PolyWeight: A free and open-source program for determination of molecular weight distribution of linear polymers

This paper introduces PolyWeight, a Python software featuring a user-friendly graphical user interface (GUI), which offers two distinct approaches for MWD determination: an analytical relation-based method and a parametric model-based method. By utilizing dynamic moduli, users can calculate MWD as well as molecular weight averages such as M_n, M_w, and M_z. The functionality of PolyWeight is validated using synthetic data and real data obtained from the literature, exhibiting good agreement. Log files and datasets used in this work are available on GitHub.

本文介绍了一款名为PolyWeight的Python软件，该软件搭载用户友好的图形用户界面（Graphical User Interface, GUI），可提供两种截然不同的分子量分布（Molecular Weight Distribution, MWD）测定方法：基于解析关系式的方法与基于参数化模型的方法。用户可借助动态模量计算得到分子量分布，以及数均分子量（Number-average molecular weight, M_n）、重均分子量（Weight-average molecular weight, M_w）与Z均分子量（Z-average molecular weight, M_z）等平均分子量参数。本研究通过合成数据与公开文献中的实测数据对PolyWeight的功能进行了验证，结果显示二者具有良好的一致性。本研究中使用的日志文件与数据集均可在GitHub平台获取。