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- W3048657506 endingPage "123623" @default.
- W3048657506 startingPage "123623" @default.
- W3048657506 abstract "Chitosan film (CS) and thermally reduced graphene oxide (rGO) are materials used for sensorial devices. However, the high level of swelling, characteristic of CS, coupled with unstable electrochemical measurements, reduces its application. Thus, the swelling effects of CS_rGO films obtained by CS and rGO acetic hydrogel subjected to surface neutralization with ethanol and base were investigated. Their morphological, chemical and electrochemical properties were compared. The untreated CS-rGO showed higher impedance due to the high degree of swelling that led to physical-chemical changes that compromised its efficiency. The neutralization treatments contributed to the reduction of the level of swelling and the formation of more capacitive films, preserving the electrostatic interaction between the functional groups of CS and rGO and maximizing the mobility of charges. Thus, the reduction in swelling, mainly facilitated after treatment with ethanol, presented the lowest impedance and swelling levels among all methods, being suitable for electrode compositions. - Influence of rGO on swelling degree decreasing. - Evaluation of swelling level influence of CS_rGO films before and after neutralization and its relation with impedance values. - Electrochemical properties of ethanol treated and not treated films and its relation due to the swelling level. - Analysis of chemical and morphological surface changes after all treatments (basic and ethanolic)." @default.
- W3048657506 created "2020-08-18" @default.
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- W3048657506 date "2020-11-01" @default.
- W3048657506 modified "2023-09-24" @default.
- W3048657506 title "Influence of swelling level on charge transmission of chitosan and reduced graphene oxide film electrodes" @default.
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- W3048657506 doi "https://doi.org/10.1016/j.matchemphys.2020.123623" @default.
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