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Poly(Methyl Methacrylate)-Titania Hybrid Materials by Sol-Gel Processing

Published online by Cambridge University Press:  10 February 2011

Jun Zhang ,
Shengcheng Luo ,
Linlin Gui  and
Youqi Tang
Jun Zhang
Affiliation:
Institute of Physical Chemistry, Peking University, Beijing 100871, P.R.China
Shengcheng Luo
Affiliation:
Institute of Physical Chemistry, Peking University, Beijing 100871, P.R.China
Linlin Gui
Affiliation:
Institute of Physical Chemistry, Peking University, Beijing 100871, P.R.China
Youqi Tang
Affiliation:
Institute of Physical Chemistry, Peking University, Beijing 100871, P.R.China
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Abstract

Sol-gel derived Poly(methyl methacrylate)-titania hybrid materials were synthesized by using acrylic acid or allyl acetylacetone (3-allyl-2,4-pentanedione) as coupling agents. Titanium butoxide modified with acrylic acid (or titanium isopropoxide modified with allyl acetylacetone) was hydrolyzed to produce a titania network, and then poly (methyl methacrylate) (PMMA) chains formed in situ through a radical polymerization were chemically bonded to the forming titania network to synthesize a hybrid material. Transparent hybrid materials with different contents of titania were achieved. With the increase of the titania content, the colors of the products changed from yellow to dark red. The synthesis process was investigated step by step by using FTIR spectroscopy, and the experimental results demonstrated that acrylate or acetylacetonato groups bound to titanium remain in the final hybrid materials. The thermal stability of the hybrid materials was considerably improved relative to pure PMMA. Field emission scanning electron microscopy (FE-SEM) analyses showed the hybrid materials are porous and pore diameters vary from 1 Onm to I 00nm. The hybrid materials using allyl acetylacetone as the coupling agent exhibited thermochromic effects that both pure PMMA and titania do not have.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996 , 173
Copyright
Copyright © Materials Research Society 1996

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