Preparation and Rheological Characterization of Water-Soluble Boger Fluids

IF 2.218 Q2 Chemistry

Chemical Data Collections Pub Date : 2023-12-28 DOI:10.1016/j.cdc.2023.101112

Amanjot Kaur, Amit Sobti, Ravinder Kumar Wanchoo

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Abstract

The primary focus of the study is to prepare and characterize water-soluble Boger fluids as they offer improved handling characteristics. The fluids have been prepared in the concentration range of 0.02–0.05 % (wt/vol.) Polyacrylamide (PAA) in a mixture of 80 % glycerol and 20 % distilled water by volume. Dynamic and steady shear data are represented in the temperature range of 15–35 °C. The shear mode data were fitted to power law model to calculate the flow consistency index (K) and flow behavior index (n). With increase in PAA concentration, the fluid character shifts from Boger to shear thinning viscoelastic fluid. Fluid relaxation time (λ) was calculated by fitting the oscillatory data to four mode Maxwell model. Empirical equations for the prediction of K, n, and λ are proposed by incorporating simultaneous effect of polymer concentration and temperature. Presented data could be of great use in unit operations such as fixed and fluidized beds dealing with Boger fluids.

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水溶性博格流体的制备和流变特性分析

这项研究的主要重点是制备和表征水溶性 Boger 流体，因为它们具有更好的处理特性。在体积分数为 80% 的甘油和 20% 的蒸馏水混合物中制备的聚丙烯酰胺浓度范围为 0.02-0.05%（重量/体积）。动态和稳定剪切数据的温度范围为 15-35°C。剪切模式数据被拟合到幂律模型中，以计算流动稠度指数（K）和流动行为指数（n）。随着 PAA 浓度的增加，流体特性从 Boger 变为剪切稀化粘弹性流体。通过将振荡数据拟合到四元素麦克斯韦模型，计算出了流体弛豫时间（λ）。通过同时考虑聚合物浓度和温度的影响，提出了预测 K、n 和 λ 的经验方程。所提供的数据对处理博格流体的固定床和流化床等单元操作非常有用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Data Collections Chemistry-Chemistry (all)

CiteScore

6.10

自引率

0.00%

发文量

169

审稿时长

24 days

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