Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine

Herein, a one-pot strategy was used to prepare hydrophobic cellulose nanocrystals (CNCs) surface-modified with tannic acid and octadecylamine. By this strategy, CNCs derived from wood (W-CNC) and tunicates (T-CNC) were modified in situ and incorporated into a polylactic acid (PLA) matrix using two m...

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Autores principales:	Matthew J. Dunlop, Ronald Sabo, Rabin Bissessur, Bishnu Acharya
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cellulose nanocrystals nanocomposites tunicates extrusion polymer–matrix composites Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/bcf4ac2862c94a1aa6391cc892c3a275
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spelling	oai:doaj.org-article:bcf4ac2862c94a1aa6391cc892c3a2752021-11-11T18:43:00ZPolylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine10.3390/polym132136612073-4360https://doaj.org/article/bcf4ac2862c94a1aa6391cc892c3a2752021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3661https://doaj.org/toc/2073-4360Herein, a one-pot strategy was used to prepare hydrophobic cellulose nanocrystals (CNCs) surface-modified with tannic acid and octadecylamine. By this strategy, CNCs derived from wood (W-CNC) and tunicates (T-CNC) were modified in situ and incorporated into a polylactic acid (PLA) matrix using two methods, without first drying the CNCs. Films of PLA-CNC nanocomposites were prepared both by solution casting and by wet compounding in a thermo-kinetic mixer, followed by melt extrusion. Various properties of these PLA nanocomposites were evaluated herein, along with an assessment of how these properties vary with the type of CNC reinforcement. Cast films with a hybrid mixture of wood and tunicate CNCs displayed improved mechanical properties compared to either wood or tunicate CNCs, but extruded films did not show this hybrid effect. The water vapor permeability of the extruded nanocomposite films with 1% CNCs was reduced by as much as 60% compared to the PLA films. The composite films also showed enhanced biodegradation compared to neat PLA films. These results demonstrate that wet compounded PLA composites produced with wood or tunicate CNCs modified using a one-pot, water-based route have improved barrier and biodegradation properties, indicating a potential for packaging applications without having to dry the CNCs.Matthew J. DunlopRonald SaboRabin BissessurBishnu AcharyaMDPI AGarticlecellulose nanocrystalsnanocompositestunicatesextrusionpolymer–matrix compositesOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3661, p 3661 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cellulose nanocrystals nanocomposites tunicates extrusion polymer–matrix composites Organic chemistry QD241-441
spellingShingle	cellulose nanocrystals nanocomposites tunicates extrusion polymer–matrix composites Organic chemistry QD241-441 Matthew J. Dunlop Ronald Sabo Rabin Bissessur Bishnu Acharya Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine
description	Herein, a one-pot strategy was used to prepare hydrophobic cellulose nanocrystals (CNCs) surface-modified with tannic acid and octadecylamine. By this strategy, CNCs derived from wood (W-CNC) and tunicates (T-CNC) were modified in situ and incorporated into a polylactic acid (PLA) matrix using two methods, without first drying the CNCs. Films of PLA-CNC nanocomposites were prepared both by solution casting and by wet compounding in a thermo-kinetic mixer, followed by melt extrusion. Various properties of these PLA nanocomposites were evaluated herein, along with an assessment of how these properties vary with the type of CNC reinforcement. Cast films with a hybrid mixture of wood and tunicate CNCs displayed improved mechanical properties compared to either wood or tunicate CNCs, but extruded films did not show this hybrid effect. The water vapor permeability of the extruded nanocomposite films with 1% CNCs was reduced by as much as 60% compared to the PLA films. The composite films also showed enhanced biodegradation compared to neat PLA films. These results demonstrate that wet compounded PLA composites produced with wood or tunicate CNCs modified using a one-pot, water-based route have improved barrier and biodegradation properties, indicating a potential for packaging applications without having to dry the CNCs.
format	article
author	Matthew J. Dunlop Ronald Sabo Rabin Bissessur Bishnu Acharya
author_facet	Matthew J. Dunlop Ronald Sabo Rabin Bissessur Bishnu Acharya
author_sort	Matthew J. Dunlop
title	Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine
title_short	Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine
title_full	Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine
title_fullStr	Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine
title_full_unstemmed	Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine
title_sort	polylactic acid cellulose nanocomposite films comprised of wood and tunicate cncs modified with tannic acid and octadecylamine
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bcf4ac2862c94a1aa6391cc892c3a275
work_keys_str_mv	AT matthewjdunlop polylacticacidcellulosenanocompositefilmscomprisedofwoodandtunicatecncsmodifiedwithtannicacidandoctadecylamine AT ronaldsabo polylacticacidcellulosenanocompositefilmscomprisedofwoodandtunicatecncsmodifiedwithtannicacidandoctadecylamine AT rabinbissessur polylacticacidcellulosenanocompositefilmscomprisedofwoodandtunicatecncsmodifiedwithtannicacidandoctadecylamine AT bishnuacharya polylacticacidcellulosenanocompositefilmscomprisedofwoodandtunicatecncsmodifiedwithtannicacidandoctadecylamine
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Polylactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine

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