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Polymer Bulletin
Published in: Polymer Bulletin 3/2016

07-09-2015 | Original Paper

Grafting of hyperbranched polymer onto the nanosilica surface and their effect on the properties of UV-curable coatings

Authors: Jianbing Wu, Guozhang Ma, Lixia Ling, Baojun Wang

Published in: Polymer Bulletin | Issue 3/2016

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Abstract

The nanosilica is first treated with 3-mercaptopropyl trimethoxysilane (MPTMS) to introduce mercapto groups as growth points, and then hyperbranched polymer is grafted on the nanosilica surface via repeated step of thiol-ene click reaction between the acrylate double bond of trimethylolpropane triacrylate (TMPTA) and mercapto groups of trimethylolpropane tris 3-mercaptopropionate (Trithiol). FTIR results confirm that the grafting procedure is feasible, and TGA results indicate the grafting ratio is as high as 45.0 %. The curing kinetic, monitored by photo-DSC, shows that both terminal acrylate double bonds and mercapto groups can accelerate the curing speed of the UV-curing organic–inorganic hybrid coatings. The mechanical and physical properties of UV-curable hybrid coatings containing modified nanosilica at different generations are also investigated.
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Metadata
Title
Grafting of hyperbranched polymer onto the nanosilica surface and their effect on the properties of UV-curable coatings
Authors
Jianbing Wu
Guozhang Ma
Lixia Ling
Baojun Wang
Publication date
07-09-2015
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 3/2016
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-015-1523-0

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