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具有良好亲水性和高效除硼性能的带负电荷多元醇功能化聚砜膜的合成

Synthesis of Negatively Charged Polyol-Functional PSF Membranes with Good Hydrophilic and Efficient Boron Removal Properties.

作者信息

Jin Jinbo, Du Xilan, Yu Jie, Qin Shuhao, He Min, Zhang Kaizhou, Yang Jingkui

机构信息

College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China.

National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China.

出版信息

Polymers (Basel). 2019 May 1;11(5):780. doi: 10.3390/polym11050780.

DOI:10.3390/polym11050780
PMID:31052453
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6572502/
Abstract

Boron removal remains a major barrier to water purification, it is important to develop a specialized adsorption membrane for boron removal. By means of a simple and effective method, a hydrophilic membrane for boron removal with a polyhydroxy functional group on the surface was prepared. Firstly, a polysulfone (PSF) membrane was modified by co-depositing polyethyleneimine (PEI) with dopamine (DA) in one-step to produce amine-rich surfaces, then the DA/PEI-functionalized membranes were reacted with glycidol, with the prepared membranes corresponding to PSF-PDA/PEI membranes and PSF-diol membranes. The prepared membranes were characterized by water-uptake, FTIR, (X-ray photoelectron spectroscopy) XPS, (Field emission scanning electron microscope) FESEM, and zeta potential measurements. The hydrophilicity of the membrane was characterized by the static water contact angle (WCA) test. In addition, we systematically studied the impact of initial boron concentration, chelating time, and pH value on boron removal performance. The results showed that the PSF-diol membrane had strong hydrophilicity with a WCA of about 38°. The maximum adsorption capacity of boron appeared to be 1.61 mmol/g within 10 min at a boron concentration of 300 mg/L. Adsorption kinetics showed that saturation adsorption can be achieved in minutes at the initial concentration of 5 mg/L, which is beneficial to a rapid filtration process.

摘要

硼的去除仍然是水净化的主要障碍，开发一种专门用于去除硼的吸附膜很重要。通过一种简单有效的方法，制备了一种表面带有多羟基官能团的亲水性除硼膜。首先，通过一步共沉积聚乙烯亚胺（PEI）和多巴胺（DA）对聚砜（PSF）膜进行改性，以产生富含胺的表面，然后使DA/PEI功能化的膜与缩水甘油反应，制备的膜分别对应于PSF-PDA/PEI膜和PSF-二醇膜。通过吸水率、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）、场发射扫描电子显微镜（FESEM）和zeta电位测量对制备的膜进行了表征。通过静态水接触角（WCA）测试对膜的亲水性进行了表征。此外，我们系统地研究了初始硼浓度、螯合时间和pH值对硼去除性能的影响。结果表明，PSF-二醇膜具有很强的亲水性，WCA约为38°。在硼浓度为300 mg/L时，10分钟内硼的最大吸附容量似乎为1.61 mmol/g。吸附动力学表明，在初始浓度为5 mg/L时，几分钟内即可实现饱和吸附，这有利于快速过滤过程。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/aa0a468bf019/polymers-11-00780-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/e41d1cee2672/polymers-11-00780-g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/58d651fd3e79/polymers-11-00780-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/b40ea63fbf2f/polymers-11-00780-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/d125c4676d67/polymers-11-00780-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/2e8cea920f75/polymers-11-00780-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/02c004c5267f/polymers-11-00780-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/e0ff0ea0b04a/polymers-11-00780-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/8282b606aa27/polymers-11-00780-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/aa0a468bf019/polymers-11-00780-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/893ab91319cb/polymers-11-00780-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/53ac0c84bac7/polymers-11-00780-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/741b75e964c6/polymers-11-00780-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/e41d1cee2672/polymers-11-00780-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/88afe87126c9/polymers-11-00780-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/3c7a68d85b24/polymers-11-00780-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/58d651fd3e79/polymers-11-00780-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/b40ea63fbf2f/polymers-11-00780-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/d125c4676d67/polymers-11-00780-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/2e8cea920f75/polymers-11-00780-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/02c004c5267f/polymers-11-00780-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/e0ff0ea0b04a/polymers-11-00780-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/8282b606aa27/polymers-11-00780-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7278/6572502/aa0a468bf019/polymers-11-00780-g014.jpg

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通过表面引发原子转移自由基聚合对再生纤维素膜进行功能化，用于从水溶液中去除硼。
Langmuir. 2011 May 17;27(10):6018-25. doi: 10.1021/la200154y. Epub 2011 Apr 21.