Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films

A cellulose nanocrystal (CNC) suspension can form liquid crystal films with unique self-assembly behaviors. This gives CNC films a special iridescence, which has potential in many aspects, but the brittleness of pure CNC films limits their application. In this work, we propose a simple physical mixi...

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Autores principales:	Xiao-Yao Wei, Tao Lin, Le Wang, Xue-Feng Yin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cellulose nanocrystal film D-sorbitol optical properties mechanical properties Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/37f74cafb721464d908c8704cd43cb0b
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spelling	oai:doaj.org-article:37f74cafb721464d908c8704cd43cb0b2021-11-25T17:18:17ZEffect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films10.3390/cryst111113242073-4352https://doaj.org/article/37f74cafb721464d908c8704cd43cb0b2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1324https://doaj.org/toc/2073-4352A cellulose nanocrystal (CNC) suspension can form liquid crystal films with unique self-assembly behaviors. This gives CNC films a special iridescence, which has potential in many aspects, but the brittleness of pure CNC films limits their application. In this work, we propose a simple physical mixing method to obtain CNC film by adding D-sorbitol as a plasticizer. We first found that low D-sorbitol content (less than 6 wt% in CNC/DS composite solution) did not make a significant difference compared with pure CNC films in optical performance and, at the same time, the mechanical properties of the CNC films were improved. The various low contents of D-sorbitol can be well dispersed in CNC aqueous suspension, and the wavelength of the selectively reflected phenomenon is relatively stable and slightly decreased at 5 nm for concentrations from 0 to 6%. This phenomenon is opposite to that generally reported, where the wavelength of the selective reflected phenomenon increases obviously with the increase in plastic content. The pitch of the chiral structure decreased from 406 to 362 nm with an increase in D-sorbitol concentration. When the content of D-sorbitol reached 4%, the tensile strength, elongation at break, and Young modulus increased to 39.9 Mpa, 3.00%, and 2.99 GPa, respectively.Xiao-Yao WeiTao LinLe WangXue-Feng YinMDPI AGarticlecellulose nanocrystal filmD-sorbitoloptical propertiesmechanical propertiesCrystallographyQD901-999ENCrystals, Vol 11, Iss 1324, p 1324 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cellulose nanocrystal film D-sorbitol optical properties mechanical properties Crystallography QD901-999
spellingShingle	cellulose nanocrystal film D-sorbitol optical properties mechanical properties Crystallography QD901-999 Xiao-Yao Wei Tao Lin Le Wang Xue-Feng Yin Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films
description	A cellulose nanocrystal (CNC) suspension can form liquid crystal films with unique self-assembly behaviors. This gives CNC films a special iridescence, which has potential in many aspects, but the brittleness of pure CNC films limits their application. In this work, we propose a simple physical mixing method to obtain CNC film by adding D-sorbitol as a plasticizer. We first found that low D-sorbitol content (less than 6 wt% in CNC/DS composite solution) did not make a significant difference compared with pure CNC films in optical performance and, at the same time, the mechanical properties of the CNC films were improved. The various low contents of D-sorbitol can be well dispersed in CNC aqueous suspension, and the wavelength of the selectively reflected phenomenon is relatively stable and slightly decreased at 5 nm for concentrations from 0 to 6%. This phenomenon is opposite to that generally reported, where the wavelength of the selective reflected phenomenon increases obviously with the increase in plastic content. The pitch of the chiral structure decreased from 406 to 362 nm with an increase in D-sorbitol concentration. When the content of D-sorbitol reached 4%, the tensile strength, elongation at break, and Young modulus increased to 39.9 Mpa, 3.00%, and 2.99 GPa, respectively.
format	article
author	Xiao-Yao Wei Tao Lin Le Wang Xue-Feng Yin
author_facet	Xiao-Yao Wei Tao Lin Le Wang Xue-Feng Yin
author_sort	Xiao-Yao Wei
title	Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films
title_short	Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films
title_full	Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films
title_fullStr	Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films
title_full_unstemmed	Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films
title_sort	effect of a limited amount of d-sorbitol on pitch and mechanical properties of cellulose nanocrystal films
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/37f74cafb721464d908c8704cd43cb0b
work_keys_str_mv	AT xiaoyaowei effectofalimitedamountofdsorbitolonpitchandmechanicalpropertiesofcellulosenanocrystalfilms AT taolin effectofalimitedamountofdsorbitolonpitchandmechanicalpropertiesofcellulosenanocrystalfilms AT lewang effectofalimitedamountofdsorbitolonpitchandmechanicalpropertiesofcellulosenanocrystalfilms AT xuefengyin effectofalimitedamountofdsorbitolonpitchandmechanicalpropertiesofcellulosenanocrystalfilms
_version_	1718412523870355456

Effect of A Limited Amount of D-Sorbitol on Pitch and Mechanical Properties of Cellulose Nanocrystal Films

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