Preparation of polystyrene grafted silica nanoparticles by two-steps UV induced reaction

Polystyrene grafted silica nanoparticles (PSSNs) were prepared by the followed two steps: methacryloxypropyl silica nanoparticles (MPSNs) were modified with the monomer-iniferter, 4-vinylbenzyl N, N-diethyldithiocarbamate (VBDC) under UV irradiation. Then the VBDC modified silica nanoparticles (VBDC...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2004-10, Vol.167 (2), p.237-240
Main Authors: Liu, Peng, Su, Zhixing
Format: Article
Language:English
Subjects:
Controlled/“living” radical polymerization
Monomer-iniferter
Polystyrene grafted silica nanoparticles
Surface-initiated
UV irradiation
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Summary:Polystyrene grafted silica nanoparticles (PSSNs) were prepared by the followed two steps: methacryloxypropyl silica nanoparticles (MPSNs) were modified with the monomer-iniferter, 4-vinylbenzyl N, N-diethyldithiocarbamate (VBDC) under UV irradiation. Then the VBDC modified silica nanoparticles (VBDCSNs) were used as iniferter for the surface-initiated (SI) controlled/“living” radical polymerization of styrene. A percentage of grafting (PG%) of 315.7% was achieved with a conversion of styrene of about 35% after 18 h UV irradiation.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2004.05.030