TITLE:
Physical Properties of Ophthalmic Copolymers Containing Vinylaniline and ZnO Nanoparticles
AUTHORS:
A-Young Sung, Tae-Hun Kim
KEYWORDS:
ZnO Nanoparticles; Vinylaniline; Spectral Transmittances; Contact Angles
JOURNAL NAME:
Journal of Biomaterials and Nanobiotechnology,
Vol.4 No.4,
July
31,
2013
ABSTRACT: The mixture of vinylaniline and
2-hydroxyethyl mrthacrylate mixed according to the mixing ratio, was allowed to
stir in order to add functionality. ZnO nanoparticles, dispersed for approximately 1 hr in an ultrasonic
bench top cleaner, were added to the mixture of monomers. Then the mixture at a mould was
thermally polymerized to prepare high-performance hydrogel ophthalmic lens. The
produced ophthalmic hydrogel lens was then put in 0.9% NaCl (normal saline solution) for 24 hrs for hydration, and
various measurements were carried out. The surface analysis of ZnO
nanoparticles dispersed in the macromolecular polymer was conducted using AFM
(XE-100, Parks System). The produced hydrogel lens generally exhibited yellowish color, transparent and
hydrophilic characteristics. Also, the contact lenses hydrated in standard
saline solution generally exhibited the characteristics of flexibility and softness. The physical properties of
the ophthalmic hydrogel lens material were measured. The refractive indexes of 1.359-1.423, water content of 37%-43%, and visible transmittance of 74%-82% were obtained.