Preparation and properties of PEDOT:PSS/poly(acrylamide-co-methacrylic acid) conductive hydrogels

SUN Fuchang; PAN Yuchen; ZHANG Yunfei; LIU Hui; DU Feipeng

doi:10.13801/j.cnki.fhclxb.20210517.003

Volume 39 Issue 3

Mar. 2021

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SUN Fuchang, PAN Yuchen, ZHANG Yunfei, et al. Preparation and properties of PEDOT:PSS/poly(acrylamide-co-methacrylic acid) conductive hydrogels[J]. Acta Materiae Compositae Sinica, 2022, 39(3): 1131-1140. doi: 10.13801/j.cnki.fhclxb.20210517.003

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SUN Fuchang, PAN Yuchen, ZHANG Yunfei, et al. Preparation and properties of PEDOT:PSS/poly(acrylamide-co-methacrylic acid) conductive hydrogels[J]. Acta Materiae Compositae Sinica, 2022, 39(3): 1131-1140. doi: 10.13801/j.cnki.fhclxb.20210517.003

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Preparation and properties of PEDOT:PSS/poly(acrylamide-co-methacrylic acid) conductive hydrogels

doi: 10.13801/j.cnki.fhclxb.20210517.003

School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China

Received Date: 2021-03-23
Accepted Date: 2021-05-10
Rev Recd Date: 2021-04-26

Available Online: 2021-05-17

Publish Date: 2021-03-01

Abstract

Abstract

In this work, in-situ free-radical solution polymerization method was used to fabricate poly(3, 4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/poly(acrylamide-co-methacrylic acid) (P(AAM-MAA)) conductive hydrogels. The composition and morphology were characterized by FTIR, Raman, TGA, and SEM, respectively. The visible-light transmittance, electrical conductivity, tensile properties, and strain sensitivity were also tested. The results show that PEDOT:PSS is well dispersed in the P(AAM-MAA) hydrogel network, and the hydrogel shows good conductivity and transparency (>50%). The introduction of MAA not only improves the electrical conductivity but also enhances the tensile properties and strain sensitivity of the hydrogel. When the amount of MAA increases from 0wt% to 2.52wt%, the conductivity of PEDOT:PSS/P(AAM-MAA) rises from 0.043 S·m⁻¹ to 0.060 S·m⁻¹, and the tensile strength, elongation at break increases from 46 kPa, 76% to 68 kPa, 129%, respectively. PEDOT:PSS/P(AAM-MAA) also has demonstrated excellent linear sensitivity (R²>0.983) (strain: 0%-70%). The resistance variation curve shows that the prepared hydrogels can be used as sensors to monitor various small movements of human body through the resistance signal change.
- PEDOT: PSS,
- poly(acrylamide-co-methacrylic acid),
- conductive hydrogels,
- electrical conductivity,
- tensile properties,
- sensing property
Long Abstrsct
Innovation Points

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References(32)

References

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