Aggregation of Elongated Colloids in Water.
Aggregation of Elongated Colloids in Water.
复制标题
水中细长胶体的聚集。
DOI:
10.1021/acs.langmuir.6b03962
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Jerolmack,DouglasJ
中科院分区:
文献类型:
--
作者:
Wu,Lei;Ortiz,CarlosP;Jerolmack,DouglasJ
Colloidal aggregation is a canonical example of disordered growth far from equilibrium and has been extensively studied for the case of spherical monomers. Many particles encountered in industry and the environment are highly elongated; however, the control of particle shape on aggregation kinetics and structure is not well-known. Here, we explore this control in laboratory experiments that document aqueous diffusion and aggregation of two different elongated colloids: natural asbestos fibers and synthetic glass rods, with similar aspect ratios of about 5:1. We also perform control runs with glass spheres of similar size (∼1 μm). The aggregates assembled from the elongated particles are noncompact, with morphologies and growth rates that differ markedly from the classical aggregation dynamics observed for spherical monomers. The results for asbestos and glass rods are remarkably similar, demonstrating the primacy of shape over material propertiessuggesting that our findings may be extended to other elongated colloids such as carbon nanotubes/fibers. This study may lead to enhanced prediction of the transport and fate of colloidal contaminants in the environment, which are strongly influenced by the growth and structure of aggregates.
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DOI:
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发表时间:
2001
期刊:
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
1975
期刊:
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DOI:
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发表时间:
1993
期刊:
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作者:
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通讯作者:
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
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通讯作者:
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