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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 2, 2011
Accepted January 16, 2012

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Preparation and characterization of ophthalmic polymers containing silicon nanoparticles

A-Young Sung^† Tae-Hun Kim¹

Department of Ophthalmic Optics, Sehan University, Jeonnam 526-702, Korea ¹Department of Visual Optics, Baekseok University, Chungnam 330-704, Korea

Korean Journal of Chemical Engineering, September 2012, 29(9),
10.1007/s11814-012-0002-7

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Abstract

HEMA, MMA, NVP, EDGMA, and 3-vinylanisole were copolymerized with Si nanoparticles and silicon 2,3-naphthalocyanine bis (trihexylsilyloxide) for ophthalmic application. The physical, optical, and surface characteristics of the contact lens copolymers were investigated to examine the usefulness of the above nanomaterials as components for contact lenses. The water content and the refractive index were in the range of 26.03-37.61% and 1.435-1.479, respectively. Meanwhile, the tensile strength ranging from 0.156 to 0.802 kgf increased with increasing the addition ratio of 3-vinylanisole. Si nanoparticles reduce spectral transmittance in all wavelengths, whereas for silicon 2,3-naphthalocyanine bis (trihexylsilyloxide) the transmittance of visual light increased but the transmittance of UV and near infrared decreased. High contact angle was observed for contact lenses containing both Si nanopowder and silicon 2,3-naphthalocyanine bis (trihexylsilyloxide). The water content of contact lenses was not significantly affected by the addition of 3-vinylanisole. Nanomaterials such as Si nanoparticles and silicon 2,3-naphthalocyanine bis (trihexylsilyloxide) can be used for manufacturing hydrogel soft contact lenses with UV-blocking capabilities if the intensity and the wettability of the surface are properly controlled.

Keywords

Silicon Nanoparticle 3-Vinylanisole Wettability Contact Angle Antimicrobial Property

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