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Shape memory and self‐healing behavior of styrene–butadiene–styrene/ethylene‐methacrylic acid copolymer (SBS/EMAA) elastomers containing ionic interactions
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Wu, Wenjing, Zhou, Yutao, Li, Jie and Wan, Chaoying (2020) Shape memory and self‐healing behavior of styrene–butadiene–styrene/ethylene‐methacrylic acid copolymer (SBS/EMAA) elastomers containing ionic interactions. Journal of Applied Polymer Science, 137 (19). 48666. doi:10.1002/app.48666 ISSN 0021-8995.
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WRAP-shape-memory-self-healing-behavior-styrene-acid-copolymer-ionic-Wan-2019.pdf - Accepted Version - Requires a PDF viewer. Download (1861Kb) | Preview |
Official URL: http://dx.doi.org/10.1002/app.48666
Abstract
Ionic interactions were introduced to styrene–butadiene–styrene (SBS) through blending with ethylene‐methacrylic acid copolymer (EMAA) and zinc oxide (ZnO), and a following in situ neutralization reaction between the carboxyl groups of EMAA and ZnO. The resultant SBS/EMAA (60/40 wt %) blends containing zinc carboxylate crosslinks exhibited high modulus and strong long‐time relaxation characteristics. With 74% of the carboxyl groups neutralized (zinc cation fraction of 1.7 wt %), the tensile strength of the blends was increased from 14.6 to 16.6 MPa, and the stress at 100% extension was increased from 4.8 to 8.1 MPa. The melting temperature of EMAA was utilized to trigger the shape memory behavior of SBS/EMAA, and the reversible ionic bonds endowed SBS with better shape memory and self‐healing performance. The shape‐fixing ratio and recovery ratio of SBS were increased from 90.2 and 56.5% up to 93.3 and 84.2%, respectively. When the cut surfaces of SBS/EMAA/Zn samples were brought back into contact and annealed at 100 °C for 1 h, the strength and the elongation at break were recovered by 36 and 21%, respectively. This introduction of ionic interactions through the EMAA‐ZnO neutralization reactions imparts new functions to SBS thermoplastic elastomers.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Library of Congress Subject Headings (LCSH): | Addition polymerization, Shape memory polymers, Styrene-butadiene rubber | ||||||||
Journal or Publication Title: | Journal of Applied Polymer Science | ||||||||
Publisher: | John Wiley & Sons, Inc. | ||||||||
ISSN: | 0021-8995 | ||||||||
Official Date: | 15 May 2020 | ||||||||
Dates: |
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Volume: | 137 | ||||||||
Number: | 19 | ||||||||
Article Number: | 48666 | ||||||||
DOI: | 10.1002/app.48666 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | "This is the peer reviewed version of the following article: Wu, W., Zhou, Y., Li, J., Wan, C. ( 2019), Shape memory and self‐healing behavior of styrene–butadiene–styrene/ethylene‐methacrylic acid copolymer (SBS/EMAA) elastomers containing ionic interactions. J Appl Polym Sci, 48666., which has been published in final form at http://dx.doi.org/10.1002/app.48666. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions." | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 11 November 2019 | ||||||||
Date of first compliant Open Access: | 5 November 2020 | ||||||||
RIOXX Funder/Project Grant: |
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