A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application
Developing eco-friendly, flexible thermoplastic elastomeric foams based on poly(styrene-(ethylene-co-butylene)-styrene) (SEBS) is a challenging task because of its poor melt strength. A promising approach to overcome this challenge is the use of synergistic technologies, such as combination of irrad...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology
2019-11-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0010019&mi=cd |
| _version_ | 1818084375037739008 |
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| author | Z. X. Zhang X. R. Dai L. Zou S. B. Wen T. K. Sinha H. Li |
| author_facet | Z. X. Zhang X. R. Dai L. Zou S. B. Wen T. K. Sinha H. Li |
| author_sort | Z. X. Zhang |
| collection | DOAJ |
| description | Developing eco-friendly, flexible thermoplastic elastomeric foams based on poly(styrene-(ethylene-co-butylene)-styrene) (SEBS) is a challenging task because of its poor melt strength. A promising approach to overcome this challenge is the use of synergistic technologies, such as combination of irradiation, supercritical fluid foaming, and steam-chest molding technologies. Herein, foamed beads were produced from pre-crosslinked SEBS beads using supercritical nitrogen as blowing agent, followed by subsequently efficient steam-chest molding to obtain midsole part. The crosslinking was accomplished under the assistance of electron beam. The rheology properties and foaming behavior reveals that the viscosity and modulus of the matrix increase with the increase of crosslinking resulting from increasing the irradiation dose (ID). With increasing the ID, successful foaming with larger expansion and improved cell morphology was achieved. SEBS bead foams were successfully obtained from 65 kGy-derived pre-crosslinked beads through steam-chest molding which showed a specific gravity of 0.252 g・cm–3 and comparable/superior mechanical properties to/than that of commercial thermoplastic polyurethane (TPU) or ethylene-vinyl acetate copolymer (EVA) foams. Especially, the higher elasticity and resilience of SEBS foams meet well the desirable properties for footwear application which supports SEBS to be an alternative for TPU or EVA. |
| first_indexed | 2024-12-10T19:52:53Z |
| format | Article |
| id | doaj.art-5faf10c674154413879e535c372e8c60 |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-10T19:52:53Z |
| publishDate | 2019-11-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-5faf10c674154413879e535c372e8c602022-12-22T01:35:44ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2019-11-01131194895810.3144/expresspolymlett.2019.83A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear applicationZ. X. ZhangX. R. DaiL. ZouS. B. WenT. K. SinhaH. LiDeveloping eco-friendly, flexible thermoplastic elastomeric foams based on poly(styrene-(ethylene-co-butylene)-styrene) (SEBS) is a challenging task because of its poor melt strength. A promising approach to overcome this challenge is the use of synergistic technologies, such as combination of irradiation, supercritical fluid foaming, and steam-chest molding technologies. Herein, foamed beads were produced from pre-crosslinked SEBS beads using supercritical nitrogen as blowing agent, followed by subsequently efficient steam-chest molding to obtain midsole part. The crosslinking was accomplished under the assistance of electron beam. The rheology properties and foaming behavior reveals that the viscosity and modulus of the matrix increase with the increase of crosslinking resulting from increasing the irradiation dose (ID). With increasing the ID, successful foaming with larger expansion and improved cell morphology was achieved. SEBS bead foams were successfully obtained from 65 kGy-derived pre-crosslinked beads through steam-chest molding which showed a specific gravity of 0.252 g・cm–3 and comparable/superior mechanical properties to/than that of commercial thermoplastic polyurethane (TPU) or ethylene-vinyl acetate copolymer (EVA) foams. Especially, the higher elasticity and resilience of SEBS foams meet well the desirable properties for footwear application which supports SEBS to be an alternative for TPU or EVA.http://www.expresspolymlett.com/letolt.php?file=EPL-0010019&mi=cdIndustrial applicationsirradiationSEBSbead foamingflexible foam |
| spellingShingle | Z. X. Zhang X. R. Dai L. Zou S. B. Wen T. K. Sinha H. Li A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application eXPRESS Polymer Letters Industrial applications irradiation SEBS bead foaming flexible foam |
| title | A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application |
| title_full | A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application |
| title_fullStr | A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application |
| title_full_unstemmed | A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application |
| title_short | A developed, eco-friendly, and flexible thermoplastic elastomeric foam from SEBS for footwear application |
| title_sort | developed eco friendly and flexible thermoplastic elastomeric foam from sebs for footwear application |
| topic | Industrial applications irradiation SEBS bead foaming flexible foam |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0010019&mi=cd |
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