Integral transformation method for sedimentation behaviours of aggregates: Part I. α-Cyclodextrin/poly(ethyrene glycol)/water system
Integral transformation method for sedimentation behaviours of aggregates: Part I. α-Cyclodextrin/poly(ethyrene glycol)/water system
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聚集体沉降行为的积分转化方法：第一部分：α-环糊精/聚乙二醇/水体系
DOI：
10.1016/j.colsurfa.2004.02.007
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
H. Ushiki
中科院分区：
文献类型：
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作者：
Y. Hattori;C. Hashimoto;Jean Lashaise;A. Graciaa;H. Ushiki
我们尝试用数字图像处理和积分变换的方法来研究胶体颗粒在水介质中扩散和沉降的浓度分布。我们在以前的文章中提出了这种方法作为一种原创性的方法。该方法的定义为：I(T)=∫i(t，τ)×D(τ)dt，其中I(T)、I(t，τ)和D(τ)分别是唯象(响应)函数、初等函数和分布函数。该方法基于数字图形图像数据，给出了浓度分布的特征长度分布。我们将该方法应用于α-环糊精(α-CD)/聚乙二醇/水体系的沉淀行为。得到的聚集体在CD-PEG络合物之间的分布曲线随时间变化。在本文中，我们还可以讨论不同温度下胶乳粒子的沉降平衡的松弛时间，τ_s。我们将简要讨论胶乳粒子与CD-PEG络合物之间的不同沉淀行为。
We tried to investigate concentration profiles of colloidal particles diffusing and settling down in aqueous media with a digital image processing and an integral transformation method. We proposed this method as an original one in previous papers. The definition of the method is shown as: I (t)=∫ i (t, τ)× D (τ) dt, where I (t), i (t, τ) and D (τ) are phenomenological (response), elementary and distribution functions, respectively. The distributions of the characteristic length of concentration profiles were given by this method based on digital graphical image data. We have applied this method to sedimentation behaviours of α-cyclodextrin (α-CD)/poly (ethylene glycol)(PEG)/water systems. The obtained distribution curves of aggregates between CD–PEG complexes were changed as a function of time. In this paper, we could discuss also about relaxation times, τsed for a sedimentation equilibrium of latex particles at various temperatures. We will briefly discuss about the different sedimentation behaviours between latex particles and CD–PEG complexes.