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Synthesis of silica hybrid nanoparticles modified with photofunctional polymers and construction of colloidal crystals
Author(s) -
Ishizu Koji,
Tokuno Yoko,
Lee Dong Hoon,
Uchida Satoshi,
Ozawa Masaaki
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29815
Subject(s) - silanol , silane , methacrylate , materials science , polymer chemistry , polymer , methyl methacrylate , nanocomposite , chemical engineering , nanoparticle , surface modification , copolymer , colloidal silica , covalent bond , grafting , chemistry , organic chemistry , nanotechnology , composite material , catalysis , coating , engineering
Photofunctional polymer as silane coupling agent (PFD) was prepared by free radical copolymerization of 4‐vinylbenzyl N,N‐ diethyldithiocarbamate (VBDC) and methyl methacrylate (MMA) in the presence of (3‐mercaptopropyl)trimethoxysilane (MPMS) as chain transfer agent. Next, silane (SiO 2 ; the average diameter D n = 192 nm) nanoparticles was surface‐modified with PFD and 3‐(trimethoxysilyl)propyl methacrylate (γ‐MPS) by covalent bond formed between silanol groups and silane coupling agents. The PFD and γ‐MPS functionalizations changed the silica surface into hydrophobic nature and provided grafting initiation sites and methacrylate terminal groups respectively. We performed the construction of hybrid nanocomposites by using these modified SiO 2 nanoparticles. It was found from electron microscopy observations that SiO 2 particles were packed into repeating cubic arrangements in a poly(methyl methacrylate) (PMMA) matrix such as colloidal crystals. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009