A terahertz spectroscopic study of chitosan-based bionanocomposites containing clay nanoparticles

Migal, E. A.; Mishchenko, M. D.; Ozheredov, I. A.; Postnova, I. V.; Sapozhnikov, Dmitry; Shkurinov, A. P.; Shchipunov, Yu. A.

doi:10.1134/s1061933x16020095

Cited by 5 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CMC has higher intrinsic losses than cellulose . Chitosan produced from sea shell chitin has been proposed to flocculate and retain fine particles in papermaking: it also features high dielectric losses . Bio‐based plastics such as polylactic acid (PLA) has intrinsic losses similar to paper .…”

Section: Origins Of Dielectric Losses Of Paper In the Thz Domainmentioning

confidence: 99%

“…[41] Chitosan produced from sea shell chitin has been proposed to flocculate and retain fine particles in papermaking [42] : it also features high dielectric losses. [43] Bio-based plastics such as polylactic acid (PLA) has intrinsic losses similar to paper. [44] Olefin based plastics indeed have low losses [44] but may not be compatible with cellulosic fibres, not to mention environmental issues.…”

Section: Figurementioning

confidence: 99%

“…Loss factor and real permittivity of paper and several potential additives at 1 THz (compiled from various sources (Error bars are based on typical values for THz TDS measurements, that is 2.5% for

ϵ_{r}

and 10% for

\tan true(δ true)

).…”

Section: Origins Of Dielectric Losses Of Paper In the Thz Domainmentioning

confidence: 99%

See 2 more Smart Citations

Dielectric Losses of Paper in the THz Domain: Literature Review, Needs for Future Research, and Prospective Solutions

Huber

Martinez

Guers

et al. 2017

Physica Status Solidi (a)

View full text Add to dashboard Cite

High frequency paper‐based electronics is developing fast, with smart yet low cost applications in view. However, the dielectric losses of paper remain a difficult hurdle to overcome. First, the literature on the topic is reviewed and the contributions from moisture, air, mineral filler, and wood constituents to dielectric losses are highlighted. Then, the guidelines for future research are defined, including the need for systematic comparisons in controlled moisture conditions. In an effort to produce low loss materials for paper‐based electronics, it is proposed here to impregnate paper with a low loss substance, after removing residual water.

show abstract

Section: Origins Of Dielectric Losses Of Paper In the Thz Domainmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Dielectric Losses of Paper in the THz Domain: Literature Review, Needs for Future Research, and Prospective Solutions

Huber

Martinez

Guers

et al. 2017

Physica Status Solidi (a)

View full text Add to dashboard Cite

show abstract

Terahertz Detection of Acid Blue 113 Dye Using Hybrid Hydrogels

Garnica-Palafox,

Velázquez-Benítez,

Sánchez-Arévalo

et al. 2024

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

The detection of pollutant dyes in the environment, particularly in waterways, can be extended and potentially simplified using terahertz spectroscopy. The use of hydrogels to absorb these contaminants from water and create solid samples with moderate transparency at terahertz frequencies evidently facilitates spectroscopic analysis. In this study, we demonstrate that chitosan and poly(vinyl alcohol) hydrogels, as well as their cross-linked and nanocomposite hybrid blends, efficiently capture the acid blue 113 azo dye (AB113). We show that terahertz transmittance and refractive index measurements conducted on these hydrogel materials offer an effective alternative method for detecting water contaminants, especially azo dyes. The terahertz transmittance spectra provide evidence of azo dye molecules within the hydrogel membranes. Additionally, considering the alterations in the hydrogels’ refractive index due to the sorption of AB113 dye molecules, we derived an analytical model to accurately estimate the amount of dye sorbed by the polymeric networks. The findings of this study establish a practical and promising approach for both qualitative and quantitative terahertz detection of AB113 dye using hybrid hydrogels. A detailed comparison with optical and infrared spectroscopy is also provided for reference.

show abstract

Modification, hybridization and applications of saponite: An overview

Zhou

et al. 2019

Applied Clay Science

View full text Add to dashboard Cite

Modification of saponite (Sap) by surface engineering and intercalation chemistry introduces guest species into the structure of Sap and enhances the functionalities of the resultant Sap-based hybrids or composites. This review summarizes and evaluates latest scientific advances in the strategies for surface engineering, intercalation and hybridization of Sap, the insights into the relevant mechanisms, and the properties and applications of the resultant Sap-based materials. Studies have indicated that Sap can be inorganically modified by acid activation, inorganic cation exchange, pillaring, and adsorption. The methods of preparing organo-saponite (OSap) hybrids can be categorized as follows: 1) exchanging the inorganic cations in the interlayer space of Sap with organic cations; 2) covalent grafting of organic moieties or groups onto the surface of Sap; 3) intercalating polymer into the interlayer space of Sap by solution intercalation, and melt mixing or in situ polymerization. Organic-inorganic modified Sap can be made through the reactions between organic species and inorganic-modified Sap, or by the combination of inorganic species with organic-modified Sap. Modified Sap exhibits exceptional thermal stability, surface acidity, optical effects and adsorption. As such, the modified Sap can be used for optical materials, adsorbents, catalysts and clay/polymer nanocomposites (CPN). Literature survey suggests that future studies should place emphasis on optimizing and scaling up the modification of Sap, probing the thermodynamics, kinetics and mechanisms of the modification of Sap, endowing Sap with novel functionalities, and accordingly advancing the practical applications of the resultant Sap-based materials.

show abstract

A terahertz spectroscopic study of chitosan-based bionanocomposites containing clay nanoparticles

Cited by 5 publications

References 31 publications

Dielectric Losses of Paper in the THz Domain: Literature Review, Needs for Future Research, and Prospective Solutions

Dielectric Losses of Paper in the THz Domain: Literature Review, Needs for Future Research, and Prospective Solutions

Terahertz Detection of Acid Blue 113 Dye Using Hybrid Hydrogels

Modification, hybridization and applications of saponite: An overview

Contact Info

Product

Resources

About