NDLI: Synthesis and characterization of trialkoxysilane-capped poly(methyl methacrylate)

Content Provider	Royal Society of Chemistry (RSC)
Author	Lin, Jen-Lien Lee, Long-Hua Lee, Shu-Jen Chen, Wen-Chang
Copyright Year	1999
Abstract	A series of trialkoxysilane-capped PMMA–titania hybrid optical thin films has been prepared by an in situ sol–gel process combined with spin coating and multi-step baking. The used acrylic monomers were methyl methacrylate (MMA) and 3-(trimethoxysilyl)propyl methacrylate (MSMA). Titanium(IV) n-butoxide was used for the preparation of the titania network. FTIR results indicate successful bonding between the organic and inorganic moieties. A DSC study suggests a good dispersion of the PMMA segment in the titania network while an AFM study suggests that the prepared hybrid thin films have superior smoothness in comparison to the parent titania thin film. The dispersion of the refractive index and extinction coefficient in the wavelength range 190–900 nm was studied. Variation of the titania content not only tunes the refractive index but also the position of absorption maximum. Off-resonant refractive indices of the prepared hybrid thin films were in the range 1.505–1.553, which linearly increased with the titania content. Furthermore, the hybrid polymer films have abbe numbers (ν) all >30. The shift of the absorption maximum of the prepared hybrid thin films can be correlated with the titania content. The prepared hybrid films show very high optical transparency in the visible region. These results suggest that such hybrid films have potential applications for optical devices.
Starting Page	2999
Ending Page	3003
Page Count	5
File Format	PDF
ISSN	09599428
Volume Number	9
Issue Number	12
Journal	Journal of Materials Chemistry
DOI	10.1039/a906157f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	MMA DSC Sol\u2013gel process Spin coating Methyl methacrylate Dispersion relation Para-Methoxy-N-methylamphetamine Refractive index Wavelength Polymer
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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