Citation: Mi-Qin Zhan, Ke-Ke Yang, Yu-Zhong Wang. Shape-memory poly(p-dioxanone)-poly(ε-caprolactone)/sepiolite nanocomposites with enhanced recovery stress[J]. Chinese Chemical Letters, ;2015, 26(10): 1221-1224. doi: 10.1016/j.cclet.2015.07.019 shu

Shape-memory poly(p-dioxanone)-poly(ε-caprolactone)/sepiolite nanocomposites with enhanced recovery stress

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Center for Degradable and Flame-Retardant Polymeric Materials(ERCEPM-MOE), National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China

Corresponding author: Ke-Ke Yang, Yu-Zhong Wang,
Received Date: 2 June 2015
Available Online: 30 June 2015
Fund Project: This work was supported financially by the National Science Foundation of China (Nos. 51473096, 51421061, J1103315) (Nos. 51473096, 51421061, J1103315)

Shape-memory poly(p-dioxanone)-poly(ε-caprolactone)/sepiolite (PPDO-PCL/OSEP) nanocomposites with different OSEP nanofiber loading were fabricated by chain-extending the PPDO-diol and PCL/OSEP precursors. The precursors and the composites were characterized by ¹H NMR, FT-IR, GPC, SEM and TEM. The results demonstrate that a part of PCL segments grafted on the surface of OSEP and composites display a fine dispersion of OSEP fiber in nanoscale with low OSEP content. The shape memory effect (SME) was evaluated by DMA, the results reveal that the PPDO-PCL/OSEP nanocomposites exhibit desirable shape-memory performance. The reinforcement of composites by incorporation of trace OSEP nanofiber evokes an effective improvement in shape-memory recovery stress.
- Poly(p-dioxanone),
- Poly(ε-caprolactone),
- Sepiolite,
- Shape-memory nanocomposite
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沈阳化工大学材料科学与工程学院沈阳 110142