Synthesis and Characterization of Vinyl Polymer−Silica Colloidal Nanocomposites
By M. J. Percy, C. Barthet, J. Lobb, M. Khan, S. Lascelles, M. Vamvakaki, S. Armes. 2000
201 citations recorded by the source corpus.
Colloidal dispersions of polymer−silica nanocomposite particles were synthesized in high yield by homopolymerizing 4-vinylpyridine (4VP) in the presence of an ultrafine silica sol using a free-radical initiator in aqueous media at 60 °C. Copolymerization of 4VP with methyl methacrylate and styrene also produced colloidally stable nanocomposite particles, in some cases for comonomer feeds containing as little as 6 mol % 4VP. However, homopolymerization of styrene or methyl methacrylate in the presence of the silica sol did not produce nanocomposite particles in control experiments. Thus a strong acid−base interaction between the silica sol and the (co)polymer appears to be essential for nanocomposite formation. Transmission electron microscopy studies confirmed the presence of the ultrafine silica sols within the nanocomposite particles, which typically exhibited “currant-bun” particle morphologies. This is in contrast to the “raspberry” particle morphologies previously reported for conducting polymer−sili...
Subfields: Materials Chemistry, Organic Chemistry, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/71c10aed6a6469eeeeda1547f99480cf7c9c569a
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In Materials Chemistry
In Polymers and Plastics
- Jaroslav Stejskal
- Miroslava Trchová
- I. Sapurina
- I. Šeděnková
- G. Ćirić‐Marjanović
- Zuzana Morávková
- M. A. Shishov
- E. N. Konyushenko
Citations in the corpus
- Polyaniline nanostructures and the role of aniline oligomers in their formation (2010, background): “This concept explains the frequent “raspberry” morphology of colloidal particles [267,271].”