Structure–Property Relationships Governing Rheological, Damping, and Thermal Behaviour of Immiscible Natural Rubber/Nitrile Rubber Blend Nanocomposites
Martin George Thomas, Sanitha Vasudevan, Hanna J. Maria, Ange Nzihou, Roberto Scaffaro, Marco Morreale, Sabu Thomas
TL;DR
This paper studies how adding nanoclay to a rubber blend affects its flow, elasticity, and heat properties.
Contribution
The study reveals how nanoclay concentration affects the structure and performance of rubber blend nanocomposites.
Findings
At low nanoclay concentration, polymer chain immobilization increases viscosity and viscoelastic response.
High nanoclay loading causes filler agglomeration, reducing viscosity and damping efficiency.
Blend composition and filler content strongly influence hysteresis loss and thermal conductivity.
Abstract
Polymer nanocomposites have been attracting significant interest over the last three decades. One of the most intriguing applications is related to the preparation of clay-filled nanocomposites based on rubber blend matrices. Although several studies already exist on the subject, there is limited information available regarding their rheological, thermal, and, particularly, damping behaviour of rubber blend systems. In this work, the rheological, viscoelastic, and thermal behaviour of a natural rubber/nitrile rubber (NR/NBR) blend nanocomposite containing organically modified nanoclay was systematically investigated, and the damping characteristics were also assessed. At a lower nanoclay concentration (5 phr), network formation through filler–filler and filler–polymer interactions led to partial immobilization of polymer chains, resulting in a pronounced increase in viscosity and…
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Taxonomy
TopicsPolymer Nanocomposites and Properties · Elasticity and Material Modeling · Polymer crystallization and properties