Preparation and properties of triethoxyvinylsilane-modified styrene-butyl acrylate emulsion copolymers
The copolymers of triethoxyvinylsilane (TEVS) with styrene (St), butyl acrylate (BA), and methacrylic acid (MAA) were prepared by emulsion polymerization. The copolymerization was carried out by using auxiliary agents at 90 ◦C in the presence of potassium peroxodisulfate (KPS) as the initi...
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Published in | Turkish journal of chemistry Vol. 31; no. 3; pp. 257 - 269 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
TÜBİTAK
01.06.2007
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Online Access | Get full text |
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Summary: | The copolymers of triethoxyvinylsilane (TEVS) with styrene (St), butyl acrylate (BA), and methacrylic
acid (MAA) were prepared by emulsion polymerization. The copolymerization was carried out by using
auxiliary agents at 90 ◦C in the presence of potassium peroxodisulfate (KPS) as the initiator. Nonylphenol
ethylene oxide - 40 units (NP-40) and sodium lauryl sulfoacetate (SLSA) were used as nonionic
and anionic emulsifiers, respectively. The resulting copolymers were characterized by Fourier transform
infrared spectroscopy (FTIR). Thermal properties of the copolymers were studied by thermogravimetric
analysis (TGA) and differential scanning calorimetry (DSC). The morphology of copolymers was also
investigated by optical microscopy (OM) and then the effects of temperature, agitation speed, initiator
and silicone concentrations on the properties of the silicone-containing St/BA/MAA emulsion copolymers
were discussed. The obtained copolymers have high solid content (50%) and can be used in emulsion
paints as a binder.
The monomer conversion and monomer conversion versus time histories indicate that by increasing
the TEVS concentration the polymerization rate decreases. |
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Bibliography: | TMUH |
ISSN: | 1300-0527 1303-6130 |