High temperature-mechanical mixing to prepare electrically conducive sulfur-vulcanised poly(butadiene-co-acrylonitrile)-polyaniline dodecylbenzenesulfonate blends

Che Su M. S., . and Yong K. C., . High temperature-mechanical mixing to prepare electrically conducive sulfur-vulcanised poly(butadiene-co-acrylonitrile)-polyaniline dodecylbenzenesulfonate blends. pp. 1-17. ISSN 1511-1768

High temperature-mechanical mixing method (by using the combination of internal mixer and two-roll mill) was successfully used for the first time in order to prepare sulfur-vulcanised poly(butadiene-co-acrylonitrile)-polyaniline dodecylbenzenesulfonate NBR-PAni.DBSA blends. The addition of sulfur as the vulcanising agent did not affect the electrical properties of all these vulcanised blends (with good electrical conductivity up to 10“2S.cm“1 and low conductivity percolation threshold at only 5.0 wt /4.5 volume of PAni.DBSA loadings). The FT-IR spectra of the vulcanised NBR-PAni.DBSA blends resembled a superposition of the spectra of constituent NBR and PAni.DBSA but with some notable peak shifts due to changing intermolecular interactions between the two polymer components. Blends with 30 wt of PAni.DBSA gave the best compatibility i.e. with largest peak shifts for their FT-IR spectra and largest temperature shifts for their DSC recorded thermal events. The scanning electron microscopy study of the vulcanised blends showed that the level of electrical conductive network formation was enhanced with increase of PAni.DBSA content.

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Abstract

High temperature-mechanical mixing method (by using the combination of internal mixer and two-roll mill) was successfully used for the first time in order to prepare sulfur-vulcanised poly(butadiene-co-acrylonitrile)-polyaniline dodecylbenzenesulfonate NBR-PAni.DBSA blends. The addition of sulfur as the vulcanising agent did not affect the electrical properties of all these vulcanised blends (with good electrical conductivity up to 10“2S.cm“1 and low conductivity percolation threshold at only 5.0 wt /4.5 volume of PAni.DBSA loadings). The FT-IR spectra of the vulcanised NBR-PAni.DBSA blends resembled a superposition of the spectra of constituent NBR and PAni.DBSA but with some notable peak shifts due to changing intermolecular interactions between the two polymer components. Blends with 30 wt of PAni.DBSA gave the best compatibility i.e. with largest peak shifts for their FT-IR spectra and largest temperature shifts for their DSC recorded thermal events. The scanning electron microscopy study of the vulcanised blends showed that the level of electrical conductive network formation was enhanced with increase of PAni.DBSA content.

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Item Type:	Article
AGROVOC Term:	Rubber
AGROVOC Term:	Sulfur
AGROVOC Term:	Mechanical methods
AGROVOC Term:	Electrical properties
AGROVOC Term:	Electron microscopy
AGROVOC Term:	Peroxides
AGROVOC Term:	Chemicals
AGROVOC Term:	Thermal analysis
AGROVOC Term:	Polymers
AGROVOC Term:	Mechanical properties
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 02:32
URI:	http://webagris.upm.edu.my/id/eprint/23021

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