| Effects of PSMA and experimental conditions on the morphologies of BaCO3 whiskers |
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| 引用本文： | CHENG Bei YU Xiaoxiao YU Jiaguo ZHAO Xiujian. Effects of PSMA and experimental conditions on the morphologies of BaCO3 whiskers[J]. 稀有金属(英文版), 2006, 25(4): 382-388. DOI: 10.1016/S1001-0521(06)60072-7 |
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| 作者姓名： | CHENG Bei YU Xiaoxiao YU Jiaguo ZHAO Xiujian |
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| 作者单位： | State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
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| 摘 要： | BaCO3 whiskers exhibiting different morphologies were fabricated by a simple precipitation reaction of barium ch/oride with sodium carbonate in the absence and presence of poly-（styrene-alt-maleic acid） （PSMA） as a crystal growth modifier at room temperature. The as-prepared products were characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, and X-ray diffraction （XRD）. The influences of experimental parameters on the size and morphology of BaCO3 whiskers were investigated and discussed. It was found that the as-prepared BaCO3 whiskers are single crystals with diameter ranging from 100 to 300 run, and grow along the crystallographic a-axis or [100] direction. BaCO3 whiskers with different morphologies, such as branching and dendritic structure, can be obtained depending on the experimental conditions. With increasing PSMA concentration, the diameter of BaCO3 whiskers decreases.
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| 关 键 词： | BaCO3胡须 形态控制 聚（苯乙烯-高-顺丁烯二酸） 单晶 |
| 收稿时间： | 2005-10-26 |
Effects of PSMA and experimental conditions on the morphologies of BaCO3 whiskers |
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| CHENG Bei,YU Xiaoxiao,YU Jiaguo,ZHAO Xiujian. Effects of PSMA and experimental conditions on the morphologies of BaCO3 whiskers[J]. Rare Metals, 2006, 25(4): 382-388. DOI: 10.1016/S1001-0521(06)60072-7 |
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| Authors: | CHENG Bei YU Xiaoxiao YU Jiaguo ZHAO Xiujian |
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| Affiliation: | 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China;3. School of Mathematical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Qld 4001, Australia;1. Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, PR China;2. Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, PR China;3. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China;4. Department of Chemistry and Center for Nanotechnology and Institute of Biomedical Technology, Chung-Yuan Christian University, Chung-Li 32023, Taiwan |
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| Abstract: | BaCO3 whiskers exhibiting different morphologies were fabricated by a simple precipitation reaction of barium chloride with sodium carbonate in the absence and presence of poly-(styrene-alt-maleic acid) (PSMA) as a crystal growth modifier at room temperature. The as-prepared products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The influences of experimental parameters on the size and morphology of BaCO3 whiskers were investigated and discussed. It was found that the as-prepared BaCO3 whiskers are single crystals with diameter ranging from 100 to 300 nm, and grow along the crystallographic a-axis or [100] direction. BaCO3 whiskers with different morphologies, such as branching and dendritic structure, can be obtained depending on the experimental conditions. With increasing PSMA concentration, the diameter of BaCO3 whiskers decreases. |
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| Keywords: | BaCO3 whiskers morphological control poly-(styrene-alt-maleic acid) single crystal |
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