Membrane composites derived from porous versus nonporous surfactants. Evidence for uniqueness of calix[6]arene-based surfactants
- Lehigh Univ., Bethlehem, PA (United States)
In this paper we provide evidence for uniqueness of calix[6]arene surfactants as building blocks for the construction of permeation-selective composites. Specifically, we show that membranes made from poly[1-(trimethylsilyl)-1-propyne] (PTMSP) plus multilayers of calix[6]arene I exhibit significant permeation selectivity toward He and N{sub 2}, but that those based on arachidic acid (AA), cadmium arachidate (AA/Cd{sup 2+}), a polyion complex of AA plus poly(ethyleneimine) (AA-PEI), and stearamide oxime (SA) show no permeation selectivity and no alteration in the barrier properties of the support. We also report results of surface analyses of PTMSP/I and PTMSP/SA by X-ray photoelectron spectroscopy (XPS) that offer insight into the origin of these striking differences. 40 refs., 2 figs., 1 tab.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-85ER13403
- OSTI ID:
- 81317
- Journal Information:
- Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 25 Vol. 117; ISSN JACSAT; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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