Analysis by the two-fluids model of the dynamical behavior of a viscoelastic fluid probed by dynamic light scattering.
Analysis by the two-fluids model of the dynamical behavior of a viscoelastic fluid probed by dynamic light scattering.
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通过动态光散射探测粘弹性流体的动力学行为的双流体模型分析。
DOI：
10.1021/la035678h
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
J. Appell
中科院分区：
文献类型：
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作者：
E. Michel;G. Porte;L. Cipelletti;J. Appell
用动态光散射方法研究了一个模型瞬态网络的动力学性质。该网络由遥爪聚合物（具有两个接枝的疏水粘着剂的改性亲水聚合物）连接的微乳液液滴形成。我们比较了两个相似网络的特性，但疏水性粘着剂在液滴中的停留时间不同。结果解释根据所谓的双流体模型，这是最初开发的半稀释聚合物溶液，我们在这里扩展到任何麦克斯韦粘弹性介质，其特征在于其弹性模量和终端时间测量流变学。这个模型被发现描述一致和定量的实验观察。
The dynamic properties of a model transient network have been studied by dynamic light scattering. The network is formed by microemulsion droplets linked by telechelic polymers (modified hydrophilic polymers with two grafted hydrophobic stickers). We compare the properties of two networks that are similar but for the residence time of the hydrophobic stickers in the droplets. The results are interpreted according to the so-called two-fluids model, which was initially developed for semidilute polymer solutions and which we extend here to any Maxwellian viscoelastic medium characterized by its elastic modulus and terminal time as measured by rheology. This model is found to describe consistently and quantitatively the experimental observations.