Preparation of conductive hydrogel based on graphene oxide/Nano-silver and its performance

doi:10.19398/j.att.202112053

Abstract

Abstract: In order to develop smart sensors based on graphene oxide/nano silver (GO/AgNPs), PVA/SA conductive double crosslinked hydrogels were prepared by using polyvinyl alcohol (PVA)/sodium alginate (SA) double crosslinked hydrogel as substrate and GO/AgNPs composite as conductive filler. A strong hydrogel with high mechanical properties can be formed by mixing PVA and SA in a certain proportion and freezing crosslinking. By adjusting the mass concentration of PVA solution and changing the ratio of PVA to SA, a strong hydrogel with a breaking elongation of 250% can be prepared. When the mass fraction of conductive polymer in the hydrogel is 2.0 mg/mL, it exhibits good electrical conductivity, and its resistance increases significantly with the increase of elongation. The sensitivity of the prepared hydrogel sensor is up to 1.0, which can be used to detect the basic movement of human body.

Key words: GO, nano silver, double network hydrogel, conductivity, sensor

摘要： 为了研发基于氧化石墨烯/纳米银(GO/AgNPs)的智能传感器,以聚乙烯醇(PVA)/海藻酸钠(SA)双交联水凝胶为基材,利用GO/AgNPs复合物作为导电填充材料,制备了PVA/SA导电双交联水凝胶。将PVA与SA按一定比例混合,经过冷冻交联,可以形成具有极高力学性能的强力水凝胶。调节PVA溶液的质量浓度,改变PVA与SA的比例,可以制备出断裂伸长率高达250%的强力水凝胶。当水凝胶中导电聚合物的质量分数为2.0 mg/mL时,其表现出良好导电性,随着伸长率的增加,其电阻也显著增大,制备的导电水凝胶传感器的灵敏度最高可达1.0,可用于检测人体基本运动。

关键词: 氧化石墨烯, 纳米银, 双交联水凝胶, 导电性, 传感器

CLC Number:

TP212

ZHU Bizhi, LIN Hong, CHEN Yuyue, ZHANG Desuo. Preparation of conductive hydrogel based on graphene oxide/Nano-silver and its performance[J]. Advanced Textile Technology, 2022, 30(5): 97-103.

祝毕志, 林红, 陈宇岳, 张德锁. 基于氧化石墨烯/纳米银的导电水凝胶制备及其性能[J]. 现代纺织技术, 2022, 30(5): 97-103.

References

[1] 王政杰,葛正浩,赵梦凡,等.可穿戴电子设备及软机器人制造工艺的研究现状[J].微纳电子技术,2017,54(12):864-870.
WANG Zhengjie, GE Zhenghao, ZHAO Mengfan, et al. Research status of manufacturing technology of wearable electronic equipment and soft robots[J]. Micronanoelectronic Technology, 2017, 54(12): 864-870.
[2] 彭军,李津,李伟,等.柔性可穿戴电子应变传感器的研究现状与应用[J].化工新型材料,2020,48(1):57-62.
PENG Jun, LI Lin, LI Wei, et al. Research progress and application of flexible wearable electronic strain sensor[J]. New Chemical Materials, 2020, 48(1): 57-62.
[3] 崔进京,文丹良,徐丽,等.基于激光诱导石墨烯的柔性传感器最新研究进展[J].功能材料与器件学报,2021,27(4):304-314.
CUI Jinjing, WEN Danliang, XU Li, et al. Research progress of flexible sensors based on laser induced graphene[J]. Journal of Functional Materials and Devices, 2021, 27(4): 304-314.
[4] 吴磊,刘利会,陈淑芬.基于碳基透明电极的柔性有机电致发光二极管[J].化学进展,2021,33(5):802-817.
WU Lei, LIU Lihui, CHEN Shufen. Flexible organic light-emitting diodes using carbon-based transparent electrodes[J]. Progress in Chemistry, 2021, 33(5): 802-817.
[5] CELINE M, CAROLINE C, ELEONORE M, et al. Improvements in purification of silver nanowires by decantation and fabrication of flexible transparent electrodes. Application to capacitive touch sensors[J]. Nanotechnology, 2013, 24(21): 215501.
[6] 徐家星,张俊武,马红艳.纳米银线柔性导电薄膜的抗菌性分析及毒性评估[J].功能材料,2021,52(6):6174-6179.
XU Jiaxing, ZHANG Junwu, MA Hongyan. Antibacterial analysis and toxicity evaluation of nano-silver wire flexible conductive film[J]. Functional Materials, 2021, 52(6): 6174-6179.
[7] 姚雪烽,熊佳庆,张德锁,等.改性聚乙烯醇/纳米银柔性应力传感器的制备及性能研究[J].纺织导报,2021(6):67-70.
YAO Xuefeng, XIONG Jiaqing, ZHANG Desuo, et al. Preparation and properties of modified polyvinyl alcohol nano silver flexible stress sensor[J]. China Textile Leader, 2021(6): 67-70.
[8] 沈宏骏,吴杰,陈昕,等.基于导电织物的应变式柔性传感器[J].林业机械与木工设备,2021,49(3):39-43.
SHEN Hongjun, WU Jie, CHEN Xin, et al. Strain flexible sensor based on conductive fabric[J]. Forestry Machinery & Woodworking Equipment, 2021, 49(3): 39-43.
[9] 陈浩.基于聚乙烯醇的抗冻导电水凝胶的制备与性能研究[D].长春:长春工业大学,2020.
CHEN Hao. Preparation and Properties of Anti-freeze and Conductive Hydrogel Based on Polyvinyl Alcohol[D]. Changchun: Changchun University of Technology, 2020.
[10] GEORGIOU K, KOUTSIOUKIS A, GEORGAKILAS V. Transparent conductive film of polyvinyl alcohol: Reduced graphene oxide composite[J]. Journal of Materials Science, 2021, 56(30): 17028-17039.
[11] 张德锁.超支化聚合物纳米材料的制备及对纺织品的改性研究[D].苏州:苏州大学,2013.
ZHANG Desuo. Fabrication of Nanoparticles Polymeric Hybrids Based on Hyperbranched Polymer and Their Applications on Textile Functional Finishing[D]. Suzhou: Soochow University, 2013.
[12] MARCANO D C, KOSYNKIN D V, BERLIN J M, et al. Improved synthesis of graphene oxide[J]. ACS Nano, 2010, 4(8): 4806-4814.
[13] 吴雷.SA/GO-β-CD复合气凝胶的制备及吸附性能研究[D].苏州:苏州大学,2020.
WU Lei. Preparation and Adsorption Properties of SA/GO-β-CD Composite Aerogel[D]. Suzhou: Soochow University, 2020.
[14] KONG Q, WEI J, HU Y, et al. Fabrication of terminal amino hyperbranched polymer modified graphene oxide and its prominent adsorption performance towards Cr(VI)[J]. Journal of Hazardous Material, 2019, 363: 161-169.