荧光纳米粘土复合凝胶的微观结构及老化动力学
Microstructure and Aging Dynamics of Fluorescent Nanoclay Co-gels of Laponite and Montmorillonite
摘要：
软物质系统中的老化现象是一个有趣而有趣的问题。在他的研究中，我们调查的微观结构和老化动力学的荧光纳米粘土凝胶形成的混合物的小（~25）和大（~250）的纵横比纳米盘使用各种实验技术。我们研究了一种粘土在其他不同性质的粘土中的存在如何影响老化动力学，微观结构和最终产生的相。分散体的粘度随体系的等待时间呈幂律增长，分散体最初表现出麦克斯韦行为，但随着时间的推移而偏离。分形维数，DF的凝胶被发现是2.5。共聚焦显微照片显示纳米粘土凝胶中的清晰晶界，因为Na-蒙脱石表现出荧光。我们还首次报道了含钠MMT的凝胶在紫外光下发出明亮的黄绿色荧光。这些荧光凝胶可用于工业和学术研究。
英文摘要：
The phenomenon of aging in soft matter systems is an intriguing and interesting. In his study we investigate the microstructure and aging dynamics of fluorescent nanoclay gels formed from the mixture of small (~25) and large (~250) aspect ratio nanodiscs using various experimental techniques. We examine how the presence of one kind of clay in other clay of different nature affect the aging dynamics, microstructure and the final resulting phase. Viscosity of the dispersions grows as a power-law with waiting time of the system and the dispersions initially show Maxwellian behaviour but deviated as the time progressed. Fractal dimension, df of the gels is found to be 2.5. Confocal micrographs revealed clear grain boundaries in the nanoclay gels, since Na-Montmorillonite exhibit fluorescence. We also report for the first time that the gels containing sodium MMT gives a bright green-yellow fluorescence in ultra violet light. These fluorescent gels may be useful in industry and academic research.
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