含藻酸盐的水凝胶：反应温度对形态和热性能的影响

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

作者信息

Bialik-Wąs Katarzyna, Raftopoulos Konstantinos N, Pielichowski Krzysztof

机构信息

Department of Organic Chemistry and Technology, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska Str., 31155 Cracow, Poland.

Department of Chemistry and Technology of Polymers, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska Str., 31155 Cracow, Poland.

出版信息

Materials (Basel). 2022 Jan 19;15(3):748. doi: 10.3390/ma15030748.

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% (/) 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 promoted the crosslinking reaction.

在本研究中，我们研究了反应温度对藻酸钠/聚乙烯醇基水凝胶的物理化学、结构、形态和热性能的影响，这些水凝胶既有纯形式的，也有添加了20%（/）溶液的。材料通过在65 - 75°C范围内的温度下进行化学交联制备。聚乙二醇二丙烯酸酯用作交联剂。研究了交联反应进行的程度与反应温度的关系，以及最终材料的热性能和形态。凝胶分数的测量结果与差示扫描量热法和傅里叶变换红外光谱法一致，表明较高的反应温度促进了交联反应。基于上述技术，以及通过电子显微镜下的能量色散X射线分析，还表明生物添加剂促进了交联反应。