Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 343, Issue 1, Pages 18-24Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.11.022
Keywords
Ps/TiO2; Nanocomposite particles; Miniemulsion polymerization
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Funding
- Shanghai Chenguang Scholar Foundation [2007CG01]
- A Foundation for the Author of National Excellent Doctoral Dissertation of PR China, Natural Science Foundation of Shanghai [08ZR1400600]
- Shanghai-Unilever Research and Development Fund [07SU07001]
- Shanghai Leading Academic Discipline Project [B113]
- Shanghai Excellent Leader of Academic Discipline Project
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This paper presents a one-step method to fabricate Ps/TiO2 nanocomposite particles via miniemulsion polymerization technique. In this approach, styrene (St) and acetylacetone (Acac) chelated tetra-n-butyl titanate (TBT) were confined in the miniemulsion droplets with the aid of cationic surfactant cetyl tri-methyl ammonium bromide (CTAB) and co-stabilizer hexadecane (HD). During the polymerization of St, TBT diffused towards the surface of the miniemulsion droplets owing to its hydrophilicity and yielded TiO2 particles via a sot-gel process. With the electrostatic interaction between the positively charged CTAB and negatively charged Ti-OH, TiO2 particles were coated onto the PS cores to form PS/TiO2 nanocomposite particles. (C) 2009 Elsevier Inc. All rights reserved.
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