Cargando…
Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions
This work studied the effect of cellulose nanocrystal (NCC) content on the biodegradation kinetics of PLA-based multiscale cellulosic biocomposites (PLAMCBs). To facilitate biodegradation, the materials were subjected to thermo-oxidation before composting. Biodegradation was carried out for 180 days...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10384347/ https://www.ncbi.nlm.nih.gov/pubmed/37514482 http://dx.doi.org/10.3390/polym15143093 |
_version_ | 1785081135144894464 |
---|---|
author | Colli-Gongora, Priscila Esther Moo-Tun, Nora Magally Herrera-Franco, Pedro Jesús Valadez-Gonzalez, Alex |
author_facet | Colli-Gongora, Priscila Esther Moo-Tun, Nora Magally Herrera-Franco, Pedro Jesús Valadez-Gonzalez, Alex |
author_sort | Colli-Gongora, Priscila Esther |
collection | PubMed |
description | This work studied the effect of cellulose nanocrystal (NCC) content on the biodegradation kinetics of PLA-based multiscale cellulosic biocomposites (PLAMCBs). To facilitate biodegradation, the materials were subjected to thermo-oxidation before composting. Biodegradation was carried out for 180 days under controlled thermophilic composting conditions according to the ASTM D 5338 standard. A first-order model based on Monod’s kinetics under limiting substrate conditions was used to study the effect of cellulose nanocrystal (NCC) content on the biodegradation kinetics of multiscale composite materials. It was found that thermo-oxidation at 70 °C for 160 h increased the biodegradability of PLA. Also, it was found that the incorporation of cellulosic fibrous reinforcements increased the biodegradability of PLA by promoting hydrolysis during the first stage of composting. Likewise, it was found that partial substitution of micro cellulose (MFC) by cellulose nanocrystals (NCCs) increased the biodegradability of the biocomposite. This increase was more evident as the NCC content increased, which was attributed to the fact that the incorporation of cellulose nanocrystals facilitated the entry of water into the material and therefore promoted the hydrolytic degradation of the most recalcitrant fraction of PLA from the bulk and not only by surface erosion. |
format | Online Article Text |
id | pubmed-10384347 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103843472023-07-30 Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions Colli-Gongora, Priscila Esther Moo-Tun, Nora Magally Herrera-Franco, Pedro Jesús Valadez-Gonzalez, Alex Polymers (Basel) Article This work studied the effect of cellulose nanocrystal (NCC) content on the biodegradation kinetics of PLA-based multiscale cellulosic biocomposites (PLAMCBs). To facilitate biodegradation, the materials were subjected to thermo-oxidation before composting. Biodegradation was carried out for 180 days under controlled thermophilic composting conditions according to the ASTM D 5338 standard. A first-order model based on Monod’s kinetics under limiting substrate conditions was used to study the effect of cellulose nanocrystal (NCC) content on the biodegradation kinetics of multiscale composite materials. It was found that thermo-oxidation at 70 °C for 160 h increased the biodegradability of PLA. Also, it was found that the incorporation of cellulosic fibrous reinforcements increased the biodegradability of PLA by promoting hydrolysis during the first stage of composting. Likewise, it was found that partial substitution of micro cellulose (MFC) by cellulose nanocrystals (NCCs) increased the biodegradability of the biocomposite. This increase was more evident as the NCC content increased, which was attributed to the fact that the incorporation of cellulose nanocrystals facilitated the entry of water into the material and therefore promoted the hydrolytic degradation of the most recalcitrant fraction of PLA from the bulk and not only by surface erosion. MDPI 2023-07-19 /pmc/articles/PMC10384347/ /pubmed/37514482 http://dx.doi.org/10.3390/polym15143093 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Colli-Gongora, Priscila Esther Moo-Tun, Nora Magally Herrera-Franco, Pedro Jesús Valadez-Gonzalez, Alex Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions |
title | Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions |
title_full | Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions |
title_fullStr | Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions |
title_full_unstemmed | Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions |
title_short | Assessing the Effect of Cellulose Nanocrystal Content on the Biodegradation Kinetics of Multiscale Polylactic Acid Composites under Controlled Thermophilic Composting Conditions |
title_sort | assessing the effect of cellulose nanocrystal content on the biodegradation kinetics of multiscale polylactic acid composites under controlled thermophilic composting conditions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10384347/ https://www.ncbi.nlm.nih.gov/pubmed/37514482 http://dx.doi.org/10.3390/polym15143093 |
work_keys_str_mv | AT colligongorapriscilaesther assessingtheeffectofcellulosenanocrystalcontentonthebiodegradationkineticsofmultiscalepolylacticacidcompositesundercontrolledthermophiliccompostingconditions AT mootunnoramagally assessingtheeffectofcellulosenanocrystalcontentonthebiodegradationkineticsofmultiscalepolylacticacidcompositesundercontrolledthermophiliccompostingconditions AT herrerafrancopedrojesus assessingtheeffectofcellulosenanocrystalcontentonthebiodegradationkineticsofmultiscalepolylacticacidcompositesundercontrolledthermophiliccompostingconditions AT valadezgonzalezalex assessingtheeffectofcellulosenanocrystalcontentonthebiodegradationkineticsofmultiscalepolylacticacidcompositesundercontrolledthermophiliccompostingconditions |