Preparation and properties of vinylester resin/clay nanocomposites

Dipa Ray*, Suparna Sengupta, S. P. Sengupta, Amar K. Mohanty, Manjusri Misra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Vinylester resin matrix composites were fabricated with 1, 3, 5 and 10 wt.-% loadings of organoclay. The composite samples were subjected to various characterization techniques like X-ray diffraction, flexural testing, dynamic mechanical analysis, thermogravimetric analysis, and scanning electron microscopy. The clay samples as well as the clay-resin composites were investigated by X-ray diffraction. From the shift in the peak positions and the change in d-spacing values, it was evident that there was intercalation in the 10 wt.-% composites, whereas exfoliation occurred in the 1, 3, and 5 wt.-% composites. The flexural strength and the breaking energy of all the composites were decreased compared with the unfilled resin, but there was an increase in flexural modulus value by 13%. From the dynamic mechanical analysis of the 3 and the 5 wt.-% composites, it was observed that the loss modulus value was higher in the 3 wt.-% composites, but the glass transition temperature was slightly higher in the 5 wt.-% composites. Thermal degradation behavior was also improved in the 5 wt.-% composites compared with the 3 wt.-% composites.

Original languageEnglish
Pages (from-to)1513-1520
Number of pages8
JournalMacromolecular materials and engineering
Issue number12
Publication statusPublished - 8 Dec 2006

Keywords / Materials (for Non-textual outputs)

  • dynamic mechanical analysis
  • exfoliation
  • intercalation
  • polymer/clay nanocomposites
  • thermogravimetric analysis (TGA)


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