Publication: Physicoelectrical properties and piezoresistive sensing of the extrusion-based conductive rubber composites: Simultaneous effects of the extrusion parameters
Issued Date
2021-01-01
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ISSN
00359475
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2-s2.0-85107931668
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Mahidol University
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SCOPUS
Bibliographic Citation
Rubber Chemistry and Technology. Vol.94, No.1 (2021), 48-66
Suggested Citation
JIRAWAT NARONGTHONG, PONGDHORN SAE-OUI, MANUCHET NILLAWONG, CHAKRIT SIRISINHA Physicoelectrical properties and piezoresistive sensing of the extrusion-based conductive rubber composites: Simultaneous effects of the extrusion parameters. Rubber Chemistry and Technology. Vol.94, No.1 (2021), 48-66. doi:10.5254/rct.20.80392 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/77371
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Title
Physicoelectrical properties and piezoresistive sensing of the extrusion-based conductive rubber composites: Simultaneous effects of the extrusion parameters
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Abstract
Flexible conductive rubber composites (CRCs) were prepared based on carbon black-filled oil-extended styrene- butadiene rubber soft matrix. Using a variety of screw designs, the simultaneous effects of the twin-screw extrusion parameters (i.e., kneading element, dispersing position, and screw speed) on the physicoelectrical properties of the CRCs were investigated statistically. The increased intenseness of the extrusion parameters significantly enhances the piezoresistive sensing via the improved filler dispersion, increased rubber-filler interaction, and weakened filler-filler networks. Nevertheless, the influence of the kneading elements on the properties of the CRCs significantly decreases with an increase in the intenseness of the dispersing position or the screw speed, referred to as a "negative interaction." An extreme intenseness of the screw design causes the excellent piezoresistive sensing of the CRCs, but with undesirable mechanical strength. Because those properties need to be balanced, many methods of adjusting the CRCs to be more suitable for strainsensor application, in terms of not only piezoresistive performance but also mechanical strength, were thus established.