Hostname: page-component-7c8c6479df-xxrs7 Total loading time: 0 Render date: 2024-03-28T20:35:52.968Z Has data issue: false hasContentIssue false

Synthesis and Properties of Poly(Vinyl Alcohol)/Calcium Aluminate Nanocomposites

Published online by Cambridge University Press:  15 February 2011

Phillip B. Messersmith
Affiliation:
University of Illinois, Department of Materials Science and Engineering, 1304 W. Green St., Urbana, IL 61801.
Samuel I. Stupp
Affiliation:
University of Illinois, Department of Materials Science and Engineering, 1304 W. Green St., Urbana, IL 61801.
Get access

Abstract

This paper describes the synthesis, structure and properties of a new layered nanocomposite which may have applications in cementitious systems. This material is one example of a new class of materials which consist of inorganic crystals containing intercalated organic polymer. The nanocomposite is synthesized by precipitating Ca2Al(OH)6[X]·nH2O (X=OH, CO3−2) in the presence of poly(vinyl alcohol) (PVA). X-ray diffraction analysis indicates that the nanocomposite consists of calcium aluminate layers separated by interlayers containing anions, water and PVA. The intercalation of PVA can only be accomplished during crystal growth and is accompanied by an expansion in layer spacing from ˜8 Å to ˜18 Å. The nanocomposite exhibited enhanced thermal stability and when compacted into a cylinder was found to have more than twice the compressive strength than the pure calcium aluminate.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Carlson, E.T., J. Research NBS 61, 111 (1958).Google Scholar
2. Messersmith, P. and Stupp, S., “Synthesis of Nanocomposites: Organoceramics”, submitted for publication.Google Scholar
3. Miyata, S., Clays and Clay Minerals, 23, 369375(1975).10.1346/CCMN.1975.0230508Google Scholar
4. Dosch, W., Clays and Clay Minerals, Proc. 15th Conference, 273292(1966).10.1346/CCMN.1967.0150132Google Scholar
5. Dosch, W., N. Jb. Miner Abh. 106 200239 (1967).Google Scholar
6. Pimentel, G.C. and McClellan, A.L., The Hydrogen Bond(Reinhold, New York, 1960), p. 271.Google Scholar
7. Sacerdoti, M. and Passaglia, E., N. Jb. Miner. Mh. 1988, 462475 (1988).Google Scholar
8. Butler, F.G., Glasser, L.S. Dent and Taylor, H.F.W., J. Amer. Ceramic Soc. 42, 121126 (1959).10.1111/j.1151-2916.1959.tb14078.xGoogle Scholar