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Shape Memory Behavior of Carbon Black-reinforced Trans-1,4-polyisoprene and Low-density Polyethylene Composites

1
Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2
Materials Science and Engineering, School of Engineering, University of California at Merced, 5200 North Lake Road, Merced, CA 95343, USA
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(5), 807; https://doi.org/10.3390/polym11050807
Received: 21 March 2019 / Revised: 12 April 2019 / Accepted: 15 April 2019 / Published: 6 May 2019
(This article belongs to the Special Issue Shape Memory Polymers III)
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PDF [1435 KB, uploaded 6 May 2019]
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Abstract

Shape memory composites of trans-1,4-polyisoprene (TPI) and low-density polyethylene (LDPE) with easily achievable transition temperatures were prepared by a simple physical blending method. Carbon black (CB) was introduced to improve the mechanical properties of the TPI/LDPE composites. The mechanical, cure, thermal and shape memory properties of the TPI/LDPE/CB composites were investigated in this study. In these composites, the crosslinked network generated in both the TPI and LDPE portions acted as a fixed domain, while the crystalline regions of the TPI and LDPE portions acted as a reversible domain in shape memory behavior. We found the mechanical properties of composites were promoted significantly with an increase of CB content, accompanied with the deterioration of shape memory properties of composites. When CB dosage was 5 parts per hundred of rubber composites (phr), best shape memory property of composites was obtained with a shape fixity ratio of 95.1% and a shape recovery ratio of 95.0%. View Full-Text
Keywords: trans-1,4-polyisoprene; low-density polyethylene; carbon black; shape memory; reinforce trans-1,4-polyisoprene; low-density polyethylene; carbon black; shape memory; reinforce
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Xia, L.; Gao, H.; Bi, W.; Fu, W.; Qiu, G.; Xin, Z. Shape Memory Behavior of Carbon Black-reinforced Trans-1,4-polyisoprene and Low-density Polyethylene Composites. Polymers 2019, 11, 807.

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