Structural characteristics,dispersion,and modification of fibrous brucite
来源期刊：International Journal of Minerals Metallurgy and Materials2014年第1期
论文作者：Xi Cao Xiu-yun Chuan
文章页码：82 - 88
摘 要：Fibrous brucite has very unique structure and physical properties.Brucite fibers were exfoliated into single nanofibers by using dioctyl sodium sulfosuccinate（AOT） as a dispersant through mechanical agitation and ultrasonic dispersion; and then,the nanofibers were modified by stearic acid and（3-aminopropyl）triethoxysilane（γ-APS） compound modification agent.The nanofibers were characterized by using X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,Fourier transform infrared spectroscopy（FTIR）,and thermal gravimetric analysis.It is found that AOT has good effect on the dispersion.The single fiber has a consistent morphology,and fibrous brucite is dispersed and modified without destroying the crystal structure.Infrared and thermal analysis shows that the surface modification of fibrous brucite is achieved by forming chemical bonds between the coupling agent and magnesium hydroxide.
Xi Cao，Xiu-yun Chuan
Key Laboratory of Orogen and Crust Evolution of the Education Ministry of China,School of Earth and Space Sciences,Peking University
摘 要：Fibrous brucite has very unique structure and physical properties.Brucite fibers were exfoliated into single nanofibers by using dioctyl sodium sulfosuccinate（AOT） as a dispersant through mechanical agitation and ultrasonic dispersion; and then,the nanofibers were modified by stearic acid and（3-aminopropyl）triethoxysilane（γ-APS） compound modification agent.The nanofibers were characterized by using X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,Fourier transform infrared spectroscopy（FTIR）,and thermal gravimetric analysis.It is found that AOT has good effect on the dispersion.The single fiber has a consistent morphology,and fibrous brucite is dispersed and modified without destroying the crystal structure.Infrared and thermal analysis shows that the surface modification of fibrous brucite is achieved by forming chemical bonds between the coupling agent and magnesium hydroxide.
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