Polyamide thin-film composite membrane on polyethylene porous membrane: Fabrication, characterization and application in water treatment

•TA-APTES coating was co-deposited on the surface of PE microporous membrane.•The modified PE membrane was used as a support for fabrication of PA TFC membrane.•PA TFC membrane shows an efficient separation of dye and salt in FO and NF process.•PA TFC membrane has good mechanical properties and resi...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2021-03, Vol.287, p.129270, Article 129270
Main Authors: Li, Qiao-Mei, Ma, Hou-Ying, Hu, Yi-Ning, Guo, Yan-Feng, Zhu, Li-Jing, Zeng, Zhi-Xiang, Wang, Gang
Format: Article
Language:English
Subjects:
Aminopropyltriethoxysilane
Corrosion resistance
Forward osmosis
Lithium batteries
Materials science
Membranes
Nanofiltration
Osmosis
Phase separation
Polyamide resins
Polyethylene
Polyethylene membrane
Polyethylenes
Polymeric composites
Porosity
Porous materials
Thin films
Ultrafiltration
Water purification
Water treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•TA-APTES coating was co-deposited on the surface of PE microporous membrane.•The modified PE membrane was used as a support for fabrication of PA TFC membrane.•PA TFC membrane shows an efficient separation of dye and salt in FO and NF process.•PA TFC membrane has good mechanical properties and resistance to organic solvents. The ultrafiltration membranes fabricated by the non-solvent induced phase separation (NIPS) have been widely used as the supports of the polyamide thin film composite (PA TFC) membranes, although they are usually thick, low porosity, and poor chemical stability. Instead, thin polyethylene (PE) lithium battery microporous membrane with high surface porosity and connected pores is used as the support layer. PE membrane was pre-modified by the co-deposition of tannin and 3-aminopropyltriethoxysilane improving its hydrophilicity, and then a uniform and defect-free PA active layer was successfully fabricated by interfacial polymerization. The resultant membrane exhibited high filtration performances in the forward osmosis (FO) process (2 times higher water flux and 90% lower specific salt flux than the commercial HTI-TFC membrane), and efficient separation of NaCl and dyes in nanofiltration (NF) process, outstanding chemical stability and mechanical strength.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2020.129270