Multi-sample micro-slit rheometry
Multi-sample micro-slit rheometry
复制标题
多样品微缝流变测量
DOI：
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
K. Migler
中科院分区：
文献类型：
--
作者：
D. Moon;A. J. Bur;K. Migler
我们开发了一种多样品微缝流变仪（MMR），能够在广泛的温度，粘度和剪切速率范围内进行测量。该仪器机械结构简单，流量由外部气体压力产生，通过流锋的光学跟踪来测量剪切速率。在目前的实现中，每个样品所需的体积约为20μL，我们同时测量四个样品。我们通过测量三种典型聚合物的流动曲线（粘度与剪切速率）来证明MMR的性能：聚二甲基硅氧烷熔体、聚异丁烯溶液和聚苯乙烯熔体。我们采用标准的数据校正方法来考虑剪切变薄和入口/流锋效应。我们报告了高水平的准确性和精密度。该仪器将特别有用的情况下，多样品，有限的材料数量，当光学访问是有用的。
We have developed a multi-sample micro-slit rheometer (MMR) which is capable of measurements over a broad range of temperatures, viscosities and shear rates. The instrument is mechanically simple as the flow is generated by external gas pressure and the shear rate is measured through optical tracking of the flow front. In the current implementation, the required volume of each sample is approximately 20μL and we measure four samples simultaneously. We demonstrate the performance of the MMR by measurement of the flow curves (viscosity versus shear rate) of three representative polymers: A polydimethylsiloxane melt, a polyisobutylene solution, and a polystyrene melt. We adapt standard data correction methods to account for shear-thinning and entry/flow-front effects. We report a high level of accuracy and precision. This instrument will be particularly useful in cases of multiple samples, limited material quantity, and when optical access is useful.
影响因子：
7.4
作者：
Srivastava, N;Burns, MA
通讯作者：
Burns, MA