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Article

Alginate Hydrogels with Aloe vera: The Effects of Reaction Temperature on Morphology and Thermal Properties

1
Department of Organic Chemistry and Technology, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska Str., 31155 Cracow, Poland
2
Department of Chemistry and Technology of Polymers, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska Str., 31155 Cracow, Poland
*
Author to whom correspondence should be addressed.
Academic Editors: Binyang Du and Georgios Bokias
Materials 2022, 15(3), 748; https://doi.org/10.3390/ma15030748
Received: 20 November 2021 / Revised: 3 January 2022 / Accepted: 13 January 2022 / Published: 19 January 2022
(This article belongs to the Section Polymeric Materials)
In this study, we investigated the impact of reaction temperature on the physicochemical, structural, morphological, and thermal properties of sodium alginate/poly (vinyl alcohol)-based hydrogels, both in the pure form and with the addition of 20% (v/v) Aloe vera solution. The materials were prepared by chemical crosslinking at temperatures in the range of 65–75 °C. Poly (ethylene glycol) diacrylate was used as a crosslinking agent. The extent to which the crosslinking reaction proceeded was studied as a function of the reaction temperature, along with the thermal properties and morphology of the final materials. A measurement of gel fraction, in agreement with differential scanning calorimetry and Fourier transform infrared spectroscopy, showed that a higher temperature of reaction promoted the crosslinking reaction. On the basis of the aforementioned techniques, as well as by energy dispersive X-ray analysis under an electron microscope, it was also shown that the bioadditive Aloe vera promoted the crosslinking reaction. View Full-Text
Keywords: hydrogels; sodium alginate/poly (vinyl alcohol) matrix; Aloe vera; DSC analysis hydrogels; sodium alginate/poly (vinyl alcohol) matrix; Aloe vera; DSC analysis
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MDPI and ACS Style

Bialik-Wąs, K.; Raftopoulos, K.N.; Pielichowski, K. Alginate Hydrogels with Aloe vera: The Effects of Reaction Temperature on Morphology and Thermal Properties. Materials 2022, 15, 748. https://doi.org/10.3390/ma15030748

AMA Style

Bialik-Wąs K, Raftopoulos KN, Pielichowski K. Alginate Hydrogels with Aloe vera: The Effects of Reaction Temperature on Morphology and Thermal Properties. Materials. 2022; 15(3):748. https://doi.org/10.3390/ma15030748

Chicago/Turabian Style

Bialik-Wąs, Katarzyna, Konstantinos N. Raftopoulos, and Krzysztof Pielichowski. 2022. "Alginate Hydrogels with Aloe vera: The Effects of Reaction Temperature on Morphology and Thermal Properties" Materials 15, no. 3: 748. https://doi.org/10.3390/ma15030748

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