Interpreting Molecular Descriptors for Glass Transition Temperature Prediction and Design of Polyimides
Tingting Cui, Heng Liu, Xin Liu, Yonggang Min · 2025
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Description
Polyimides are heat-proof plastics used in microelectronics, and their glass transition temperature decides where they can serve. Cui and co-authors build a model that predicts this temperature from molecular structure, and just as much, explains itself.
From a curated dataset they used a genetic algorithm with linear regression to pick seven molecular descriptors, numbers that summarize shape and charge. The model predicted well on new cases and passed strict statistical checks. The authors then read the descriptors through free volume theory: some, by branching the molecule, open gaps that lower the transition point, while charge-related ones act through forces between chains. The paper turns those readings into design rules for making polyimides that run hotter, or that process more easily.
Catalog record
| CREATOR | Tingting Cui, Heng Liu, Xin Liu, Yonggang Min |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 29 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |