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Cellulose nanofibrils manufactured by various methods with application as paper strength additives
Recycled paper and some hardwood paper often display poorer mechanical properties, which hinder its practical applications and need to be addressed. In this work, cellulose nanofibrils (CNFs) obtained by a combined process of enzymatic hydrolysis and grinding (EG-CNFs), grinding and microfluidizatio...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8184942/ https://www.ncbi.nlm.nih.gov/pubmed/34099799 http://dx.doi.org/10.1038/s41598-021-91420-y |
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author | Zeng, Jinsong Zeng, Zhanting Cheng, Zheng Wang, Yu Wang, Xiaojun Wang, Bin Gao, Wenhua |
author_facet | Zeng, Jinsong Zeng, Zhanting Cheng, Zheng Wang, Yu Wang, Xiaojun Wang, Bin Gao, Wenhua |
author_sort | Zeng, Jinsong |
collection | PubMed |
description | Recycled paper and some hardwood paper often display poorer mechanical properties, which hinder its practical applications and need to be addressed. In this work, cellulose nanofibrils (CNFs) obtained by a combined process of enzymatic hydrolysis and grinding (EG-CNFs), grinding and microfluidization (GH-CNFs) or TEMPO-mediated oxidation and grinding (TE-CNFs) were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Moreover, CNFs were made into films on which some characterizations including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and UV–Vis transmittance spectroscopy were implemented. Results showed that CNF fibrillation was promoted as times of passes increased in microfluidization, and CNFs pretreated by enzyme possessed shorter length. Crystallinity of CNFs was related to CNF manufacturing methods, while CNF films’ transparency was correlated to CNF diameter distributions. Moreover, CNFs were applied with different dosages on recycled and hardwood paper. Lengths of CNFs, strength of CNF network, and pulp properties were critical factors affecting the mechanical strength of CNFs-enhanced paper. GH-CNFs showed better strengthened effect on tensile strength of paper than TE-CNFs and EG-CNFs. The best overall improvement was achieved at GH-CNF10 dosage of 5.0 wt% on hardwood paper. The increment of tensile index, burst index, and folding endurance were 108.32%, 104.65%, and 600%, respectively. This work aims to find out the relationship between production methods and morphologies of CNFs and how the morphological characteristics of CNFs affecting the mechanical performance of paper when they are added as strength additives. |
format | Online Article Text |
id | pubmed-8184942 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-81849422021-06-08 Cellulose nanofibrils manufactured by various methods with application as paper strength additives Zeng, Jinsong Zeng, Zhanting Cheng, Zheng Wang, Yu Wang, Xiaojun Wang, Bin Gao, Wenhua Sci Rep Article Recycled paper and some hardwood paper often display poorer mechanical properties, which hinder its practical applications and need to be addressed. In this work, cellulose nanofibrils (CNFs) obtained by a combined process of enzymatic hydrolysis and grinding (EG-CNFs), grinding and microfluidization (GH-CNFs) or TEMPO-mediated oxidation and grinding (TE-CNFs) were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Moreover, CNFs were made into films on which some characterizations including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and UV–Vis transmittance spectroscopy were implemented. Results showed that CNF fibrillation was promoted as times of passes increased in microfluidization, and CNFs pretreated by enzyme possessed shorter length. Crystallinity of CNFs was related to CNF manufacturing methods, while CNF films’ transparency was correlated to CNF diameter distributions. Moreover, CNFs were applied with different dosages on recycled and hardwood paper. Lengths of CNFs, strength of CNF network, and pulp properties were critical factors affecting the mechanical strength of CNFs-enhanced paper. GH-CNFs showed better strengthened effect on tensile strength of paper than TE-CNFs and EG-CNFs. The best overall improvement was achieved at GH-CNF10 dosage of 5.0 wt% on hardwood paper. The increment of tensile index, burst index, and folding endurance were 108.32%, 104.65%, and 600%, respectively. This work aims to find out the relationship between production methods and morphologies of CNFs and how the morphological characteristics of CNFs affecting the mechanical performance of paper when they are added as strength additives. Nature Publishing Group UK 2021-06-07 /pmc/articles/PMC8184942/ /pubmed/34099799 http://dx.doi.org/10.1038/s41598-021-91420-y Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Zeng, Jinsong Zeng, Zhanting Cheng, Zheng Wang, Yu Wang, Xiaojun Wang, Bin Gao, Wenhua Cellulose nanofibrils manufactured by various methods with application as paper strength additives |
title | Cellulose nanofibrils manufactured by various methods with application as paper strength additives |
title_full | Cellulose nanofibrils manufactured by various methods with application as paper strength additives |
title_fullStr | Cellulose nanofibrils manufactured by various methods with application as paper strength additives |
title_full_unstemmed | Cellulose nanofibrils manufactured by various methods with application as paper strength additives |
title_short | Cellulose nanofibrils manufactured by various methods with application as paper strength additives |
title_sort | cellulose nanofibrils manufactured by various methods with application as paper strength additives |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8184942/ https://www.ncbi.nlm.nih.gov/pubmed/34099799 http://dx.doi.org/10.1038/s41598-021-91420-y |
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