Investigation of the properties of conductive hydrogel composite containing Zn particles

Abstract

In this work, the conductive hydrogel composites containing Zn particle synthesized and their electrical and thermal properties were investigated. Polyacrylamide/Zn composites were synthesized by free radical polymerization in aqueous solution. The effect of preparation conditions such as the influence of crosslinker amount, initiator amount, Zn amount, and water absorbency on electrical conductivity of hydrogel was investigated. The effect of preparation conditions on thermal properties has been characterized using thermogravimetric analysis (TGA) method. The structures of metal-composites were evaluated by FTIR and scanning electron microscopy (SEM) methods. SEM revealed a more uniform pore size when Zn particles were used when compared with pure polyacrylamide. TGA curves showed that both hydrogels were stable upto 600 C. The Zn/polyacrylamide hydrogels have a good conductivity of 4.30 mS cm À1 .

Electromechanical Properties of Carbon Nanotube Infused Polyacrylamide Hydrogel

“…However, most hydrogels can be modified to increase their electrical conductivity either chemically, by modifying the end groups, or by the addition of conducting nanoparticles. Inorganic fillers such as graphene, polyaniline, polypyrrole, zinc, and copper have been used to increase the electrical conductivity of hydrogels . These fillers have been shown to significantly increase the electrical conductivity of the hydrogel, but they also tend to reduce the hydrogels capability of swelling .…”

Influence of Dopant Ions on the Properties of Conducting Polyacrylamide/Polyaniline Hydrogels

“…Moreover, the characteristic peaks at 3423, 2927, and 1660 cm -1 are assigned to N-H bending, -CH 2 stretching and N-H in plane bending in -CONH 2 of PAM hydrogel, respectively [6] . The band at around 1253 cm -1 can be ascribed as C-N-C stretching vibration in the polaron structure and peak at 1131 cm -1 is due to the vibration mode of the NH + structure, which is attributed due to the protonation of amine group in aniline and expected in the polymerization progress of PANI.…”

“…Hydrogels are three dimensionally cross-linked hydrophilic network systems which can absorb large amount of water [6] . Conducting polymers have the ability to conduct electricity and also show changes in chemical and physical properties in response to an electrical stimulus.…”

Conductive Hydrogels as Smart Materials for Flexible Electronic Devices

“…Metals with low dimensional nanostructures, such as nanowires, nanorods, nanoparticles, are amongst the most promising nanomaterial candidates for flexible and wearable electronics because they have high electrical conductivity, interesting optical, catalytic properties, facile fabrication and modification processes . However, the research on conducting hydrogels by adding metal‐based materials is rarer.…”

“…Metals with low dimensional nanostructures, such as nanowires, nanorods, nanoparticles, are amongstt he most promising nanomaterial candidates for flexible and wearable electronics because they have high electricalc onductivity,i nteresting optical, catalytic properties, facile fabrication and modification processes. [78][79][80][81] However,the research on conducting hydrogels by adding metal-based materials is rarer.R ecently,g old nanorod (GNR) incorporated gelatin-based hydrogelsh ave been successfully synthesized by UV crosslinking the mixtureo fc entrifuged GNRs and gelatinm ethacrylate (GelMA) prepolymer solution ( Figure 4a). [82] The GelMA-GNR hydrogel exhibited electrically and mechanically enhanced material characteristics as compared to pure GelMA hydrogel, which provide suitable matrices for specific applications in cardiac tissue engineering.…”