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Adsorption of Poly(vinyl butyral) in Nonaqueous Ferrite Suspensions

Published online by Cambridge University Press:  31 January 2011

Jau-Ho Jean ,
Shun-Fen Yeh  and
Chi-Jen Chen
Jau-Ho Jean
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
Shun-Fen Yeh
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
Chi-Jen Chen
Affiliation:
Materials Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan, Republic of China
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Abstract

The adsorption of poly(vinyl butyral) (PVB) on NiCuZn ferrite powder in binary solvent systems of 1-butanol and toluene has been investigated. The adsorption isotherms of different PVB's on ferrite powder from various solvent mixtures follow closely the Langmuir monolayer types and can be explained by adsorption competition between solvents and PVB. A relatively poor solvent for PVB increases its adsorption on ferrite powder and thus improves the dispersion of the powder in the nonaqueous suspension. The adsorbance of PVB increases with increasing hydroxyl content in PVB suggesting that PVB is bonding strongly to the protruding surface hydroxyl groups on ferrite powder.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 4 , April 1997 , pp. 1062 - 1068
Copyright
Copyright © Materials Research Society 1997

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