Shape memory property of polybutylene adipate-co-terephthalate
ISSN: 0369-9420
Article publication date: 4 November 2022
Issue publication date: 14 March 2024
Abstract
Purpose
The purpose of this study is to investigate the thermomechanical condition on the shape memory property of Polybutylene adipate-co-terephthalate (PBAT). PBAT is a widely researched and rapidly developed biodegradable copolyester. In a tensile test, we found that the fractured PBAT samples had a heat-driven shape memory effect which piqued our interest, and it will lay a foundation for the application of PBAT in new fields (such as heat shrinkable film).
Design/methodology/approach
The shape memory effect of PBAT and the effect of the thermomechanical condition on its shape memory property were confirmed and systematically investigated by a thermal mechanical analyzer and tensile machine.
Findings
The results showed that the PBAT film had broad shape memory transform temperature and exhibited excellent thermomechanical stability and shape memory properties. The shape memory fixity ratio (Rf) of the PBAT films was increased with the prestrain temperature and prestrain, where the highest Rf exceeded 90%. The shape memory recovery ratio (Rr) of the PBAT films was increased with the shape memory recovery temperature and decreased with the prestrain value, and the highest Rr was almost 100%. Moreover, the PBAT films had high shape memory recovery stress which increased with the prestrain value and decreased with the prestrain temperature, and the highest shape memory recovery stress can reach 7.73 MPa.
Research limitations/implications
The results showed that PBAT had a broad shape memory transform temperature, exhibited excellent thermomechanical stability and shape memory performance, especially for the sample programmed at high temperature and had a larger prestrian, which will provide a reference for the design, processing and application of PBAT-based heat shrinkable film and smart materials.
Originality/value
This study confirmed and systematically investigated the shape memory effect of PBAT and the effect of the thermomechanical condition on the shape memory property of PBAT.
Keywords
Acknowledgements
This work was supported by China Postdoctoral Science Foundation (Grant No. 2021M692864), Applied Basic Research Project of Light of Textile (Grant No. J202102), and Zhejiang Provincial Natural Science Foundation of China (Grant No. LGC22E030008).
Conflict of interest: The authors declare no conflict of interest..
Citation
Yu, L., Fu, Y. and Dong, Y. (2024), "Shape memory property of polybutylene adipate-co-terephthalate", Pigment & Resin Technology, Vol. 53 No. 3, pp. 376-387. https://doi.org/10.1108/PRT-09-2022-0109
Publisher
:Emerald Publishing Limited
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