An Investigation on the Thermally Induced Compatibilization of SBR and α-Methylstyrene/Styrene Resin

The miscibility between two polymers such as rubbers and performance resins is crucial to achieve given targeted properties in terms of tire performances. To this aim, α-methylstyrene/styrene resin (poly(αMSt- -St)) are used to modify the viscoelastic behavior of rubbers and to fulfill the requireme...

Full description

Saved in:
Bibliographic Details
Published in:Polymers 2021-04, Vol.13 (8), p.1267
Main Authors: Wolf, Arnaud, Fernandes, João Paulo Cosas, Yan, Chuanyu, Dieden, Reiner, Poorters, Laurent, Weydert, Marc, Verge, Pierre
Format: Article
Language:English
Subjects:
Butadiene
Chromatography
Crosslinking
Depolymerization
Homogenization
Hydrocarbons
Miscibility
Molecular weight
Morphology
NMR
Nuclear magnetic resonance
Polymer blends
Polymers
Resins
Rheology
Rubber
Solvents
Styrenes
Topography
Viscoelasticity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The miscibility between two polymers such as rubbers and performance resins is crucial to achieve given targeted properties in terms of tire performances. To this aim, α-methylstyrene/styrene resin (poly(αMSt- -St)) are used to modify the viscoelastic behavior of rubbers and to fulfill the requirements of the final applications. The initial aim of this work was to understand the influence of poly(αMSt- -St) resins blended at different concentrations in a commercial styrene-butadiene rubber (SBR). Interestingly, while studying the viscoelastic properties of SBR blends with poly(αMSt- -St), crosslinking of the rubber was observed under conditions where it was not expected to happen. Surprisingly, after the crosslinking reactions, the poly(αMSt- -St) resin was irreversibly miscible with SBR at concentrations far above its immiscibility threshold. A detailed investigation involving characterization technics including solid state nuclear magnetic resonance led to the conclusion that poly(αMSt- -St) is depolymerizing under heating and can graft onto the chains of SBR. It results in an irreversible compatibilization mechanism between the rubber and the resin.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym13081267