What question did this study set out to answer?

The aim is to enhance phase equilibrium data analysis for polymer mixtures using an improved tool.

June 29, 2026Open Access

Version 2- PEPFinder: A MATLAB-based tool for searching phase equilibrium pairs of polymer mixtures

MYMiao YeLiaoning Normal University YYYong-Biao YangLiaoning Normal University HLHonglei LiHunan Police Academy

Key Points

The aim is to enhance phase equilibrium data analysis for polymer mixtures using an improved tool.
Developed an updated MATLAB-based tool called PEPFinder for phase equilibrium analysis.
Focused on the identification of N-component polymer mixtures.
Utilized SAFT-type equations of state for data fitting.
Successfully identified phase equilibrium pairs for N-component polymer systems.
Improved accuracy in determining molecular parameters compared to earlier versions.
The tool enhances the capability to efficiently analyze complex mixture behaviors.

Abstract

Phase equilibrium data serve as the fundamental basis for fitting molecular parameters of SAFT-type equations of state (SAFT-EOSs). An original MATLAB-based package (PEPFinder) was developed to identify two-component phase equilibrium pairs; herein, an updated version of PEPFinder is introduced to locate the phase equilibrium pairs for N-component polymers.

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