Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions

The isolation degree of cellulose nanocrystals (CNCs) suspensions calculated from the amount of sediments obtained with the centrifugation method can be estimated with turbidimetry, surface charge and dispersion analysis of the CNCs suspension. Three different types of raw cellulosic materials were...

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Autores principales:	Minwoo Lee, Minhaeng Heo, Hyunho Lee, Jihoon Shin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cellulose nanocrystals high-pressure homogenization turbidity surface charge fractionation Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/7aded6bae09a494fbd89bf55a1b76325
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spelling	oai:doaj.org-article:7aded6bae09a494fbd89bf55a1b763252021-11-11T18:02:28ZFacile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions10.3390/ma142164631996-1944https://doaj.org/article/7aded6bae09a494fbd89bf55a1b763252021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6463https://doaj.org/toc/1996-1944The isolation degree of cellulose nanocrystals (CNCs) suspensions calculated from the amount of sediments obtained with the centrifugation method can be estimated with turbidimetry, surface charge and dispersion analysis of the CNCs suspension. Three different types of raw cellulosic materials were used and carried out with an acid hydrolysis and mechanical disintegration. As the number of high-pressure homogenizer treatments increased, the isolation degree of CNCs from microcrystalline cellulose (MCC) increased from 2.3 to 99.6%, while the absorbencies from turbidimetric measurement of the CNCs suspension decreased, from 2.6 to 0.1 Abs units. Furthermore, the surface charges based on zeta potential measurements of the CNCs suspensions increased from −34.6 to −98.7 mV, but the heights of sediments from the CNCs suspensions were reduced, from 4.01 to 0.07 mm. Similar results were obtained for CNCs from softwood pulp (SWP) and cotton pulp (CP). These results show a direct correlation between yield, turbidity, surface charge and sedimentation of CNCs suspensions. Their correlation indices (0.9) were close to a maximal value of 1. This approach can be suggested as a facile and rapid estimation method for CNCs manufacturing process.Minwoo LeeMinhaeng HeoHyunho LeeJihoon ShinMDPI AGarticlecellulose nanocrystalshigh-pressure homogenizationturbiditysurface chargefractionationTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6463, p 6463 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cellulose nanocrystals high-pressure homogenization turbidity surface charge fractionation Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	cellulose nanocrystals high-pressure homogenization turbidity surface charge fractionation Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Minwoo Lee Minhaeng Heo Hyunho Lee Jihoon Shin Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions
description	The isolation degree of cellulose nanocrystals (CNCs) suspensions calculated from the amount of sediments obtained with the centrifugation method can be estimated with turbidimetry, surface charge and dispersion analysis of the CNCs suspension. Three different types of raw cellulosic materials were used and carried out with an acid hydrolysis and mechanical disintegration. As the number of high-pressure homogenizer treatments increased, the isolation degree of CNCs from microcrystalline cellulose (MCC) increased from 2.3 to 99.6%, while the absorbencies from turbidimetric measurement of the CNCs suspension decreased, from 2.6 to 0.1 Abs units. Furthermore, the surface charges based on zeta potential measurements of the CNCs suspensions increased from −34.6 to −98.7 mV, but the heights of sediments from the CNCs suspensions were reduced, from 4.01 to 0.07 mm. Similar results were obtained for CNCs from softwood pulp (SWP) and cotton pulp (CP). These results show a direct correlation between yield, turbidity, surface charge and sedimentation of CNCs suspensions. Their correlation indices (0.9) were close to a maximal value of 1. This approach can be suggested as a facile and rapid estimation method for CNCs manufacturing process.
format	article
author	Minwoo Lee Minhaeng Heo Hyunho Lee Jihoon Shin
author_facet	Minwoo Lee Minhaeng Heo Hyunho Lee Jihoon Shin
author_sort	Minwoo Lee
title	Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions
title_short	Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions
title_full	Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions
title_fullStr	Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions
title_full_unstemmed	Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions
title_sort	facile and quantitative method for estimating the isolation degree of cellulose nanocrystals (cncs) suspensions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7aded6bae09a494fbd89bf55a1b76325
work_keys_str_mv	AT minwoolee facileandquantitativemethodforestimatingtheisolationdegreeofcellulosenanocrystalscncssuspensions AT minhaengheo facileandquantitativemethodforestimatingtheisolationdegreeofcellulosenanocrystalscncssuspensions AT hyunholee facileandquantitativemethodforestimatingtheisolationdegreeofcellulosenanocrystalscncssuspensions AT jihoonshin facileandquantitativemethodforestimatingtheisolationdegreeofcellulosenanocrystalscncssuspensions
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Facile and Quantitative Method for Estimating the Isolation Degree of Cellulose Nanocrystals (CNCs) Suspensions

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