The Mesoscopic Constitutive Equations for Polymeric Fluids and Some Examples of Viscometric Flows

• 作者: Gregory Pyshnograi Hyder Nadom Aziz Al Joda Ivan Pyshnograi
• 来源期刊: 力学国际期刊(英文)
• 学科: 化学
• 关键词: RHEOLOGY Linear Polymer MELTS and Solutions CONSTITUTIVE Equation MESOSCOPIC Approach
• 年，卷（期）: 2012,（1）
• 页码范围: 19-27
• 页数: 9页
• 分类号: O6

摘要

Constitutive equations for melts and concentrated solutions of linear polymers are derived as consequences of dynamics of a separate macromolecule. The model is investigated for viscometric flows. It was shown that the model gives a good description of non-linear effects of simple shear polymer flows: viscosity anomalies, first and second normal stresses, non-steady shear stresses.