The purpose of this paper is twofold. The first is to numerically investigate and reveal the effect of polymer viscoelasticity on the retraction of a deformed drop using the lattice Boltzmann (LB) method and polymer kinetic theory. More importantly, the second is to propose a novel method to evaluate the interfacial tension between polymer melts based on the numerical study. Compared with the conventional deformed drop retraction method (DDRM), the present method is designed to greatly reduce the impact of polymer viscoelasticity on measuring interfacial tension. To verify, the interfacial tension between molten PP and POE is evaluated using the proposed method and obviously closer result to the true value is shown.

中文翻译：

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粘弹性对液滴收缩影响的数值研究和聚合物熔体之间界面张力的评价

本文的目的是双重的。第一个是使用格子玻尔兹曼 (LB) 方法和聚合物动力学理论数值研究和揭示聚合物粘弹性对变形液滴回缩的影响。更重要的是，第二个是基于数值研究提出一种评估聚合物熔体之间界面张力的新方法。与传统的变形液滴收缩法（DDRM）相比，本方法旨在大大降低聚合物粘弹性对测量界面张力的影响。为了验证，使用所提出的方法评估熔融 PP 和 POE 之间的界面张力，并且显示出明显更接近真实值的结果。