Polymers and Polymer Composites

EFFECTS OF SURFACE TREATMENT OF COBALT OXIDE PARTICLES ON THE PROPERTIES OF POLYMETHYLPHENYLSILOXANE BASED NANOCOMPOSITES

August 1, 2004 By: Sun J T; Huang Y D; Cao H L; Gong G F Research article

Title: EFFECTS OF SURFACE TREATMENT OF COBALT OXIDE PARTICLES ON THE PROPERTIES OF POLYMETHYLPHENYLSILOXANE BASED NANOCOMPOSITES
Page Range: p.739-747
Author(s): Sun J T; Huang Y D; Cao H L; Gong G F
File size: 168K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 12
Issue No: No. 8

Abstract
The objective of this study was to prepare a cobalt oxide/polymethylphenylsiloxane (PMPS) nanocomposite with excellent thermal and endothermal properties. The cobalt oxide nanoparticles were subjected to a grafting treatment with polybutylmethacrylate (PBMA) and then incorporated into heat-resistant polymethylphenylsiloxane. The effects of their grafting treatment on the properties of the nanocomposites were investigated and reported. Results of investigations carried out with a dynamic wetting instruments, transmission electron microscopy, differential thermogravimetry and by a calibration test of the heat flow transducer indicated that PBMA had been grafted onto the surfaces of the cobalt oxide nanoparticles successfully, and that the grafting ratio had reached around 6.6%. Compared with pure PMPS resin, the thermal stability of the untreated cobalt oxide/PMPS composites decreased, but increased for treated cobalt oxide/PMPS composites. The calibration test of the heat flow transducer revealed that the nanocomposite with grafted cobalt oxide nanoparticles had much better endothermal properties than the one with untreated nanoparticles. 26 refs.


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