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Gel template leaching: An approach to functional nanoporous membranes
Author(s) -
Gankema Harold,
Hempenius Mark A.,
Möller Martin,
Johansson Gary,
Percec Virgil
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961020145
Subject(s) - nanoporous , leaching (pedology) , ionic bonding , materials science , membrane , chemical engineering , covalent bond , curing (chemistry) , solvent , polymer chemistry , nanotechnology , chemistry , organic chemistry , ion , biochemistry , environmental science , soil science , engineering , soil water
A novel preparation method for nanoporous structures, denoted “Gel Template Leaching”, is described. The approach is based on the gelation of solutions containing two low molecular weight compounds of which one is crystallizable and the other curable. Gelation of the solute upon cooling followed by curing of the solvent below the gelation temperature lead to the formation of a semi‐IPN consisting of a reversibly and a covalently crosslinked network. After leaching of the solute (the template) a well‐defined nanoporous architecture was formed. Functional pores could be obtained after charging the pore walls with ionic sites.