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Grafting of alumina by diphenylphosphinate coupling agents

Published online by Cambridge University Press:  01 February 2011

Gilles Guerrero ,
Gérald Chaplais ,
P. Hubert Mutin ,
Jean Le Bideau ,
Dominique Leclercq  and
André Vioux
Gilles Guerrero
Affiliation:
UMR CNRS 5637, cc 007, Université Montpellier 2, Place E. Bataillon, F34095 Montpellier Cedex 5 (FRANCE).
Gérald Chaplais
Affiliation:
UMR CNRS 5637, cc 007, Université Montpellier 2, Place E. Bataillon, F34095 Montpellier Cedex 5 (FRANCE).
P. Hubert Mutin
Affiliation:
UMR CNRS 5637, cc 007, Université Montpellier 2, Place E. Bataillon, F34095 Montpellier Cedex 5 (FRANCE).
Jean Le Bideau
Affiliation:
UMR CNRS 5637, cc 007, Université Montpellier 2, Place E. Bataillon, F34095 Montpellier Cedex 5 (FRANCE).
Dominique Leclercq
Affiliation:
UMR CNRS 5637, cc 007, Université Montpellier 2, Place E. Bataillon, F34095 Montpellier Cedex 5 (FRANCE).
André Vioux
Affiliation:
UMR CNRS 5637, cc 007, Université Montpellier 2, Place E. Bataillon, F34095 Montpellier Cedex 5 (FRANCE).
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Abstract

Alumina particles were treated under various conditions with different diphenylphosphinate compounds: diphenylphosphinic acid, ethyl diphenylphosphinate, and trimethylsilyl diphenylphosphinate. The balance between surface complexation (namely grafting) and surface phase transformation (formation of bulk aluminum phosphinate phase) was investigated by IR and solid-state 31P MAS NMR spectroscopy, using the model crystalline phase Al(O2PPh2)3 synthesized in a parallel work as a reference. Satisfactory grafting was obtained either by using diphenylphosphinic acid in aqueous medium at pH about 6, or by using ethyl diphenylphosphinate in organic medium as coupling agents.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 628: Symposium CC – Hybrid Organic/Inorganic Materials , 2000 , CC6.6
Copyright
Copyright © Materials Research Society 2000

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References

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