Influence of nanofillers on the properties of siloxane elastomers

Darko Manjencic, Jani Seitsonen, Tanja Radusin, Nevena Vukic, Jaroslava Budinski-Simendic, Jelena Cakic, Ivan S. Ristic*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

In this study, the influence of nanosilicon(IV)-oxide (with hydrophobic and hydrophilic functionalized surfaces) on the properties of siloxane elastomers was studied. The elastomers were prepared from vinyl and hydrogen oligosiloxanes, while the nanocomposites were obtained by addition of nanofillers at different concentrations (1, 5, 10 and 20 wt%). The chemical structure of the obtained materials was analyzed by Fourier transform infrared spectroscopy. Transmission electron microscopy confirmed good dispersion of the hydrophobic filler within the polymer matrix, while the hydrophilic filler formed a net on the siloxane sample. Type of the filler modification did not affect hardness of the siloxane hybrid materials, while the samples with the highest content of hydrophobic nanosilica have shown the highest value of tensile strength. Influence of the nanosilica type on thermal degradation of elastomeric materials was investigated by using thermogravimetric analysis, while the influence of the fillers on the phase transition temperature was analyzed by differential scanning calorimetry. Lower compatibility of the hydrophobic matrix and hydrophilic filler caused a decrease in the crystalline melting temperature with the lowest value determined for the sample with the highest filler loading. Increase in the nanofiller content resulted in the improved thermal stability of the obtained hybrid materials.

Original languageEnglish
Pages (from-to)132-145
Number of pages14
JournalHEMIJSKA INDUSTRIJA
Volume74
Issue number2
DOIs
Publication statusPublished - 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • nanocomposites
  • vinyl siloxane
  • thermal properties
  • polymer network
  • elastomers
  • THERMAL-STABILITY
  • BLOCK-COPOLYMERS
  • NETWORKS
  • NANOCOMPOSITES
  • BEHAVIOR
  • SOL

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