Preparation and Performance of Glycerol Monostearate-based Self-healing Polyurethane UV-cured Films

ZHU Zengke; TANG Xiaoman; HUANG Chuolin; XUE Meng; CHEN Feile; YUAN Teng

doi:10.19554/j.cnki.1001-3563.2025.21.003

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (21) : 22-30. DOI: 10.19554/j.cnki.1001-3563.2025.21.003

Advanced Materials

Preparation and Performance of Glycerol Monostearate-based Self-healing Polyurethane UV-cured Films

ZHU Zengke¹, TANG Xiaoman¹, HUANG Chuolin¹, XUE Meng², CHEN Feile¹, YUAN Teng^1*

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Abstract

The work aims to develop bio-based polyurethane materials with inherent self-healing properties, thereby maintain the functionality of materials, extending their lifespan and enhancing their sustainability. A series of bio-based polyurethane (PU) UV-cured films with different imine bond concentrations were successfully fabricated with glycerin monostearate (GMS) polyol and a diamine containing dynamic imine bonds (T-NH) as raw materials. By systematically varying the T-NH content, these films underwent comprehensive characterization, including assessments of their thermal stability, and their self-healing performance. The influence of T-NH content on these properties was meticulously investigated to identify the optimal formulation that yielded superior self-healing efficiency. The tensile strength of the films was observed to improve with an increase in T-NH content, reaching a maximum tensile strength of 0.84 MPa. Remarkably, the bio-based PU UV-cured films demonstrated a self-healing efficiency exceeding 60% at room temperature. Elevating the healing temperature to 50 °C further boosted this efficiency to over 90%. Impressively, the films were capable of undergoing self-healing at the same damaged site for up to four consecutive cycles. Additionally, the cured films exhibited favorable thermal stability, commendable solvent resistance, and appropriate hardness. Comparative analysis revealed that the PUA-B3 formulation presented the most balanced and superior overall performance. This study presents a bio-based UV-curable film with excellent low-temperature self-healing capabilities and an efficient, eco-friendly forming method, making it a highly promising candidate for sustainable packaging applications.

Key words

glycerin monostearate / imine bond / UV-curable / self-healing / polyurethane

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ZHU Zengke, TANG Xiaoman, HUANG Chuolin, XUE Meng, CHEN Feile, YUAN Teng. Preparation and Performance of Glycerol Monostearate-based Self-healing Polyurethane UV-cured Films[J]. Packaging Engineering. 2025, 46(21): 22-30 https://doi.org/10.19554/j.cnki.1001-3563.2025.21.003

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