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Filler effects inspired high performance polyurethane elastomer design: segment arrangement control.
Jiaxin Shi1, Tianze Zheng1, Zhiqi Wang1
1Advanced Materials Laboratory of Ministry of Education (MOE), Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China. jun-xu@mail.tsinghua.edu.cn.
Materials Horizons
|July 16, 2024
Summary
Researchers enhanced thermoplastic polyurethane (TPU) elastomers by optimizing hard/soft segment arrangement, boosting strength and toughness. This strategy also enabled the creation of durable ionogel sensors with balanced properties.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- High strength and toughness in elastomers are crucial for advanced applications.
- Existing elastomer research often involves complex synthesis and costly monomers, limiting practical use.
- Thermoplastic polyurethane (TPU) elastomers are widely used but require property enhancement.
Purpose of the Study:
- To develop a facile strategy for significantly improving the mechanical properties of thermoplastic polyurethane (TPU) elastomers.
- To investigate the role of hard/soft segment arrangement in enhancing elastomer performance.
- To create advanced elastomers and durable ionogel sensors with tunable properties.
Main Methods:
- Designing the arrangement of hard and soft segments within traditional TPU chemical compositions.
- Utilizing the synergetic effect of weak hard segments to upgrade normal TPU elastomers.
- Employing a combination of experimental techniques and computational simulations.
- Incorporating ionic liquids into the modified elastomer to form ionogel sensors.
Main Results:
- A strategy was developed to remarkably enhance the mechanical properties of TPU elastomers.
- Optimizing the sequence length of hard/soft segments maximized the relative surface area of hard domains, leading to enhanced strength and toughness.
- The modified elastomer, when mixed with an ionic liquid, formed a durable ionogel sensor exhibiting balanced mechanical strength and ionic conductivity.
- The proposed strategy is easy to implement and utilizes conventional chemical compositions.
Conclusions:
- A novel and straightforward strategy effectively enhances the mechanical properties of TPU elastomers by controlling segment arrangement.
- This approach offers a new pathway for developing high-performance elastomers and functional materials like ionogel sensors.
- The findings demonstrate the potential of synergistic effects and optimized domain morphology for material property enhancement.
