310027 |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | 通过超支化聚酯(HPE)末端的羟基与戊二醛(GA)之间的羟醛缩合反应,采用简单的浸涂-交联方法,制备了一种以聚砜超滤膜为支撑层,交联的HPE为活性分离层的复合纳滤膜.采用衰减全反射红外光谱(ATR-FTIR)、接触角测定、扫描电子显微镜(SEM)对纳滤膜的表面化学组成、亲水性和膜形貌进行了表征.考察了HPE溶液浓度、GA溶液浓度对膜分离和渗透性能的影响,优化的HPE和GA溶液浓度分别为9.8 g/L和7.4 g/L,此时在0.4 MPa下膜的水通量达69.6 L/(m2.h),对Na2SO4脱除率为93.2%,表现出低操作压力、高通量、高脱盐率的优异性能.纳滤膜对无机盐的截留顺序为Na2SO4>NaCl>MgSO4>MgCl2,呈现明显的荷负电特征.
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| 关 键 词： | 超支化聚酯 纳滤膜 结构与性能 |
| 收稿时间： | 2008-12-18 |
PREPARATION AND CHARACTERIZATION OF LOW-PRESSURE NANOFILTRATION MEMBRANES BASEDON CROSSLINKED HYPERBRANCHED POLYESTER |
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| YU Jingzhen,XU Youyi,ZHU Liping,WEI Xiuzhen,ZHU Baoku.PREPARATION AND CHARACTERIZATION OF LOW-PRESSURE NANOFILTRATION MEMBRANES BASEDON CROSSLINKED HYPERBRANCHED POLYESTER[J].Acta Polymerica Sinica,2009,0(7):707-711. |
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| Authors: | YU Jingzhen XU Youyi ZHU Liping WEI Xiuzhen ZHU Baoku |
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| Institution: | Institute of Polymer Science, Key Laboratory of Macromolecule Synthesis and Fun ctionalization, Zhejiang University, Hangzhou 310027 |
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| Abstract: | Thin-film composite nanofiltration membranes were prepared by a simple dipping and crosslinking process.A polysulfone(PSF) ultrafiltration membrane was used as the support and a crosslinked hyperbranched polyester(HPE) as the active separation layer.The separation layer was immobilized onto the support via the aldol condensation of HPE with glutaraldehyde(GA).The prepared membranes were characterized by attenuated total reflection Fourier transform infrared spectroscopy(ATR-FTIR),water contact angle measure... |
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| Keywords: | Hyperbranched polyester Nanofiltration membrane Crosslinking Low operation pressure |
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