Membrane composites derived from porous versus nonporous surfactants. Evidence for uniqueness of calix[6]arene-based surfactants

Journal Article · Wed Jun 28 00:00:00 EDT 1995 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja00130a025· OSTI ID:81317

Lee, W; Hendel, R A; Dedek, P; Janout, V; Regen, S L ^[1]

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1. 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, Vol. 117, Issue 25; Other Information: PBD: 28 Jun 1995
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
36 MATERIALS SCIENCE
COMPOSITE MATERIALS
PERMEABILITY
SURFACTANTS
ADSORPTION ISOTHERMS
POLYMERS
MEMBRANES