Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers
This study examines the effect of thermoplastic elastomers (TPE) on the physical, mechanical, and dynamic impact properties of ethylene-vinyl acetate (EVA) copolymer foam using traditional chemical blowing process. The blending of EVA with TPE aims to improve both physical and dynamic impact cushion...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/173150 |
| _version_ | 1811678118969081856 |
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| author | Chang, Boon Peng Kurkin, Anatoli Kashcheev, Aleksandr Leong, Kah Fai Tok, Alfred ling Yoong Lipik, Vitali |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Chang, Boon Peng Kurkin, Anatoli Kashcheev, Aleksandr Leong, Kah Fai Tok, Alfred ling Yoong Lipik, Vitali |
| author_sort | Chang, Boon Peng |
| collection | NTU |
| description | This study examines the effect of thermoplastic elastomers (TPE) on the physical, mechanical, and dynamic impact properties of ethylene-vinyl acetate (EVA) copolymer foam using traditional chemical blowing process. The blending of EVA with TPE aims to improve both physical and dynamic impact cushioning to achieve optimal energyreturn EVA foam. Comparative analysis reveals that adding a 10–20 wt% fraction of propylene elastomer (POE) to EVA significantly reduces foam density while maintaining dynamic energy absorption and energy return. However, high POE content (30 wt%) leads to inferior mechanical and dynamic impact properties due to excessive softness. Blending EVA with terpolymer elastomer (PTW) enhances compression strength (∼16%), hardness (∼27%), and dynamic energy return (∼9%). EVA/POE/PTW hybrid blend foams display intermediate properties. The impact behaviors of foams vary between high and low dynamic impact loading rates. The presence of TPE enhances cushioning by absorbing impact forces through deformation, with EVA/PTW exhibiting remarkably improved rebound properties. Impact peak force decreases linearly with increasing PTW content. Foam morphology, including phase compatibility, cell size and density, plays a role in determining dynamic impact properties. Hard segmented TPE store more energy and quickly recover, resulting in a higher rebound effect as compared to soft segmented TPE. Incorporating TPE provides the ability to control the EVA foam's dynamic rebound, and impact cushioning, expanding its potential in sports-related applications. |
| first_indexed | 2024-10-01T02:48:11Z |
| format | Journal Article |
| id | ntu-10356/173150 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:48:11Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1731502024-01-15T07:34:13Z Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers Chang, Boon Peng Kurkin, Anatoli Kashcheev, Aleksandr Leong, Kah Fai Tok, Alfred ling Yoong Lipik, Vitali School of Materials Science and Engineering School of Mechanical and Aerospace Engineering Engineering::Materials Ethylene-Vinyl Acetate Thermoplastic Elastomer This study examines the effect of thermoplastic elastomers (TPE) on the physical, mechanical, and dynamic impact properties of ethylene-vinyl acetate (EVA) copolymer foam using traditional chemical blowing process. The blending of EVA with TPE aims to improve both physical and dynamic impact cushioning to achieve optimal energyreturn EVA foam. Comparative analysis reveals that adding a 10–20 wt% fraction of propylene elastomer (POE) to EVA significantly reduces foam density while maintaining dynamic energy absorption and energy return. However, high POE content (30 wt%) leads to inferior mechanical and dynamic impact properties due to excessive softness. Blending EVA with terpolymer elastomer (PTW) enhances compression strength (∼16%), hardness (∼27%), and dynamic energy return (∼9%). EVA/POE/PTW hybrid blend foams display intermediate properties. The impact behaviors of foams vary between high and low dynamic impact loading rates. The presence of TPE enhances cushioning by absorbing impact forces through deformation, with EVA/PTW exhibiting remarkably improved rebound properties. Impact peak force decreases linearly with increasing PTW content. Foam morphology, including phase compatibility, cell size and density, plays a role in determining dynamic impact properties. Hard segmented TPE store more energy and quickly recover, resulting in a higher rebound effect as compared to soft segmented TPE. Incorporating TPE provides the ability to control the EVA foam's dynamic rebound, and impact cushioning, expanding its potential in sports-related applications. 2024-01-15T07:34:13Z 2024-01-15T07:34:13Z 2024 Journal Article Chang, B. P., Kurkin, A., Kashcheev, A., Leong, K. F., Tok, A. L. Y. & Lipik, V. (2024). Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers. Materials Today Communications, 38, 107888-. https://dx.doi.org/10.1016/j.mtcomm.2023.107888 2352-4928 https://hdl.handle.net/10356/173150 10.1016/j.mtcomm.2023.107888 2-s2.0-85180539939 38 107888 en Materials Today Communications © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Materials Ethylene-Vinyl Acetate Thermoplastic Elastomer Chang, Boon Peng Kurkin, Anatoli Kashcheev, Aleksandr Leong, Kah Fai Tok, Alfred ling Yoong Lipik, Vitali Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers |
| title | Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers |
| title_full | Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers |
| title_fullStr | Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers |
| title_full_unstemmed | Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers |
| title_short | Enhancing dynamic impact performance and cushioning of EVA copolymer foams with thermoplastic elastomers |
| title_sort | enhancing dynamic impact performance and cushioning of eva copolymer foams with thermoplastic elastomers |
| topic | Engineering::Materials Ethylene-Vinyl Acetate Thermoplastic Elastomer |
| url | https://hdl.handle.net/10356/173150 |
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