Login / Signup

γ-Ray-driven degradation of robust epoxy thermosets.

Zhen HuNingdi XuZiqiang AnBaolong WangFei LuBo TianGang YaoYingying LiuLi LiuYudong Huang
Published in: Materials horizons (2022)
The γ ray is a promising candidate for thermoset material degradation owing to its high energy, strong penetrability, low carbon emission and economy. However, the development of irradiation degradation technology is limited by irradiation cross-linking and irradiation degradation simultaneously, and a controllable degradation remains a considerable challenge. Herein, we exploit stable conjugated linkages, phenyl imine conjugated N-N bonds, for the γ-ray-induced controllable cleavage of polymer chains. Using this distinctive conjugated structure, we design γ-ray-responsive epoxy networks that can be readily degraded at a dose of 40 kGy at room temperature and show mechanical properties, thermal properties and chemical resistance comparable to commodity epoxy resins. Additionally, the incorporation of a radical scavenger can reduce the uncontrolled recombination of degradation segments, which further accelerates the degradation of the epoxy thermosets.
Keyphrases
  • room temperature
  • drug delivery
  • ionic liquid
  • endothelial cells
  • high glucose
  • oxidative stress
  • diabetic rats
  • dna binding