Estimation of monomer content in polymethyl methacrylate contact lens materials by Raman spectroscopy.
Int J Artif Organs
; 20(7): 407-11, 1997 Jul.
Article
en En
| MEDLINE
| ID: mdl-9298414
Polymethyl methacrylate is the most commonly used contact lens material due to its excellent optical properties. However the presence of residual monomer in the structure alters its transparency as well as its biocompatibility, thus, there is a need to detect any remaining methyl methacrylate. Raman spectroscopy is a rapid, sensitive, and non destructive method as compared to other spectroscopic, chromatographic or polarographic methods. In this study, the spectra of some lens materials (prepared from methyl methacrylate, 2-hydroxy ethyl methacrylate, Hexamethyl disiloxane and polypropylene glycol with or without the addition of crosslinker ethylene glycol dimethylacrylate) were obtained by Raman spectroscopy. It was observed that an amount of crosslinker present in the structure proves effective for the unpolymerized monomer content. None of the samples, except those containing nexamethyl disiloxane, demonstrated any monomer residue.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Materiales Biocompatibles
/
Lentes de Contacto Hidrofílicos
/
Polimetil Metacrilato
/
Metilmetacrilatos
Idioma:
En
Revista:
Int J Artif Organs
Año:
1997
Tipo del documento:
Article
País de afiliación:
Turquía
Pais de publicación:
Estados Unidos