Investigating the ageing behavior of polysiloxane nanocomposites by degradative thermal analysis

J.P. Lewicki; J.J. Liggat; R.A. Pethrick; M. Patel; I. Rhoney

doi:10.1016/j.polymdegradstab.2007.10.008

Investigating the ageing behavior of polysiloxane nanocomposites by degradative thermal analysis

J.P. Lewicki, J.J. Liggat, R.A. Pethrick, M. Patel, I. Rhoney

Pure And Applied Chemistry

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

The ageing behavior of novel polysiloxane nanocomposite elastomers is reported. A series of model polysiloxane nanocomposites has been prepared incorporating the montmorillonite nanoclay Cloisite 6A. The nanoclay dispersion has been characterized with X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). TGA has been utilized to study the effects of ageing on the non-oxidative stability of the nanocomposite systems. The complex evolution of volatiles that occurs during ageing has been studied using Sub-Ambient Thermal Volatilization Analysis (SATVA). Results indicate that significant chemical changes take place within the nanocomposites upon ageing; acid catalyzed hydrolysis, chain backbiting and recombination reactions are re-structuring the polymer-filler network into a more thermodynamically stable form.

Original language	English
Pages (from-to)	158-168
Number of pages	11
Journal	Polymer Degradation and Stability
Volume	93
Issue number	1
DOIs	https://doi.org/10.1016/j.polymdegradstab.2007.10.008
Publication status	Published - Jan 2008

Keywords

clay nanocomposite
ageing
thermal degradation
polysiloxane

Access to Document

10.1016/j.polymdegradstab.2007.10.008

Cite this

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title = "Investigating the ageing behavior of polysiloxane nanocomposites by degradative thermal analysis",

abstract = "The ageing behavior of novel polysiloxane nanocomposite elastomers is reported. A series of model polysiloxane nanocomposites has been prepared incorporating the montmorillonite nanoclay Cloisite 6A. The nanoclay dispersion has been characterized with X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). TGA has been utilized to study the effects of ageing on the non-oxidative stability of the nanocomposite systems. The complex evolution of volatiles that occurs during ageing has been studied using Sub-Ambient Thermal Volatilization Analysis (SATVA). Results indicate that significant chemical changes take place within the nanocomposites upon ageing; acid catalyzed hydrolysis, chain backbiting and recombination reactions are re-structuring the polymer-filler network into a more thermodynamically stable form.",

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author = "J.P. Lewicki and J.J. Liggat and R.A. Pethrick and M. Patel and I. Rhoney",

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doi = "10.1016/j.polymdegradstab.2007.10.008",

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T1 - Investigating the ageing behavior of polysiloxane nanocomposites by degradative thermal analysis

AU - Lewicki, J.P.

AU - Liggat, J.J.

AU - Pethrick, R.A.

AU - Patel, M.

AU - Rhoney, I.

PY - 2008/1

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N2 - The ageing behavior of novel polysiloxane nanocomposite elastomers is reported. A series of model polysiloxane nanocomposites has been prepared incorporating the montmorillonite nanoclay Cloisite 6A. The nanoclay dispersion has been characterized with X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). TGA has been utilized to study the effects of ageing on the non-oxidative stability of the nanocomposite systems. The complex evolution of volatiles that occurs during ageing has been studied using Sub-Ambient Thermal Volatilization Analysis (SATVA). Results indicate that significant chemical changes take place within the nanocomposites upon ageing; acid catalyzed hydrolysis, chain backbiting and recombination reactions are re-structuring the polymer-filler network into a more thermodynamically stable form.

AB - The ageing behavior of novel polysiloxane nanocomposite elastomers is reported. A series of model polysiloxane nanocomposites has been prepared incorporating the montmorillonite nanoclay Cloisite 6A. The nanoclay dispersion has been characterized with X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). TGA has been utilized to study the effects of ageing on the non-oxidative stability of the nanocomposite systems. The complex evolution of volatiles that occurs during ageing has been studied using Sub-Ambient Thermal Volatilization Analysis (SATVA). Results indicate that significant chemical changes take place within the nanocomposites upon ageing; acid catalyzed hydrolysis, chain backbiting and recombination reactions are re-structuring the polymer-filler network into a more thermodynamically stable form.

KW - clay nanocomposite

KW - ageing

KW - thermal degradation

KW - polysiloxane

U2 - 10.1016/j.polymdegradstab.2007.10.008

DO - 10.1016/j.polymdegradstab.2007.10.008

M3 - Article

VL - 93

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EP - 168

JO - Polymer Degradation and Stability

JF - Polymer Degradation and Stability

SN - 0141-3910

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