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From Particle‐Assisted Wetting to Thin Free‐Standing Porous Membranes
Author(s) -
Xu Hui,
Goedel Werner A.
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200351427
Subject(s) - membrane , wetting , materials science , porosity , mesoscopic physics , chemical engineering , particle (ecology) , layer (electronics) , porous medium , composite material , chemistry , biochemistry , physics , oceanography , quantum mechanics , engineering , geology
Puncturing polymer membranes : Non‐wetting organic liquids (see scheme; red) can form a mesoscopic wetting layer on a water surface (light blue), if they are mixed with suitable particles (dark blue). Photochemical cross‐linking of the liquid in the mixed layer and transfer to metal grids or porous supports produces composite membranes. Subsequent removal of the particles yields free‐standing porous membranes with uniform pore size and high porosity (see scheme).