S. Sawamoto et al., Nanotechnological method to control pore diameter of organic-inorganic composite membrane Part II. Molecular-wise vapor polymerization (MVP), J MEMBR SCI, 174(2), 2000, pp. 151-159
Polyimide-alumina composite membranes were fabricated by the molecular-wise
vapor polymerization (MVP) technique of copolymer which has a constant rep
eating unit chemically bound by primer on the wall and/or surface of the po
rous ceramic support. By changing the flow rate of N-2 carrier gas and the
repeating number (n), the fabricated pyromellitic dianhydride (PMDA)-diamin
odiphenylether (ODA) composite membranes have separation factor alpha(CO2)/
(CH4) in the range 0.87-16.0. The estimation of pore diameter was carried o
ut by N-2 permeance and estimated pore diameter was controlled in the range
38-263 nm. (C) 2000 Elsevier Science B.V. All rights reserved.