Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment
The interfacial adhesion between carbon fibers (CFs) and a thermoplastic matrix is an important aspect that should be improved in manufacturing CF-reinforced thermoplastics with high strength and rigidity. In this study, the effects of a two-step surface treatment comprising electrochemical oxidatio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/18/3784 |
| _version_ | 1797577663516246016 |
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| author | Dong-Kyu Kim Woong Han Kwan-Woo Kim Byung-Joo Kim |
| author_facet | Dong-Kyu Kim Woong Han Kwan-Woo Kim Byung-Joo Kim |
| author_sort | Dong-Kyu Kim |
| collection | DOAJ |
| description | The interfacial adhesion between carbon fibers (CFs) and a thermoplastic matrix is an important aspect that should be improved in manufacturing CF-reinforced thermoplastics with high strength and rigidity. In this study, the effects of a two-step surface treatment comprising electrochemical oxidation and silane treatment of the CF surface on the mechanical properties of CF/maleic anhydride-grafted polypropylene (MAPP) composites were confirmed. The surface characteristics of the treated CFs were analyzed via scanning electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The tensile testing of a single CF and interfacial adhesion of the samples before and after the surface treatment were analyzed using a single-fiber testing machine and a universal testing machine. After the silane treatment, the roughness of the CF surface increased due to the formation of a siloxane network. In addition, the interfacial shear strength increased by ∼450% compared to that of the untreated CFs due to the covalent bond between the -NH<sub>2</sub> end group of siloxane and MAPP. This two-step surface treatment, which can be performed continuously, is considered an effective method for improving the mechanical interface strength between the CF and polymer matrix. |
| first_indexed | 2024-03-10T22:11:14Z |
| format | Article |
| id | doaj.art-441b495d2da64df1bd552bafcb42588f |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T22:11:14Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-441b495d2da64df1bd552bafcb42588f2023-11-19T12:35:46ZengMDPI AGPolymers2073-43602023-09-011518378410.3390/polym15183784Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane TreatmentDong-Kyu Kim0Woong Han1Kwan-Woo Kim2Byung-Joo Kim3Industrialization Division, Korea Carbon Industry Promotion Agency, Jeonju 54852, Republic of KoreaIndustrialization Division, Korea Carbon Industry Promotion Agency, Jeonju 54852, Republic of KoreaIndustrialization Division, Korea Carbon Industry Promotion Agency, Jeonju 54852, Republic of KoreaDepartment of Advanced Materials and Chemical Engineering, Jeonju University, Jeonju 55069, Republic of KoreaThe interfacial adhesion between carbon fibers (CFs) and a thermoplastic matrix is an important aspect that should be improved in manufacturing CF-reinforced thermoplastics with high strength and rigidity. In this study, the effects of a two-step surface treatment comprising electrochemical oxidation and silane treatment of the CF surface on the mechanical properties of CF/maleic anhydride-grafted polypropylene (MAPP) composites were confirmed. The surface characteristics of the treated CFs were analyzed via scanning electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The tensile testing of a single CF and interfacial adhesion of the samples before and after the surface treatment were analyzed using a single-fiber testing machine and a universal testing machine. After the silane treatment, the roughness of the CF surface increased due to the formation of a siloxane network. In addition, the interfacial shear strength increased by ∼450% compared to that of the untreated CFs due to the covalent bond between the -NH<sub>2</sub> end group of siloxane and MAPP. This two-step surface treatment, which can be performed continuously, is considered an effective method for improving the mechanical interface strength between the CF and polymer matrix.https://www.mdpi.com/2073-4360/15/18/3784carbon fibersilane treatmentelectrochemical oxidationcompositesinterfacial shear strength |
| spellingShingle | Dong-Kyu Kim Woong Han Kwan-Woo Kim Byung-Joo Kim Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment Polymers carbon fiber silane treatment electrochemical oxidation composites interfacial shear strength |
| title | Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment |
| title_full | Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment |
| title_fullStr | Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment |
| title_full_unstemmed | Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment |
| title_short | Enhanced Interfacial Properties of Carbon Fiber/Maleic Anhydride-Grafted Polypropylene Composites via Two-Step Surface Treatment: Electrochemical Oxidation and Silane Treatment |
| title_sort | enhanced interfacial properties of carbon fiber maleic anhydride grafted polypropylene composites via two step surface treatment electrochemical oxidation and silane treatment |
| topic | carbon fiber silane treatment electrochemical oxidation composites interfacial shear strength |
| url | https://www.mdpi.com/2073-4360/15/18/3784 |
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