Chemistry Letters, Vol.35, No.6, 598-599, 2006
Photocontrol of zeta-potential of poly(styrene) microspheres prepared by soap-free emulsion copolymerization
Exposure to UV light at wavelengths of >= 254nm caused poly(styrene) microspheres in deionized water to exhibit a negatively shifted zeta-potential value by generation of carboxyl groups due to photooxidation. Their zeta-potential value could be tuned simply by an exposure dose without a change in their average diameter.