研究目的
To develop a simple and effective method for the covalent functionalization of nanodiamond (ND) with four epoxies to improve the dispersion and achieve desirable interfacial adhesion between ND particles and polymer matrices.
研究成果
The study successfully developed a method for covalently linking four different epoxies to ND, significantly improving its dispersion in organic solvents. The epoxy-functionalized ND could serve as a chain extender and improve material performance, offering promising applications in polymer nanocomposites.
研究不足
The study focused on the functionalization of ND with four specific epoxies and their dispersion in organic solvents. The potential for further optimization and application in various polymer matrices was suggested but not extensively explored.
1：Experimental Design and Method Selection:
The method involved chemically oxidizing ND with a mixture of nitric acid, converting the carboxyl groups into amine groups by treatment with thionyl chloride and triethylenetetramine (TETA), and then grafting different epoxies onto the ND surface.
2：Sample Selection and Data Sources:
Pristine ND particles were purchased and treated with mixed acids and thionyl chloride.
3：List of Experimental Equipment and Materials:
Included ND particles, sulfuric acid, nitric acid, toluene, thionyl chloride, TETA, ethanol, THF, and four different epoxies.
4：Experimental Procedures and Operational Workflow:
The ND was treated with mixed acids, reacted with thionyl chloride and TETA, and then grafted with epoxies. The products were characterized using FT-IR, WAXD, UV-Vis, TGA, and SEM.
5：Data Analysis Methods:
The functionalized ND particles were analyzed for weight gain, dispersion in organic solvents, and particle size distribution.
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ND particles
Henan Hengxiang Diamond Abrasive
Used as the base material for functionalization
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H2SO4
Tianjin Hongyan Chemical Corporation
Used in the acid treatment of ND
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HNO3
Tianjin Hongyan Chemical Corporation
Used in the acid treatment of ND
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SOCl2
Tianjin Fuchen Chemical Reagents Factory
Used to convert carboxyl groups into acyl chloride groups
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TETA
Tianjin Kermel Chemical Reagent Corporation, Ltd
Used to modify ND with amine groups
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DGEBA
Jiangsu Sanmu Chemical Corporation
One of the epoxies used for functionalization of ND
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TGAP
Hunan Jiashengde Materials Technology Corporation, Ltd
One of the epoxies used for functionalization of ND
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TGDDM
Hunan Jiashengde Materials Technology Corporation, Ltd
One of the epoxies used for functionalization of ND
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BAEPN
Shandong Shengquan Chemical Corporation, Ltd
One of the epoxies used for functionalization of ND
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