Preparation and properties of triple shape memory composites based on trans-polyisopren/poly(ethylene-co-vinyl acetate)

XIN Hua; LI Yangfan; PENG Qi; CHEN Yue; LI Xinqi

doi:10.13801/j.cnki.fhclxb.20221021.002

Volume 40 Issue 7

Apr. 2023

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Article Navigation > Acta Materiae Compositae Sinica > 2023 > 40(7): 4039-4047

XIN Hua, LI Yangfan, PENG Qi, et al. Preparation and properties of triple shape memory composites based on trans-polyisopren/poly(ethylene-co-vinyl acetate)[J]. Acta Materiae Compositae Sinica, 2023, 40(7): 4039-4047. doi: 10.13801/j.cnki.fhclxb.20221021.002

Citation:

XIN Hua, LI Yangfan, PENG Qi, et al. Preparation and properties of triple shape memory composites based on trans-polyisopren/poly(ethylene-co-vinyl acetate)[J]. Acta Materiae Compositae Sinica, 2023, 40(7): 4039-4047. doi: 10.13801/j.cnki.fhclxb.20221021.002

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Preparation and properties of triple shape memory composites based on trans-polyisopren/poly(ethylene-co-vinyl acetate)

doi: 10.13801/j.cnki.fhclxb.20221021.002

College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China

Funds: National Natural Science Foundation of China (51603117)

Received Date: 2022-07-21
Accepted Date: 2022-10-16
Rev Recd Date: 2022-09-24

Available Online: 2022-10-21

Publish Date: 2023-07-15

Abstract

Abstract

The TPI-EVA triple shape memory composites were prepared by compounding trans-polyisoprene and poly(ethylene-co-vinyl acetate) (TPI-EVA), and designed cross-linking reaction of dicumyl peroxide to connect the two phases. The TPI-EVA composites were characterized by rheometer, universal testing machine, XRD, DSC and dynamic thermomechanical analyzer (DMA). The effects of the mass ratio of EVA on the mechanical properties, phase structure, crystalline properties and triple shape memory properties of TPI-EVA composites were studied. The results show that with the increase of the mass ratio of EVA, the crystallization temperature (T_c) of TPI decreases from 14.7℃ to 8.2℃, and the T_c of EVA increase slightly. SEM test showed that with the increases of EVA mass ratio, the phase interface of the composites changes from smooth to rough; DMA test shows that the increase of EVA mass ratio increases the first temporary shape memory fixation rate of the samples from 57.6% to 88.5%. Moreover, the TPI-EVA composites exhibit excellent mechanical properties, the tensile strength is as high as 30.3 MPa and the elongation at break reaches 490%.
- tripe shape memory effect,
- trans-polyisopren,
- poly(ethylene-co-vinyl acetate),
- crystallization,
- mechanical properties
Long Abstrsct
Innovation Points

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References(31)

References

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