Journal of Sol-Gel Science and Technology

, Volume 33, Issue 1, pp 39–45

Inorganic-Organic Hybrid Polymers from the Polymerisation of Methacrylate-Substituted Oxotantalum Clusters with Methylmethacrylate: A Thermomechanical and Spectroscopic Study

  • Angelika Basch
  • Silvia Gross
  • Namita Roy Choudhury
  • Janis Matisons
Article

Abstract

New inorganic-organic hybrid materials were prepared by free-radical polymerization of methyl methacrylate (MMA) with methacrylate-substituted oxotantalum cluster [Ta4O4(OEt)8(OMc)4] and their properties evaluated. The cluster was prepared by the reaction of the parent alkoxide with methacrylic acid. Samples of the hybrid materials were produced with Ta-cluster to methyl methacrylate in the ratios of 1:50 and 1:100 and were characterized by thermal and spectroscopic techniques. The glass transition temperatures of the hybrid materials are shifted to higher temperatures than pure PMMA as a result of cross-linking of the polymer by the oxotantalum clusters. The increase in Tg is also observed from the dynamic mechanical analysis (DMA). Evidence of crosslinking between the Ta-cluster and PMMA is obtained from infrared spectroscopic study. Surface studies performed by X-ray photoelectron spectroscopy (XPS) provide information about the atomic concentrations of the surface and indicate tantalum bonded to oxygen.

Keywords

hybrid oxotantalum cluster polymer thermal analysis cross linking 

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Angelika Basch
    • 1
  • Silvia Gross
    • 2
  • Namita Roy Choudhury
    • 1
  • Janis Matisons
    • 1
    • 3
  1. 1.Ian Wark Research InstituteUniversity of South AustraliaAustralia
  2. 2.Institute of Molecular Science and Technology-CNR, Department of Chemical ScienceUniversity of PadovaPadovaItaly
  3. 3.Flinders University

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