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Stabilized dispersions of titania nanoparticles via a sol–gel process and applications in UV‐curable hybrid systems
Author(s) -
Zhang Xiahong,
Yang Jianwen,
Zeng Zhaohua,
Huang Liang,
Chen Yonglie,
Wang Haihua
Publication year - 2006
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2000
Subject(s) - materials science , acetylacetone , titanate , sol gel , hybrid material , chemical engineering , phosphoric acid , nanoparticle , dispersion (optics) , particle size , isopropyl , particle (ecology) , ceramic , composite material , nanotechnology , organic chemistry , chemistry , physics , oceanography , optics , geology , engineering , metallurgy
Organic–inorganic hybrid UV‐curable coatings were synthesized through blending UV‐curable components and stabilized titania sol prepared via a sol–gel process of tetrabutyl titanate (TBT) with three different stabilizers, acetylacetone (Acac), isopropyl tri(dioctyl)pyrophosphato titanate coupling agent (TTPO) and a polymerizable organic phosphoric acid (MAP). The size and the dispersion of titania particle in the UV‐cured organic matrix were dominated by the properties of these stabilizers. A cured hybrid film with titania particle size around 20 nm was obtained when TTPO was utilized as protection agent for the sol. It is interesting that the hardness and flexibility of the photocured hybrid films were improved simultaneously, in contrast to results with neat organic UV‐curable formulations. Copyright © 2006 Society of Chemical Industry