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Electrical Resistivity of Poly(Vinyl Alcohol) Nanofibrous Structures Filled with Carbon Black, Self-Dispersible Carbon Black and Carbon Nanotube |
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| รหัสดีโอไอ | |
| Creator | 1. Wipawan Wongdao 2. Panu Danwanichakul |
| Title | Electrical Resistivity of Poly(Vinyl Alcohol) Nanofibrous Structures Filled with Carbon Black, Self-Dispersible Carbon Black and Carbon Nanotube |
| Publisher | Faculty of Engineering, Khon Kaen Univeristy |
| Publication Year | 2555 |
| Journal Title | KKU Engineering Journal |
| Journal Vol. | 39 |
| Journal No. | 3 |
| Page no. | 301-309 |
| Keyword | Nanofiber, Poly (vinyl alcohol), Carbon black, Self-dispersible carbon black and carbon nanotube |
| ISSN | 0125-8573 |
| Abstract | The studies of electrical resistivity of poly (vinyl alcohol) nanofibrous structures filled with carbon black, self-dispersible carbon black and carbon nanotube were done in this work. The PVA solution was prepared at 25% and the filler loading was varied to 2% 4% 6% 8% and 10% of PVA amount. The nanofibrous structures were fabricated by electrospinning method. The results revealed that carbon black was able to reduce electrical resistivity of electrospun structures. However, the agglomeration of carbon black particles occurred and this resulted in fluctuation of the amount of carbon black in the nanofibrous structures and their electrical resistivity as well as sensitivity. The surface treatment of carbon black particles yield self-dispersible carbon black which could increase degree of dispersion in PVA solution, leading to less fluctuation of the amount of carbon black in the fibers and their resistivity and sensitivity. Considering carbon nanotubes, it was observed that large clusters were formed and particulate settling occurred in the polymer solution. The agglomeration of fillers and particulate settling in solution seems to be a controlling factor in the variation of solution electrical property, filler amount in nanofibrous structures, and electrical property of the nanofibrous structures. |
