Progress in Rubber, Plastics and Recycling Technology

DEGRADATION BEHAVIOUR OF NATURAL RUBBER LAYERED SILICATE NANOCOMPOSITES

Title: DEGRADATION BEHAVIOUR OF NATURAL RUBBER LAYERED SILICATE NANOCOMPOSITES Page Range: p.1-20 Author(s): Shera Mathew; Siby Varghese; Rani Joseph File size: Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Progress in Rubber, Plastics and Recycling Technology…

January 1, 2013 By: Shera Mathew; Siby Varghese; Rani Joseph Research article

Title: DEGRADATION BEHAVIOUR OF NATURAL RUBBER LAYERED SILICATE NANOCOMPOSITES
Page Range: p.1-20
Author(s): Shera Mathew; Siby Varghese; Rani Joseph
File size:
Download the pdf (subscribers only)
Buy the pdf (non-subscribers)
Journal: Progress in Rubber, Plastics and Recycling Technology
Issue Year: prprt
Volume: 29
Issue No: No.1

Abstract
The degradation behaviour of natural rubber latex nanocomposites employing various degrading agents viz. thermal, gamma and UV radiations, chlorination, sterilisation, ozone and solvents, was studied in detail. It was found that the layered silicate nanocomposite performed well in the presence of most of the degrading agents and such materials are suitable for processes such as chlorination, sterilisation etc. It was observed that the degrading action was arrested either due to the hindrance exerted by the clay layers against crack propagation or due to the barrier effect against the degrading agents. A better interaction of nanosilicates was found with a polymer matrix due to their higher surface area, making the matrix stiffer and the diffusion of heat and gases through the bulk more difficult hence, retarding the degradation of the composite. These points were illustrated using XRD, TEM, SEM and TGA studies. Kraus plot showed a strong filler-rubber interface in rubber nanocomposites. Schematic representation of the degradation of the nanocomposite demonstrated the effect of nanofillers in chain scission or crosslinking, which may occur during degradation. 28 Refs.


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