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Synthesis and thermo-mechanical investigation of macrodiol-based shape memory polyurethane elastomers

  • Shazia Naheed , Mohammad Zuber and Mehdi Barikani
Published/Copyright: May 30, 2017
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 108 Issue 6

Abstract

Shape memory polyurethanes have been prepared from polycaprolactone diol, 1,6-hexanediol and 4,4′-dicyclohexylmethane diisocyanate. The structural identification of the final polymer was confirmed by Fourier transform infrared spectroscopy. The thermo-mechanical history was studied using thermo-gravimetric analysis, differential scanning calorimetry, dynamic mechanical thermal analysis and shape memory testing by tensile cyclic loading using a temperature controlled chamber. The absence of any peak corresponding to functional groups of monomers confirmed the completion of reaction. The thermo-grams showed a gradual decrease in the thermal transition with increasing crystallinity, with corresponding increase in the molecular weight of macrodiol used as soft segments. The highest value of shape recovery of the sample (PCL, 4 000 g mol−1) obtained was 96%, and retention up to 85%.

Keywords: Polycaprolactone diol; Shape memory polyurethane; Thermal analysis
*Correspondence address, Shazia Naheed, Department of Chemistry, Government College University, Faisalabad, Faisalabad, 38030, Pakistan, Tel.: +92312 9655311, E-mail:

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Received: 2016-11-11
Accepted: 2017-02-09
Published Online: 2017-05-30
Published in Print: 2017-06-12

© 2017, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111498
Keywords for this article
Polycaprolactone diol; Shape memory polyurethane; Thermal analysis

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. The thermodynamic stability induced by solute co-segregation in nanocrystalline ternary alloys
  5. A general approach on the modelling of incubation in ferrite transformation using non-isothermal kinetics data for 22MnB5 steel
  6. Effect of aging on microstructure and mechanical properties of ZnAl15Cu1 alloy for wrought applications
  7. Deformation behavior and texture randomization of Mg–Zn–Gd alloys reinforced with icosahedral quasicrystal
  8. Atomic mobility in liquid and fcc Al–Si–Mg–RE (RE = Ce, Sc) alloys and its application to the simulation of solidification processes in RE-containing A357 alloys
  9. Reactive wetting of Ti-6Al-4V alloy by molten Al 4043 and 6061 alloys at 600–700°C
  10. Laser surface treatment of S235JRC carbon steel with Co2B nanocrystals
  11. Research and analysis of stress distribution in multilayers of coated tools
  12. Observations of freeze layer formation during heat balance shifts in cryolite-based smelting bath
  13. Synthesis and thermo-mechanical investigation of macrodiol-based shape memory polyurethane elastomers
  14. DGM News
  15. DGM News
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