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Mussel-Inspired Self-Adhesive, Antidrying, and Antifreezing Poly(acrylic acid)/Bentonite/Polydopamine Hybrid Glycerol-Hydrogel and the Sensing Application
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-07-07 , DOI: 10.1021/acsapm.0c00264 Lu Wu 1 , Longwei Li 1 , Meijie Qu 1 , Hai Wang 1 , Yuezhen Bin 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-07-07 , DOI: 10.1021/acsapm.0c00264 Lu Wu 1 , Longwei Li 1 , Meijie Qu 1 , Hai Wang 1 , Yuezhen Bin 1
Affiliation
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Hydrogel has great application prospect in the field of flexible wearable devices; however, its poor antifreezing and antidrying properties hinder its applications in wearable devices. Herein, a self-adhesive glycerol-hydrogel (G-hydrogel) with antifreezing and antidrying properties was prepared successfully. The glycerol and water double-solvent system endowed excellent antifreezing and antidrying properties with hydrogel, which ensured the flexibility of the G-hydrogel even after being frozen for 24 h at −15 °C or stored at room temperature for a long time. Polydopamine (PDA)-intercalated bentonite (BT) incorporated into the G-hydrogel contributed good comprehensive mechanical property to the G-hydrogel. The peeling test results confirmed that G-hydrogel has good adhesion to natural and synthetic materials because of the existence of PDA with catechol structure. Particularly, the G-hydrogel presented marvelous sensing capabilities for strain and pressure and could monitor the movements of a human. In summary, this kind of self-adhesive, antidrying, and antifreezing hybrid G-hydrogel may be a very promising soft material for flexible wearable devices.
中文翻译：
贻贝启发的自粘，防干燥和防冻聚丙烯酸/膨润土/聚多巴胺杂化甘油-水凝胶及其传感应用
水凝胶在柔性可穿戴设备领域具有广阔的应用前景。但是，其抗冻和抗干燥性能差，阻碍了其在可穿戴设备中的应用。在此，成功制备了具有防冻和抗干燥性能的自粘甘油水凝胶（G-水凝胶）。甘油和水的双溶剂体系赋予水凝胶优异的防冻和抗干燥性能，即使在-15°C冷冻24 h或在室温下长时间保存后，也能确保G水凝胶的柔韧性。掺入G-水凝胶中的聚多巴胺（PDA）插层膨润土（BT）为G-水凝胶提供了良好的综合机械性能。剥离试验结果证实，由于存在具有邻苯二酚结构的PDA，G-水凝胶对天然和合成材料具有良好的粘附性。特别是，G-水凝胶具有出色的应变和压力感应能力，可以监测人体运动。总之，这种自粘，抗干燥和防冻的混合G水凝胶对于柔性可穿戴设备而言可能是非常有前途的软材料。
更新日期：2020-08-14
中文翻译：
贻贝启发的自粘，防干燥和防冻聚丙烯酸/膨润土/聚多巴胺杂化甘油-水凝胶及其传感应用
水凝胶在柔性可穿戴设备领域具有广阔的应用前景。但是，其抗冻和抗干燥性能差，阻碍了其在可穿戴设备中的应用。在此，成功制备了具有防冻和抗干燥性能的自粘甘油水凝胶（G-水凝胶）。甘油和水的双溶剂体系赋予水凝胶优异的防冻和抗干燥性能，即使在-15°C冷冻24 h或在室温下长时间保存后，也能确保G水凝胶的柔韧性。掺入G-水凝胶中的聚多巴胺（PDA）插层膨润土（BT）为G-水凝胶提供了良好的综合机械性能。剥离试验结果证实，由于存在具有邻苯二酚结构的PDA，G-水凝胶对天然和合成材料具有良好的粘附性。特别是，G-水凝胶具有出色的应变和压力感应能力，可以监测人体运动。总之，这种自粘，抗干燥和防冻的混合G水凝胶对于柔性可穿戴设备而言可能是非常有前途的软材料。
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