Transfer Learning-Enhanced Prediction of Glass Transition Temperature in Bismaleimide-Based Polyimides Article Swipe

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Ziqi Wang , Yu Liu , Xintong Xu , Jiale Zhang , Zongjin Li , Lei Zheng , Kang Peng ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.20944/preprints202505.1953.v1

The glass transition temperature (Tg) is a pivotal parameter governing the thermal and mechanical properties of bismaleimide-based polyimide (BMI) resins. However, limited experimental data for BMI systems posed significant challenges for predictive modeling. To address this gap, this study introduces a hybrid modeling framework leveraging transfer learning. Specifically, a multilayer perceptron (MLP) deep neural network is pre-trained on a large-scale polymer database and subsequently fine-tuned on a small-sample BMI dataset. Complementing this approach, six interpretable machine learning algorithms—Random Forest, Ridge Regression, K-Nearest Neighbors, Bayesian Regression, Support Vector Regression, and Extreme Gradient Boosting —are employed to construct transparent predictive models. SHapley Additive exPlanations (SHAP) analysis is further utilized to quantify the relative contributions of molecular descriptors to Tg. Results demonstrate that the transfer learning strategy achieves superior predictive accuracy in data-scarce scenarios compared to direct training on BMI dataset. SHAP analysis identified charge distribution inhomogeneity, molecular topology, and molecular surface area properties as the major influences on Tg. This integrated framework not only improves the prediction performance, but also provides feasible insights into molecular structure design, laying a solid foundation for rational engineering of high-performance BMI resins.

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Glass transition Materials science Composite material Thermodynamics Engineering physics Physics Polymer

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Type: preprint
Language: en
Landing Page: https://doi.org/10.20944/preprints202505.1953.v1
PDF: https://www.preprints.org/frontend/manuscript/d47d8fb8ee63fe697adcfa34207a88d5/download_pub
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DOI: https://doi.org/10.20944/preprints202505.1953.v1

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Title: Transfer Learning-Enhanced Prediction of Glass Transition Temperature in Bismaleimide-Based Polyimides

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Type: preprint

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Language: en

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Publication year: 2025

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Publication date: 2025-05-26

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Authors: Ziqi Wang, Yu Liu, Xintong Xu, Jiale Zhang, Zongjin Li, Lei Zheng, Kang Peng

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Landing page: https://doi.org/10.20944/preprints202505.1953.v1

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Concepts: Glass transition, Materials science, Composite material, Thermodynamics, Engineering physics, Physics, Polymer

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