Citation: LIN Guo-Liang, ZHENG Yu-Ying. Grafting Maleic Anhydride onto Carbon Fiber via a Solid-phase Grafting Method[J]. Chinese Journal of Structural Chemistry, ;2015, 34(9): 1458-1464. doi: 10.14102/j.cnki.0254-5861.2011-0633 shu

Grafting Maleic Anhydride onto Carbon Fiber via a Solid-phase Grafting Method

1.
College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350116, China

Received Date: 13 January 2015
Available Online: 10 April 2015
Fund Project:

By combining the strong and light carbon fibers (CFs) with polymers, composite materials with extraordinary mechanical properties are achieved. However, the mechanical properties of the as-prepared CF-reinforced polymer composites can not satisfy the applications in certain fields, especially for the poor interactions between CFs and the polymers. To enhance the mechanical properties of composite materials, a solid phase grafting method has been developed to improve the adhesion forces between CFs and the polymer, by modifying the surfaces of CFs. The effects of the reaction temperature, reaction time, as well as the dosage of the initiator and maleic anhydride (MAH) on the grafting efficiency have been investigated systematically. The structure and the surface chemistry of functionalized CFs have been characterized by Fourier Transform Infrared (FT-IR), Scanning Electron Microscope (SEM), X-ray Photoelectron Spectroscopy (XPS), Thermogravimetric (TG), and contact angle test. All of these results demonstrate that MAH is grafted onto the surface of CFs successfully by the solid phase grafting method. The MAH grafted CFs significantly improve its wettability, which further improves the interfacial adhesion between CFs and the polymeric matrix. The optimal reaction conditions are determined, such as the MAH/CF molar ratio, the dosage of initiator, the reaction temperature and the reaction time to be 3/1, 2%, 90℃ and 4 h, respectively. These attractive interfacial characteristics of modified CFs suggest that the method proposed herein is a novel and efficient approach to develop CF-reinforced polymer composites with outstanding mechanical properties for cutting-edge industrial applications.
- carbon fiber,
- maleic anhydride,
- fuctionalized,
- solid-phase grafting,
- degree of grafting
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