Effect of stabilizers on surface oxidation of silicone rubber by corona discharge

Crosslinked polydimethylsiloxane (PDMS) containing Irganox ® 1076, Tinuvin ® 770 or Irganox ® 565, prepared by swelling PDMS in a solution of one of these stabilizers in n-hexane, was exposed to a corona discharge and the corona exposure time ( τ crit) to form a brittle, silica-like layer was determ...

Full description

Saved in:
Bibliographic Details
Published in:Polymer degradation and stability 2004-06, Vol.84 (3), p.469-474
Main Authors: Fateh-Alavi, K., Gedde, U.W.
Format: Article
Language:English
Subjects:
Applied sciences
Corona
Cracking
cross-linked polydimethylsiloxane
Crosslinked polydimethylsiloxane
Exact sciences and technology
exposure
hydrophobic recovery
Physicochemistry of polymers
plasma-treated polydimethylsiloxane
Polymer industry, paints, wood
Stabilizers
Surface oxidation
Technology of polymers
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:Crosslinked polydimethylsiloxane (PDMS) containing Irganox ® 1076, Tinuvin ® 770 or Irganox ® 565, prepared by swelling PDMS in a solution of one of these stabilizers in n-hexane, was exposed to a corona discharge and the corona exposure time ( τ crit) to form a brittle, silica-like layer was determined by optical microscopy. The critical corona exposure time showed a linear increase with increasing stabilizer concentration; Tinuvin 770 showed the highest efficiency and Irganox 1076 the lowest. The increase in τ crit on corona exposure of the stabilized samples with reference to the value for unstabilized PDMS was similar to that reported earlier for air plasma exposed samples. The efficiency of the stabilizers towards corona-induced surface oxidation of PDMS was also confirmed by X-ray photoelectron spectroscopy.
ISSN:0141-3910
1873-2321
1873-2321
DOI:10.1016/j.polymdegradstab.2004.01.005