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Surface Functionalization of Silica with 2-Vinylfuran by Cationic Polymerization

✍ Scribed by Susanne Höhne; Stefan Spange

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
295 KB
Volume
204
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Cationic surface polymerization of 2‐vinylfuran with chlorotriphenylmethane as initiator has been used for the functionalization of silica particles. The influence of monomer/initiator ratio and temperature on grafting efficiency, yield, and degree of grafting has been investigated. Grafting efficiency is a significant function of temperature and monomer/initiator ratio, because crosslinking reactions between cationically active chains increases the amount of the immobilized polyvinylfuran fraction. Thus, larger initiator concentrations on the silica cause higher polymer content on the surface. Polymer structure elucidation and surface properties are analyzed by means of solid‐state NMR spectroscopy, UV‐vis spectroscopy, BET – measurements, and scanning electron microscopy.
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The cationic polymerization of 2-vinylfuran on the surface of silica particles – an NMR spectroscopic study
✍ Stefan Spange; Susanne Höhne; Volkhard Francke; Harald Günther 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 128 KB 👁 2 views

The cationic polymerization of 2-vinylfuran initiated with triphenylmethyl chloride in conjunction with silica nanoparticles in suspension yields poly(2-vinylfuran)/silica hybrid particles and a soluble fraction of oligo(2-vinylfuran). 2-Vinylfuran cationically is polymerized via both the vinyl doub

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Cationic Polymerization of 2-Vinylthiophene by Chloroarylmethanes as Surface Initiators on Silica and Consecutive Hydride Abstraction by Acceptors
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## Abstract **Summary:** 2‐Vinylthiophene (2‐VT) has been cationically polymerized using chloroarylmethane derivatives as the surface polymerization initiator on silica. By applying this procedure a soluble fraction of poly(vinylthiophene) (PVT) and PVT/silica composites can be simultaneously synth