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Tough and flexible conductive triple network hydrogels based on agarose/polyacrylamide/polyvinyl alcohol and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate
Polymer International ( IF 3.2 ) Pub Date : 2021-04-10 , DOI: 10.1002/pi.6232
Mina Ghafouri Azar 1 , Jagan Mohan Dodda 1 , Petr Bělský 1 , Miroslav Šlouf 2 , Veronika Vavruňková 1 , Jaroslav Kadlec 1 , Tomáš Remiš 1
Affiliation  

Herein, we demonstrate a simple and cost-effective way to fabricate conductive triple network hydrogels based on agarose (Ag), polyacrylamide (PAM) and poly(vinyl alcohol) (PVA) with a combination of physical–chemical crosslinked networks. The conductivity was generated by doping poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) into the triple network matrix of Ag-PAM-PVA. All hydrogels were homogeneous in the swollen state and incorporation of PEDOT:PSS did not influence the morphology significantly on a microscale, (light microscopy and cryogenic low-vacuum SEM). On the nanoscale, small-angle X-ray scattering showed some differences between hydrogels with/without PEDOT:PSS and also between double/triple networks. The tensile and compressive properties were enhanced at a lower concentration of PEDOT:PSS, with a maximum tensile strength of 0.47 MPa, at an elongation of 119%. Fortunately, all hydrogels have shown conductivity in the range of 0.3−1.5 mS cm−1 which is comparable with the conductivity of skin tissues and hence they can be conveniently optimized for use in biosensors or other devices related to skin/internal tissues. © 2021 Society of Industrial Chemistry.

中文翻译:

基于琼脂糖/聚丙烯酰胺/聚乙烯醇和聚(3,4-亚乙基二氧噻吩):聚苯乙烯磺酸盐的坚韧而灵活的导电三网络水凝胶

在此,我们展示了一种简单且经济高效的方法来制造基于琼脂糖 (Ag)、聚丙烯酰胺 (PAM) 和聚乙烯醇 (PVA) 并结合物理-化学交联网络的导电三网络水凝胶。通过将聚(3,4-亚乙基二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)掺杂到 Ag-PAM-PVA 的三重网络矩阵中来产生电导率。所有水凝胶在膨胀状态下都是均匀的,并且 PEDOT:PSS 的掺入在微观尺度上不会显着影响形态(光学显微镜和低温低真空 SEM)。在纳米尺度上,小角度 X 射线散射显示出有/没有 PEDOT:PSS 的水凝胶之间以及双/三网络之间的一些差异。在较低浓度的 PEDOT:PSS 下,拉伸和压缩性能增强,最大拉伸强度为 0.47 MPa,伸长率为 119%。幸运的是,所有水凝胶的电导率都在 0.3-1.5 mS cm 范围内-1与皮肤组织的电导率相当,因此它们可以方便地优化用于生物传感器或其他与皮肤/内部组织相关的设备。© 2021 工业化学学会。
更新日期:2021-04-10
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