Determination of the crosslink density of silica-filled styrene butadiene rubber compounds by different analytical methods

Maria Del Pilar Bernal Ortega, Rafal Anyszka, Yoshihiro Morishita, Raffaele di Ronza, Anke Blume*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
86 Downloads (Pure)

Abstract

The crosslink density of rubber compounds has a great effect on the properties of the final product. For this reason, a suitable characterization method is required to understand and optimize the final performance of rubber materials. Four different experimental techniques were used to determine the crosslink density of silica-filled styrene butadiene rubber composites: equilibrium swelling experiments, stress–strain measurements using the Mooney–Rivlin theory, freezing point depression temperature tests and Temperature Scanning Stress Relaxation (TSSR) measurements. The evaluation of these different techniques shows that the results obtained follow a similar trend for all four methods. The results from the Mooney-Rivlin and TSSR measurements correlate the best. These two techniques are the least affected by the presence of fillers and are the less time-consuming ones. Furthermore, they also show the best correlation with the mechanical properties of the studied compounds.

Original languageEnglish
Pages (from-to)995-1018
Number of pages24
JournalPolymer bulletin
Volume81
Early online date13 Mar 2023
DOIs
Publication statusPublished - Jan 2024

Keywords

  • Crosslink density
  • Rubber
  • Silanes
  • Silica
  • UT-Hybrid-D

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