Research Article

Monitoring the synthesis of new polymer nanocomposites based on different polyhedral oligomeric silsesquioxanes using Raman spectroscopy

  1. Nicoleta Mihaela Sulca,
  2. Adriana Lungu,
  3. Sorina Alexandra Garea,
  4. Horia Iovu*

Article first published online: 29 APR 2009

DOI: 10.1002/jrs.2311

Issue

Journal of Raman Spectroscopy

Journal of Raman Spectroscopy

Volume 40, Issue 11, pages 1634–1640, November 2009

Additional Information

How to Cite

Sulca, N. M., Lungu, A., Garea, S. A. and Iovu, H. (2009), Monitoring the synthesis of new polymer nanocomposites based on different polyhedral oligomeric silsesquioxanes using Raman spectroscopy. J. Raman Spectrosc., 40: 1634–1640. doi: 10.1002/jrs.2311

Author Information

  1. University Politehnica of Bucharest, 149 Calea Victoriei, 010072, Bucharest, Romania

*University Politehnica of Bucharest, 149 Calea Victoriei, 010072, Bucharest, Romania.

Publication History

  1. Issue published online: 11 NOV 2009
  2. Article first published online: 29 APR 2009
  3. Manuscript Accepted: 16 MAR 2009
  4. Manuscript Received: 22 DEC 2008

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Keywords:

  • polyhedral oligomeric silsesquioxane;
  • dimethacrylates;
  • Raman spectroscopy;
  • XPS;
  • DMA

Abstract

The kinetic behavior of the urethane dimethacrylate (UDMA) copolymerized and reinforced by different concentrations of polyhedral oligomeric silsesquioxane (POSS) with methacrylic groups was studied through Raman spectroscopy. UDMA-POSS networks have been synthesized with three different types of POSS, two monofunctional POSS (1-propylmethacrylate)-heptaisobutyl substituted (HISO-POSS) and heptacyclopentyl-octasiloxan-1-yloxy) dimethylsilyl] propyl methacrylate (CPENTYL-POSS) and one octafunctional POSS-methacryl substituted (MA-POSS). In order to show the influence of POSS on the final conversion, the hybrid systems were cured using three types of initiators which decompose at different temperatures: azobisisobutyronitrile (AIBN) (65 °C), benzoyl peroxide (BP) (80 °C) and di-tert-butyl peroxide (DTBP) (120 °C). The structure of the hybrid's surface was investigated by X-ray photoelectron spectroscopy (XPS) and the Tg values were calculated from dynamic mechanical analysis (DMA) tests. Copyright © 2009 John Wiley & Sons, Ltd.

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