Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber
Fibers are promising materials being utilized in electronics, principally in the areas of capacitors and sensors. In this study, we examine the effect of pyrolysis temperature on the electrical conductive behavior and photosensitivity of a carbon-based fiber, which was made by electrospinning a poly...
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| Format: | Article |
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MDPI AG
2019-11-01
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| Series: | ChemEngineering |
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| Online Access: | https://www.mdpi.com/2305-7084/3/4/86 |
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| author | Tyler Xu Antonino Nguyen Noe Rosas Isidro Flores Cindy Chen Jeremy B. Gan Anan S. Hamdan Yong X. Gan |
| author_facet | Tyler Xu Antonino Nguyen Noe Rosas Isidro Flores Cindy Chen Jeremy B. Gan Anan S. Hamdan Yong X. Gan |
| author_sort | Tyler Xu |
| collection | DOAJ |
| description | Fibers are promising materials being utilized in electronics, principally in the areas of capacitors and sensors. In this study, we examine the effect of pyrolysis temperature on the electrical conductive behavior and photosensitivity of a carbon-based fiber, which was made by electrospinning a polymer solution containing polyacrylonitrile (PAN), polymethyl methacrylate (PMMA), and dimethylformamide (DMF). Converting the polymeric fiber into a carbon fiber was performed through the controlled pyrolysis during which oxidation, stabilization, and carbonization happened. After oxidation at an elevated temperature, the linear polymer fiber was stabilized to have a backbone structure. Then the oxidized fiber was treated in an even higher temperature range to be partially carbonized under the protection of argon gas. We utilized multiple samples of the fibers treated at various pyrolysis temperatures inside a heat furnace and examined the effects of the temperatures on the properties. The partially carbonized fiber is highly active in view of electron generation under photon energy excitation. The unique electrical and photovoltaic property are due to their semiconducting behavior. The morphology of the specimen before and after the pyrolysis was examined using scanning electron microscopy (SEM). The SEM images displayed the shrinkage of the fiber due to the pyrolysis. There are two stages of pyrolysis kinetics. Stage I is related to the oxidation of the PAN polymer. Stage II is associated with the carbonization and the activation energy of carbonization is calculated as 118 kJ/mol. |
| first_indexed | 2024-12-11T23:54:15Z |
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| issn | 2305-7084 |
| language | English |
| last_indexed | 2024-12-11T23:54:15Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ChemEngineering |
| spelling | doaj.art-40afd22e66d4465898ec3c1ca76e540d2022-12-22T00:45:24ZengMDPI AGChemEngineering2305-70842019-11-01348610.3390/chemengineering3040086chemengineering3040086Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon FiberTyler Xu0Antonino Nguyen1Noe Rosas2Isidro Flores3Cindy Chen4Jeremy B. Gan5Anan S. Hamdan6Yong X. Gan7Walnut High School, 400 Pierre Rd, Walnut, CA 91789, USADepartment of Natural, Physical and Health Sciences, Citrus College, 1000 W Foothill Blvd, Glendora, CA 91741, USADepartment of Natural, Physical and Health Sciences, Citrus College, 1000 W Foothill Blvd, Glendora, CA 91741, USADepartment of Natural, Physical and Health Sciences, Cypress College, 9200 Valley View, Cypress, CA 90630, USADiamond Bar High School, 21400 Pathfinder Rd, Diamond Bar, CA 91765, USADepartment of Chemical and Biomolecular Engineering, The University of California, Los Angeles, 405 Hilgard Ave, Los Angeles, CA 90095, USADepartment of Electromechanical Engineering Technology, California State Polytechnic University, Pomona, 3801 W Temple Avenue, Pomona, CA 91768, USADepartment of Mechanical Engineering, California State Polytechnic University, Pomona, 3801 W Temple Avenue, Pomona, CA 91768, USAFibers are promising materials being utilized in electronics, principally in the areas of capacitors and sensors. In this study, we examine the effect of pyrolysis temperature on the electrical conductive behavior and photosensitivity of a carbon-based fiber, which was made by electrospinning a polymer solution containing polyacrylonitrile (PAN), polymethyl methacrylate (PMMA), and dimethylformamide (DMF). Converting the polymeric fiber into a carbon fiber was performed through the controlled pyrolysis during which oxidation, stabilization, and carbonization happened. After oxidation at an elevated temperature, the linear polymer fiber was stabilized to have a backbone structure. Then the oxidized fiber was treated in an even higher temperature range to be partially carbonized under the protection of argon gas. We utilized multiple samples of the fibers treated at various pyrolysis temperatures inside a heat furnace and examined the effects of the temperatures on the properties. The partially carbonized fiber is highly active in view of electron generation under photon energy excitation. The unique electrical and photovoltaic property are due to their semiconducting behavior. The morphology of the specimen before and after the pyrolysis was examined using scanning electron microscopy (SEM). The SEM images displayed the shrinkage of the fiber due to the pyrolysis. There are two stages of pyrolysis kinetics. Stage I is related to the oxidation of the PAN polymer. Stage II is associated with the carbonization and the activation energy of carbonization is calculated as 118 kJ/mol.https://www.mdpi.com/2305-7084/3/4/86carbon fiberpyrolysisoxidationcarbonizationelectrical propertyphotosensitivitycarbonization kineticsactivation energy |
| spellingShingle | Tyler Xu Antonino Nguyen Noe Rosas Isidro Flores Cindy Chen Jeremy B. Gan Anan S. Hamdan Yong X. Gan Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber ChemEngineering carbon fiber pyrolysis oxidation carbonization electrical property photosensitivity carbonization kinetics activation energy |
| title | Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber |
| title_full | Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber |
| title_fullStr | Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber |
| title_full_unstemmed | Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber |
| title_short | Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber |
| title_sort | effect of pyrolysis temperature on the electrical property and photosensitivity of a pan pmma derived carbon fiber |
| topic | carbon fiber pyrolysis oxidation carbonization electrical property photosensitivity carbonization kinetics activation energy |
| url | https://www.mdpi.com/2305-7084/3/4/86 |
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