Structural investigation of polydimethylsiloxane-vanadate hybrid materials

Journal of Materials Chemistry

Volumn 10, Issue 2, 2000, Pages 377-386

  Alonso, Bruno ^a   Sanchez, Clément ^a  

^a UNIVERSITÉ PIERRE ET MARIE CURIE   (France)

Author keywords

[No Author keywords available]

Indexed keywords

COPOLYMER; DIMETICONE; VANADIC ACID;

ARTICLE; CROSS LINKING; DEGRADATION; DISSOLUTION; GEL; INFRARED SPECTROSCOPY; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; RAMAN SPECTROMETRY; STRUCTURE ANALYSIS; THERMOGRAVIMETRY;

EID: 0033981813     PISSN: 09599428     EISSN: None     Source Type: Journal    
DOI: 10.1039/a908032e     Document Type: Article

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84. 1 units linked to one ethoxy or hydroxy group are expected to give residual thin signals. Another possibility could be a DMS unit linked to two vanadate units. The corresponding signal would have a different chemical shift from that of DMS units linked to one vanadate unit. This assignment seems to be unlikely as it would imply a vanadium-to-silicon molar ratio of >0.3.
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97. 61 B. Alonso and C. Sanchez, manuscript in preparation.
98. 62 In a homogeneous gel, the average number 'n' of DMS units in a segment linked to metallate units is related to the functionality 'f of these units and their relative ratio to silicon 'r' by the simple formula n = 2lfr.