VOID STRUCTURE IN COLLOIDAL DISPERSIONS
VOID STRUCTURE IN COLLOIDAL DISPERSIONS
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DOI：
10.1126/science.263.5143.66
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发表时间：
1994-01-07
期刊：
影响因子：
56.9
通讯作者：
ISE, N
中科院分区：
文献类型：
--
作者：
ITO, K;YOSHIDA, H;ISE, N
利用共聚焦激光扫描显微镜研究了高纯度聚合物乳液中空隙结构的时间演变。在这种分散体中，最初是均匀的，当分散体保持静止时，空隙随时间增长，并且在内部材料中比在靠近玻璃-分散体界面的材料中更快地形成。因此，空隙的形成不是由于界面的存在而产生的伪影。一个类似的结构不均匀性，显然是均匀的系统，讨论了简单的离子溶液，离子聚合物溶液，和Langmuir-Blodgett膜。
The time evolution of void structures in highly purified polymer latex dispersions was studied with a confocal laser scanning microscope. In such dispersions, which were initially homogeneous, the voids grew with time when the dispersions were kept standing and formed more quickly in the internal material than in material close to the glass-dispersion interface. Void formation is thus not an artifact arising from the presence of the interface. A similar structural inhomogeneity, in apparently homogeneous systems, is discussed for simple ionic solutions, ionic polymer solutions, and Langmuir-Blodgett films.