膜科学与技术

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Effect of PEG-b-PCL block copolymer on the structure and properties of polyamide membrane

Authors： Hu Lijie， Liang Songmiao，Yao Yan

Units： Vontron Technology Co., Ltd., Guizhou Guiyang, 550018, China

KeyWords： breathing pattern; interfacial polymerization; block copolymer; honeycomb structure; solvent resistance

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2021,41(3):68-76

Abstract：

Polyamide（PA）membranes were prepared by regulating diffusion rate of amine monomer with the method of the breathing pattern method and the interfacial polymerization. Moreover, the effect of PEG-b-PCL on membranes structure and performance was studied. The results showed that PA membranes with ordered honeycomb structure were prepared by changing the diffusion rate of amine during the interfacial polymerization. The thickness and pore size of PA membranes are about 60 nm and 1.2 μm, respectively. Furthermore, Molecular Weight Cut Off (MWCO) of PA membranes is 373 g/mol and the swelling degree of membranes is about 7%, in addition, the permeability coefficient is kept 3.7 L/m2·h·bar when operation time and operation pressure of membranes was 48h and 25bar, respectively. In a word, PA membranes have showed well organic-resistant and pressure- resistant properties.

Funds：

国家重点研发计划项目（2017YFC0403900）；国家重点研发计划项目（2016YFE0118800）

AuthorIntro：

胡利杰(1985- )女，河南新乡人，高级工程师，主要从事水处理膜材料的研究与产业化

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