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Micromechanical modeling for viscoplastic properties of enzyme degradable semi-crystalline poly (ε-caprolactone)

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Abstract

This work provide theoretical understandings for the enzyme-degradable PCL, and assist its structural designs and engineering applications. An energy-dependent evolution model is developed to reflect the enzyme-triggered decrystallization of crystals and the further dissolution by applying a chain-broken chemical reaction. Then, the mechanical properties of the enzyme-degradable semicrystalline PCL is modelled through the homogenization-based procedure by the volume-average of a collection of laminated inclusions with crystals and amorphous phase. A dual-phase-lag diffusion model is advanced to solve the enzyme concentrations in the PCL. The model is calibrated by the experiments and then applied for the chemomechanical properties of the PCL when under enzyme conditions. Some numerical examples are conducted to discuss effects of the enzyme concentration and the crystallinity on the crystallographic axe evolution as well as the overall chemomechanical properties of the semicrystalline PCL.

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Acknowledgments

The authors would like to acknowledge with great gratitude for the supports of the National Science Foundation of China (Grant No: 11772124), the Science Foundation of Hunan Province (Grant No: 2018JJ3027) and National Science Foundation of China for Outstanding Youth (Grant No: 11922206).

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Authors and Affiliations

  1. Department of Engineering Mechanics, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan, China

    Xinwei Yang, Cheng Yang, Shujuan Hou & Yiqi Mao

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  1. Xinwei Yang
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  2. Cheng Yang
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  3. Shujuan Hou
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  4. Yiqi Mao
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Correspondence to Yiqi Mao.

Additional information

Yiqi Mao is an Associate Professor of Hunan University. He received his Ph.D. in Engineering Mechanics from Hunan University. His research interests include shape-memory polymer, self-healing materials, deformation theory and etc.

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Yang, X., Yang, C., Hou, S. et al. Micromechanical modeling for viscoplastic properties of enzyme degradable semi-crystalline poly (ε-caprolactone). J Mech Sci Technol 35, 5081–5097 (2021). https://doi.org/10.1007/s12206-021-1025-y

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  • DOI: https://doi.org/10.1007/s12206-021-1025-y

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