Facile preparation of a crosslinked hydrophilic UHMWPE membrane

Ultra high molecular weight polyethylene (UHMWPE) filters are widely used in water treatment. In the present work, a facile crosslinking technique is first applied to a UHMWPE flat membrane as a model to realize long‐lasting hydrophilicity and improved water treatment efficiency. In the presence of...

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Bibliographic Details
Published in:Journal of applied polymer science 2020-06, Vol.137 (24), p.n/a
Main Authors: Fei, Zhengdong, Ying, Songsong, Fan, Ping, Chen, Feng, Haque, Enamul, Zhong, Mingqiang
Format: Article
Language:English
Subjects:
applications
Contact angle
Crosslinking
Fluid filters
High temperature
Hydrophilicity
Materials science
Membranes
Methylene bisacrylamide
Polyhydroxyethyl methacrylate
Polymers
porous materials
Sintering
Sludge
surfaces and interfaces
Ultra high molecular weight polyethylene
Water purification
Water treatment
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Summary:Ultra high molecular weight polyethylene (UHMWPE) filters are widely used in water treatment. In the present work, a facile crosslinking technique is first applied to a UHMWPE flat membrane as a model to realize long‐lasting hydrophilicity and improved water treatment efficiency. In the presence of a crosslinker, N, N′‐methylene bisacrylamide (MBA), 2‐hydroxyethyl methacrylate (HEMA), a hydrophilic modifier, is soaked into the surface of UHMWPE particles by blending. Then, a crosslinking reaction occurs during the initial sintering stage. Finally, sintering is completed at high temperature and pressure. The FTIR and SEM results show that HEMA is successfully crosslinked on the UHMWPE particle surface. Compared to a pristine membrane, the crosslinked UHMWPE flat membrane presents a lower water contact angle and is more rapidly penetrated by water. As a result, the crosslinked membrane can realize pressureless filtration. Another meaningful result is that the water flux recovery rate (FRR) is extremely high both for BSA and sludge filtration tests. Also a parameter K of 1 was obtained to represent the efficiency of the membrane treatment of water under pressureless conditions. These findings demonstrate that the crosslinking strategy is an effective method for realizing long‐lasting hydrophilicity and is very promising for UHMWPE filters and other engineering applications.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.49015