Journal of Materials Science

, Volume 32, Issue 6, pp 1469–1472 | Cite as

Poly(methyl methacrylate)–titania hybrid materials by sol–gel processing



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 agent. Titanium butoxide modified with acrylic acid (or titanium isopropoxide modified with allyl acetylacetone) was hydrolysed 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 increase of the titania content, the colours of the products changed from yellow to dark red. The synthesis process was investigated step by step by using Fourier transform–infrared 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 analyses showed the hybrid materials are porous and pore diameters vary from 10–100 nm. The hybrid materials using allyl acetylacetone as coupling agent exhibited a thermochromic effect that neither pure PMMA nor titania exhibit.


PMMA Field Emission Scanning Electron Microscopy Acrylic Acid Hybrid Material Methyl Methacrylate 


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Copyright information

© Chapman and Hall 1997

Authors and Affiliations

    • 1
    • 1
    • 1
  1. 1.Institute of Physical ChemistryPeking UniversityBeijingPeople’s Republic of China

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