Blažic Roko, Kučić Grgić Dajana, Kraljić Roković Marijana, Vidović Elvira
Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
Gels. 2022 Oct 7;8(10):636. doi: 10.3390/gels8100636.
Hydrogels have been investigated due to their unique properties. These include high water content and biocompatibility. Here, hydrogels with different ratios of poly(2-(dimethylamino)ethylmethacrylate) (PDMAEMA) were grafted onto cellulose (Cel--PDMAEMA) by the free radical polymerization method and gamma-ray radiation was applied in order to increase crosslinking and content of PDMAEMA. Gamma irradiation enabled an increase of PDMAEMA content in hydrogels in case of higher ratio of 2-(dimethylamino)ethyl methacrylate in the initial reaction mixture. The swelling of synthesized hydrogels was monitored in dependence of pH (3, 5.5 and 10) during up to 60 days. The swelling increased from 270% to 900%. Testing of antimicrobial activity of selected hydrogel films showed weak inhibitory activity against , , and . The results obtained by the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) indicate that chemically synthesized hydrogels have good characteristics for the supercapacitor application.
由于水凝胶具有独特的性质，因此对其进行了研究。这些特性包括高含水量和生物相容性。在此，通过自由基聚合法将具有不同比例聚（甲基丙烯酸2-（二甲氨基）乙酯）（PDMAEMA）的水凝胶接枝到纤维素上（Cel-PDMAEMA），并应用γ射线辐射以增加PDMAEMA的交联度和含量。在初始反应混合物中甲基丙烯酸2-（二甲氨基）乙酯比例较高的情况下，γ辐射能够提高水凝胶中PDMAEMA的含量。在长达60天的时间内，根据pH值（3、5.5和10）监测合成水凝胶的溶胀情况。溶胀率从270%增加到900%。对所选水凝胶薄膜的抗菌活性测试表明，其对 、 和 具有较弱的抑制活性。通过循环伏安法（CV）和电化学阻抗谱（EIS）获得的结果表明，化学合成的水凝胶具有用于超级电容器应用的良好特性。
