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Thermomechanical and shape memory properties of SCF/SBS/LLDPE composites

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Abstract

A thermally triggered shape memory polymer composite was prepared by blending short carbon fiber (SCF) into a blend of poly(styrene-b-butadiene-b-styrene) triblock copolymer (SBS)/linear low density polyethylene (LLDPE) prior to curing. These composites have excellent processability compared with other thermosets. The dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) were investigated to assess the thermomechanical properties of the SCF/SBS/LLDPE composite. Scanning electron microscope (SEM) imaging of the samples was performed to show the distribution of the SCF in the composite. The study specifically focused on the effect of SCF on the shape memory behavior of the SCF/SBS/LLDPE composite. The results indicated that the large amount of SCF significantly improved the mechanical property of the polymer composites while not damaging the shape memory performance. The SCF/SBS/LLDPE composites exhibited excellent shape memory behavior when the SCF content was less than 15.0 wt%. Moreover, the shape fixity ratio and shape recovery time of the SCF/SBS/LLDPE composites increased with the SCF content.

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Authors and Affiliations

  1. Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi’an, 710071, China

    Yong-kun Wang  (王永坤) & Wen-chao Tian

  2. Department of Applied Chemistry, Northwestern Polytehnical University, Xi’an, 710129, China

    Guang-ming Zhu

  3. Department of Polymer materials and Engineering, College of Material Science and Engineering, North China University of Science and Technology, Tangshan, 063009, China

    Jian-qiang Xie

Authors
  1. Yong-kun Wang  (王永坤)
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  2. Wen-chao Tian
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  3. Guang-ming Zhu
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  4. Jian-qiang Xie
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Corresponding author

Correspondence to Yong-kun Wang  (王永坤).

Additional information

This work was financially supported by the National Natural Science Foundation of China (No. 51403050) and Fundamental Research Funds for the Central Universities of China (Nos. JB150408 and XJS15021).

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Wang, Yk., Tian, Wc., Zhu, Gm. et al. Thermomechanical and shape memory properties of SCF/SBS/LLDPE composites. Chin J Polym Sci 34, 1354–1362 (2016). https://doi.org/10.1007/s10118-016-1838-9

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  • DOI: https://doi.org/10.1007/s10118-016-1838-9

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