Journal
RSC ADVANCES
Volume 8, Issue 44, Pages 24690-24700Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra03934h
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Funding
- National Natural Science Foundation of China [21776205]
- Tianjin Research Program of Basic Research and Frontier Technology [15JCQNJC43400]
- Program of Introducing Talents of Discipline to Universities [B06006]
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Physical blending is a common technique to improve the water flux and antifouling performance of ultrafiltration (UF) membranes. In the present work, a novel hydrophilic and antimicrobial core-shell nanoparticle was synthesized through the chemical grafting of poly(guanidine-hexamethylenediamine-PEI) (poly(GHPEI)) on the surface of silica nanoparticles (SNP). The synthesized core-shell nanoparticles, poly(GHPEI) functionalized silica nanoparticles (SNP@PG), were incorporated into polyethersulfone (PES) to fabricate hybrid UF membranes by a phase inversion process. The chemical composition, surface and cross section morphologies, hydrophilicity, water flux and protein rejection of the membranes were evaluated by a series of characterizations. Results show that the prepared PES/SNP@PG hybrid membrane exhibits not only improved water flux, which is around 2.6 times that of the pristine PES membrane, but also excellent resistance to organic fouling and biofouling.
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