Mechanical and Degradation Properties of Castor Oil-Based Polyurethane
Yasaman Ganji1, Mehran Kasra2, Soheila Salahshour Kordestani3
1Yasaman Ganji, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
2Mehran Kasra, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
3Soheila Salahshour Kordestani, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran. The authors gratefully acknowledge the financial support of this research by Iran National Science Foundation.
Manuscript received on 15 April 2015 | Revised Manuscript received on 25 April 2015 | Manuscript Published on 30 April 2015 | PP: 207-213 | Volume-4 Issue-4, April 2015 | Retrieval Number: D3950044415/15©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Castor oil based polyurethanes (PU) with different degradation and mechanical properties have many applications both in industry and medicine. In this study, polyethylene glycol (PEG), castor oil (CO) and 1, 6 -hexamethylene diisocyanate (HDI) were used for synthesis of different kinds of vegetable oil based polyurethanes. Five different chemical compositions of PU with different molar ratios of PEG, CO, and HDI were prepared and casted as solid and porous samples. The samples were then characterized by Fourier transform infrared spectroscopy, dynamic mechanical thermal analysis, and differential scanning calorimetry. Changes in mechanical properties, degradation rate, density, and contact angle were also studied. The results showed that degradation and mechanical properties were related to the ratio of castor oil to polyethylene glycol which made these properties controllable. These properties were also affected by the porosity, as storage and loss moduli were decreased and degradation rate was increased in porous samples compared to those of solid ones.
Keywords: Biomaterials, Degradation, Polyurethane, viscoelastic properties.
Scope of the Article: Biomedical Computing