Structure and properties of cellulose and cellulose/guar blend membranes prepared from the n-methyl morpholine n-oxide/water solvent system
- State Univ. of New York, Syracuse, NY (United States)
This paper describes membranes of cellulose or its blends with guar gums. Their morphology, hydration behavior, mechanical properties and permselectivity are all dependent upon preparation conditions. Wet membranes exhibit decreased strength but increased elasticity with increasing guar content. Morphologies of the wet membranes range from microporous to macrovoids to systems of regularly arranged conduits and could be formed in a reproducible manner. Dry membranes were invariably dense. Both wet and dry membranes had markedly higher permeation rates for molecules with 400 < M < 4000 than similarly treated commercial cellulose dialysis membranes and the rates increased with increasing guar content. Dried membranes of either cellulose or the blends showed appreciable permselectivity in this same intermediate molecular weight range which disappeared with increasing guar content.
- OSTI ID:
- 126150
- Report Number(s):
- CONF-950402-; TRN: 95:006086-0123
- Resource Relation:
- Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.
- Country of Publication:
- United States
- Language:
- English
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