期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 53, 期 9, 页码 615-620出版社
WILEY
DOI: 10.1002/polb.23688
关键词
fibers; fibrous nanoparticle network; membranes; nanoparticles; nanoprecipitation; phase separation; polymer nanoparticles; separation techniques; ultrafiltration membranes
资金
- Japan Science and Technology Agency, CREST program
- Ministry of Education, Culture, Sports, Science and Technology of Japan [23350105, 23685052]
- Grants-in-Aid for Scientific Research [23350105, 25708035, 26410230, 23685052] Funding Source: KAKEN
Polymer nanoparticles are readily obtainable by rapidly mixing a dilute polymer solution and a poor solvent. The nanoparticles of poly(vinylphenol), poly(vinylidene fluoride), and emeraldine base polyaniline prepared by nanoprecipitation become sticky when their diameters decrease down to a few tens of nanometers, and such polymer nanoparticles spontaneously assemble into rigid fractal networks of the nanoparticles. By filtering these fibrous nanoparticle networks on a microfiltration membrane, ultrafiltration membranes with a thin free-standing filter cake layer made of nanoparticles are obtainable. The nanoparticle membranes are robust at least up to the applied pressure of 2 MPa and can separate 99% of 10 nm Au nanoparticles from the aqueous dispersion at the flux of more than 1835 L m(-2) h(-1) even at very low pressure difference of 0.08 MPa. (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 615-620
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