Synthesis of novel UV-light curable shape-memory polyurethanes

Authors

  • Huan Hoang Dang National Key Laboratory of Polymer and Composite Materials - Ho Chi Minh City, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam
  • Mai Ly Nguyen Thi National Key Laboratory of Polymer and Composite Materials - Ho Chi Minh City, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam
  • Khoi Chau Tran Minh Faculty of Materials Technology, Ho Chi Minh City University of Technology, Ho Chi Minh City, Viet Nam
  • Hoat Mai Phuc Faculty of Materials Technology, Ho Chi Minh City University of Technology, Ho Chi Minh City, Viet Nam
  • Nguyen Khoai Hoang Nguyen Faculty of Materials Technology, Ho Chi Minh City University of Technology, Ho Chi Minh City, Viet Nam
  • Thuy Thu Truong Faculty of Materials Technology, Ho Chi Minh City University of Technology, Ho Chi Minh City, Viet Nam
  • Xuan Huu Mai Faculty of Applied Science, Ho Chi Minh City University of Technology, Ho Chi Minh City, Viet Nam
  • Duc Anh Nguyen Song National Key Laboratory of Polymer and Composite Materials - Ho Chi Minh City, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam
  • Le Thu T. Nguyen Faculty of Materials Technology, Ho Chi Minh City University of Technology, Ho Chi Minh City, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/16228

Keywords:

Aliphatic urethane acrylate, shape-memory, UV light treatment

Abstract

Polyurethanes (PU) are one of the most studied materials due to their high mechanical performance, flexibility and shape-memory ability. When compared to other homopolymer elastomers, polyurethane displays superior toughness and tear resistance due to the inhomogeneity of its microstructural composition. When both soft and hard segments are used in conjunction, it is possible for the elastic matrix to achieve the appropriate modulus and deformation ability by varying the ratio between them. In this article, novel polyurethane materials with pendant stearyl side chains having shape-memory characteristics were synthesized by the UV-light curing process for the first time. The influence of the amount of cross-linkers produced during the polymerizations between aliphatic urethane acrylate (aUA) and stearyl acrylate (SA) under UV light treatment using 2,2-dimethoxyl-2-phenyl acetophenone (DMPA) as photoinitator was investigated. The goal of this research is to combine mechanical strength with sharp memory capabilities in polymeric materials using the above–mentioned unique PU network structure design. The shape recovery rate (Rr), shape retention rate (Rf), tensile strength deformation and reflection-Fourier transform infrared (ATR, FT-IR) were used for characterizing the synthesized materials. The results indicated that a sufficient quantity of SA in the structure (30 wt.%) lead to a nearly 100 percent improvement in shape recovery capacity but slightly decreased the mechanical characteristics of the materials.

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References

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Published

2022-03-11

How to Cite

[1]
H. H. . Dang, “Synthesis of novel UV-light curable shape-memory polyurethanes”, Vietnam J. Sci. Technol., vol. 59, no. 6A, pp. 147–153, Mar. 2022.

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Section

International Symposium on Materials Science and Engineering - ISMSE