Thermoresponsive hydrogels based on renewable resources |
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| Authors: | Elif Isikci Koca Gülnihal Bozdag Gökhan Cayli Dilek Kazan Pinar Cakir Hatir |
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| Affiliation: | 1. Istanbul Arel University, Faculty of Engineering and Architecture, Biomedical Engineering Department, 34537 Istanbul, Turkey;2. Marmara University, Faculty of Engineering, Bioengineering Department, 34722 Istanbul, Turkey;3. Istanbul University-Cerrahpasa University, Faculty of Engineering, Department of Engineering Sciences, 34320 Istanbul, Turkey |
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| Abstract: | This work aims to synthesize novel thermoresponsive hydrogels from renewable resources, bacterial cellulose (BC), and castor oil (CO), and to investigate the effect of CO on physical and thermal behaviors of BC/Poly(N-isopropylacrylamide) (PNIPAM) hydrogels. The structural properties of the hydrogels are analyzed by Fourier-transform infrared (FTIR) spectroscopy. Differential scanning calorimeter (DSC) technique and thermogravimetric analysis (TGA) are also performed to examine the thermal properties of the hydrogels. The morphological differences of the hydrogels are analyzed by scanning electron microscope (SEM). The thermoresponsive performances of the hydrogels are examined by swelling and deswelling behaviors. The hydrogel with CO is found to be more sensitive to temperature changes than the one without CO. Deswelling study demonstrates 91 and 25% of water loss for hydrogels with and without CO, respectively. The present study shows a novel approach to synthesize thermoresponsive hydrogels with renewable resources for biomedical applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48861. |
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| Keywords: | biomedical applications biomaterials biopolymers and renewable polymers |
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