Abstract
ABSTRACTThe film‐forming polyacrylate/silica core–shell nanocomposite particles with octamethylcyclotetrasiloxane (D4) were successfully synthesized via aqueous emulsion polymerization in the presence of a glycerol‐functionalized nano silica sol. The ring‐opening polymerization of D4 and the reaction with the glycerol‐functionalized nano silica particles before emulsion polymerization was the key procedure in this process. Transmission electron microscopy results showed that more nano silica particles tended to coat on the polyacrylate particles surface after the nano silica sols were modified with D4. The silica aggregation efficiency was increased from 90.9 to 98.6% when the amount of D4 used in the system was varied from 0 to 8.0 wt %. The transparency of the nanocomposite films was not compromised after D4 was incorporated into the system. The films of the nanocomposite particles with or without D4 both exhibited superior abrasive resistance. Furthermore, the water resistance and hydrophobicity of the films of these particles with D4 were also improved significantly. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42003.
Published Version
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