Molecular dynamics of carboxymethyl κ/ι-hybrid carrageenan films doped with NH4I

Fernando G. Torres; Junior Arroyo; Ricardo Alvarez; Sol Rodriguez; Omar Troncoso; Daniel López

doi:10.1080/03602559.2018.1542713

Molecular dynamics of carboxymethyl κ/ι-hybrid carrageenan films doped with NH₄I

Fernando G. Torres, Junior Arroyo, Ricardo Alvarez, Sol Rodriguez, Omar Troncoso, Daniel López

Pontificia Universidad Católica del Perú

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The effect of carboxymethylation and NH₄I incorporation on the molecular dynamics of carrageenan films was studied. Broadband Dielectric Spectroscopy (BDS) assessed the presence of α and β relaxation processes. The effect of NH₄I content was analyzed using the Havriliak-Negami model and parameterizing the temperature dependence of the relaxation times according to the Vogel-Fulcher-Tammann-Hesse (VFTH) equation. The glass transition temperature was found to decrease with the increase of NH₄I content. These results suggest that carboxymethylation and the salt doping treatment increase the molecular mobility of NH4+ ions, making the films suitable for the development of solid electrolytes for energy storage applications.

Original language	English
Pages (from-to)	889-902
Number of pages	14
Journal	Polymer-Plastics Technology and Materials
Volume	58
Issue number	8
DOIs	https://doi.org/10.1080/03602559.2018.1542713
State	Published - 24 May 2019
Externally published	Yes

Keywords

ammonium iodide doping
carboxymethylation
Carrageenan
solid electrolytes

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10.1080/03602559.2018.1542713

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title = "Molecular dynamics of carboxymethyl κ/ι-hybrid carrageenan films doped with NH4I",

abstract = "The effect of carboxymethylation and NH4I incorporation on the molecular dynamics of carrageenan films was studied. Broadband Dielectric Spectroscopy (BDS) assessed the presence of α and β relaxation processes. The effect of NH4I content was analyzed using the Havriliak-Negami model and parameterizing the temperature dependence of the relaxation times according to the Vogel-Fulcher-Tammann-Hesse (VFTH) equation. The glass transition temperature was found to decrease with the increase of NH4I content. These results suggest that carboxymethylation and the salt doping treatment increase the molecular mobility of NH4+ ions, making the films suitable for the development of solid electrolytes for energy storage applications.",

keywords = "ammonium iodide doping, carboxymethylation, Carrageenan, solid electrolytes",

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T1 - Molecular dynamics of carboxymethyl κ/ι-hybrid carrageenan films doped with NH4I

AU - Torres, Fernando G.

AU - Arroyo, Junior

AU - Alvarez, Ricardo

AU - Rodriguez, Sol

AU - Troncoso, Omar

AU - López, Daniel

PY - 2019/5/24

Y1 - 2019/5/24

N2 - The effect of carboxymethylation and NH4I incorporation on the molecular dynamics of carrageenan films was studied. Broadband Dielectric Spectroscopy (BDS) assessed the presence of α and β relaxation processes. The effect of NH4I content was analyzed using the Havriliak-Negami model and parameterizing the temperature dependence of the relaxation times according to the Vogel-Fulcher-Tammann-Hesse (VFTH) equation. The glass transition temperature was found to decrease with the increase of NH4I content. These results suggest that carboxymethylation and the salt doping treatment increase the molecular mobility of NH4+ ions, making the films suitable for the development of solid electrolytes for energy storage applications.

AB - The effect of carboxymethylation and NH4I incorporation on the molecular dynamics of carrageenan films was studied. Broadband Dielectric Spectroscopy (BDS) assessed the presence of α and β relaxation processes. The effect of NH4I content was analyzed using the Havriliak-Negami model and parameterizing the temperature dependence of the relaxation times according to the Vogel-Fulcher-Tammann-Hesse (VFTH) equation. The glass transition temperature was found to decrease with the increase of NH4I content. These results suggest that carboxymethylation and the salt doping treatment increase the molecular mobility of NH4+ ions, making the films suitable for the development of solid electrolytes for energy storage applications.

KW - ammonium iodide doping

KW - carboxymethylation

KW - Carrageenan

KW - solid electrolytes

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SN - 2574-0881

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JO - Polymer-Plastics Technology and Materials

JF - Polymer-Plastics Technology and Materials

IS - 8

ER -

Molecular dynamics of carboxymethyl κ/ι-hybrid carrageenan films doped with NH₄I

Abstract

Keywords

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