Effect of binder addition on the properties of unsupported γ-Al2O3 membranes

Unsupported gamma-Al2O3 membranes prepared by the sol-gel method were characterised to determine the effect of the addition of binders including polyethylene glycol and polyvinyl alcohol. The sol-gel method involved the peptisation of a boehmite (AlOOH) sol prepared from aluminium sec- butoxide. The...

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Bibliographic Details
Published in:	Materials letters Vol. 38; no. 2; pp. 145 - 149
Main Authors:	LAMBERT, C. K, GONZALEZ, R. D
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier 1999
Subjects:	Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Membranes Porous membrane Thermogravimetry Cracking Mechanical properties Aluminium Hydroxides oxides Experimental study Binders Physical properties Oxide ceramics Characterization Ethylene oxide polymer Polyvinylalcohol Gamma form Additive Pore size Sol gel process Preparation Surface properties Thermal analysis Porosity Surface area Microstructure Alumina Inorganic membrane
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Summary:	Unsupported gamma-Al2O3 membranes prepared by the sol-gel method were characterised to determine the effect of the addition of binders including polyethylene glycol and polyvinyl alcohol. The sol-gel method involved the peptisation of a boehmite (AlOOH) sol prepared from aluminium sec- butoxide. The effect of the binder on surface area, pore size, and pore volume was studied, as well as the amount of crack formation during drying of the membranes. 13 refs.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(98)00149-9