Properties and structure of PVDF membrane modified by Ag<sub>3</sub>PO<sub>4</sub> powders

ZHOU Jie; WEN Chen; WU Jiapeng; XIAO Changfa

doi:10.11949/j.issn.0438-1157.20140920

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Properties and structure of PVDF membrane modified by Ag₃PO₄ powders

更新时间：2025-12-10

- Properties and structure of PVDF membrane modified by Ag₃PO₄ powders
- CIESC Journal Issue 1, Pages: 471-477(2015)
- 作者机构：
  
  1. 天津工业大学环境与化学工程学院,天津,300387
  2. 膜材料与膜过程国家重点实验室培育基地,天津,300387
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20140920
  CLC： Q028.8
- Online First：05 January 2015，
  
  Published：05 January 2015
- 稿件说明：
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ZHOU Jie, WEN Chen, WU Jiapeng, et al. Properties and structure of PVDF membrane modified by Ag₃PO₄ powders[J]. CIESC Journal, 2015, (1): 471-477. DOI: 10.11949/j.issn.0438-1157.20140920.
DOI：

ZHOU Jie, WEN Chen, WU Jiapeng, et al. Properties and structure of PVDF membrane modified by Ag₃PO₄ powders[J]. CIESC Journal, 2015, (1): 471-477. DOI: 10.11949/j.issn.0438-1157.20140920. DOI：

摘要

将不同量Ag3PO4均匀地分散在聚偏氟乙烯(PVDF)铸膜液中

利用相转化法制备了改性PVDF膜

通过扫描电镜(SEM)、接触角测定、过滤实验和污染性测试等研究了其微结构、分离性和耐污染性等

并考察了膜污染后的清洗效果。结果表明

添加Ag3PO4 的PVDF膜具有不同的微结构与性能

当添加1% 的Ag3PO4时

膜皮层变薄、微孔数增多

并呈现出最优化的水通量、亲水性、力学性、抗污染能力和截留率等。采用太阳光-水清洗能使改性膜的通量恢复率达到85%以上。

Abstract

PVDF ultrafiltration membranes were prepared by the phase-inversion method with different contents Ag3PO4 powders dispersed uniformly in the PVDF casting solution. The microstructure

separation performance and antifouling ability of such PVDF membrane and modified membranes were investigated using SEM

contact angle

cross flow filtration

and antifouling measurements

and cleaning effect for the fouled membrane was also observed. The modified membranes exhibited differences in microstructure and properties due to a specific content of Ag3PO4 powders addition. At mass fraction 1% Ag3PO4

the thickness of skin layer decreased while fine interfacial micropores increased

meanwhile the modified membranes had excellent water permeability

hydrophilicity

mechanical properties

antifouling ability and elevated retention for humic acid (HA)solution. In addition

sunlight/water cleaning in aeration could effectively recover the flux of PVDF1 membrane to above 85%.

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Properties and structure of PVDF membrane modified by Ag3PO4 powders

DOI：10.11949/j.issn.0438-1157.20140920

摘要

Abstract

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Keywords

references

Properties and structure of PVDF membrane modified by Ag₃PO₄ powders