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Synthesis and characterization of fluorine‐containing polyacrylate latex with core–shell structure by UV‐initiated seeded emulsion polymerization
Author(s) -
Zang Limin,
Guo Jinshan,
Luo Jiahe,
Zhang Hong
Publication year - 2012
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1819
Subject(s) - materials science , emulsion polymerization , photoinitiator , emulsion , x ray photoelectron spectroscopy , thermogravimetry , polymerization , chemical engineering , fluorine , contact angle , dynamic light scattering , fourier transform infrared spectroscopy , polymer chemistry , polymer , composite material , monomer , nanoparticle , nanotechnology , engineering , metallurgy
A core–shell fluorine‐containing polyacrylate emulsion was successfully prepared by UV‐initiated seeded emulsion polymerization in two stages in the presence of two photoinitiators. The water‐soluble photoinitiator for the core polymerization and the oil‐soluble photoinitiator was used for the shell polymerization. Both of the two stage polymerizations could be completed within 15 min and displayed a conversion above 94%. The emulsion and the films were characterized by Fourier transformed infrared spectrometry, transmission electron microscopy, dynamic light scattering, X‐ray photoelectron spectroscopy (XPS), contact angle (CA), and thermogravimetry analysis, respectively. The analysis results indicated that the fluorine‐containing latex particles had very small particle size (40 nm) with a core–shell structure and a narrow particle size distribution. XPS analysis revealed that a gradient concentration of fluorine excited in fluorine‐containing emulsion film from the film–air interface to the film–glass interface. In addition, the film formed from the fluorine‐containing emulsion exhibited not only higher thermal stability but also better hydrophobicity than that of the fluorine‐free emulsion. Copyright © 2010 John Wiley & Sons, Ltd.