Low molecular weight ‘liquid’ polymer extended compounds, impact on free volume and crosslink density studied by positron lifetime spectroscopy and stress-strain analysis according to Mooney-Rivlin

M. Gruendken, D. Koda, J. Dryzek, A. Blume*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)
187 Downloads (Pure)

Abstract

Liquid polymers are used in elastomeric compounds to modify their processing and final characteristics. The material is considered as a polymeric plasticizer and is used to substitute or supplement conventional plasticizer like paraffinic or aromatic oils, or hydrocarbon resins. Their plasticizing effect and contribution to the crosslinking in sulfur cured SSBR mixtures is studied. Aromatic oil, aliphatic resin and different liquid polymers, varied in type, molecular weight and microstructure are discussed. Different plasticizing effects are shown with corresponding curing torques and Shore hardness values. The free volume – measured by positron annihilation lifetime spectroscopy - increases or decreases according to the liquid polymer's incorporation in the main polymer.

Original languageEnglish
Article number107239
Number of pages10
JournalPolymer testing
Volume100
Early online date17 Jun 2021
DOIs
Publication statusPublished - Aug 2021

Keywords

  • Crosslinking
  • Free volume
  • Liquid polymer
  • Plasticization
  • Positron annihilation lifetime spectroscopy
  • UT-Hybrid-D

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