Cargando…

Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy

A novel composite composed of lignocellulose (LC), glutaraldehyde crosslinked chitosan (GC) and multiwalled carbon nanotube (MWCNT) was fabricated by the hot-pressing process. The effect of the additional GC and MWCNT on the mechanical strength, dimensional stability and fire retardancy of lignocell...

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Zhe, Yan, Yutao, Shen, Xiaoping, Qian, Temeng, Wang, Junjie, Sun, Qingfeng, Jin, Chunde
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415154/
https://www.ncbi.nlm.nih.gov/pubmed/30966376
http://dx.doi.org/10.3390/polym10030341
_version_ 1783403125008236544
author Wang, Zhe
Yan, Yutao
Shen, Xiaoping
Qian, Temeng
Wang, Junjie
Sun, Qingfeng
Jin, Chunde
author_facet Wang, Zhe
Yan, Yutao
Shen, Xiaoping
Qian, Temeng
Wang, Junjie
Sun, Qingfeng
Jin, Chunde
author_sort Wang, Zhe
collection PubMed
description A novel composite composed of lignocellulose (LC), glutaraldehyde crosslinked chitosan (GC) and multiwalled carbon nanotube (MWCNT) was fabricated by the hot-pressing process. The effect of the additional GC and MWCNT on the mechanical strength, dimensional stability and fire retardancy of lignocellulose composites was investigated. The results showed that LC/GC/MWCNT composite exhibited the maximum modulus of rupture (MOR) of 35.3 MPa, modulus of elasticity (MOE) of 2789.1 MPa and internal bonding (IB) strength of 1.2 MPa. Meanwhile, the LC/GC/MWCNT composite displayed improved dimensional stability with a thickness swelling (TS) value of 22.4%. Besides, the LC/GC/MWCNT composite exhibited improved fire retardancy with a limiting oxygen index of 29.0%. The peak heat release rate, the total heat release, the total smoke production and the maximum smoke production ratio of LC/GC/MWCNT composite decreased by 15.9%, 10.7%, 45.5% and 20.7% compared with those of LC composite, respectively. Therefore, the LC/GC/MWCNT composite may be a promising candidate for green wood based composites.
format Online
Article
Text
id pubmed-6415154
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64151542019-04-02 Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy Wang, Zhe Yan, Yutao Shen, Xiaoping Qian, Temeng Wang, Junjie Sun, Qingfeng Jin, Chunde Polymers (Basel) Article A novel composite composed of lignocellulose (LC), glutaraldehyde crosslinked chitosan (GC) and multiwalled carbon nanotube (MWCNT) was fabricated by the hot-pressing process. The effect of the additional GC and MWCNT on the mechanical strength, dimensional stability and fire retardancy of lignocellulose composites was investigated. The results showed that LC/GC/MWCNT composite exhibited the maximum modulus of rupture (MOR) of 35.3 MPa, modulus of elasticity (MOE) of 2789.1 MPa and internal bonding (IB) strength of 1.2 MPa. Meanwhile, the LC/GC/MWCNT composite displayed improved dimensional stability with a thickness swelling (TS) value of 22.4%. Besides, the LC/GC/MWCNT composite exhibited improved fire retardancy with a limiting oxygen index of 29.0%. The peak heat release rate, the total heat release, the total smoke production and the maximum smoke production ratio of LC/GC/MWCNT composite decreased by 15.9%, 10.7%, 45.5% and 20.7% compared with those of LC composite, respectively. Therefore, the LC/GC/MWCNT composite may be a promising candidate for green wood based composites. MDPI 2018-03-20 /pmc/articles/PMC6415154/ /pubmed/30966376 http://dx.doi.org/10.3390/polym10030341 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Zhe
Yan, Yutao
Shen, Xiaoping
Qian, Temeng
Wang, Junjie
Sun, Qingfeng
Jin, Chunde
Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy
title Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy
title_full Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy
title_fullStr Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy
title_full_unstemmed Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy
title_short Lignocellulose-Chitosan-Multiwalled Carbon Nanotube Composites with Improved Mechanical Strength, Dimensional Stability and Fire Retardancy
title_sort lignocellulose-chitosan-multiwalled carbon nanotube composites with improved mechanical strength, dimensional stability and fire retardancy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415154/
https://www.ncbi.nlm.nih.gov/pubmed/30966376
http://dx.doi.org/10.3390/polym10030341
work_keys_str_mv AT wangzhe lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy
AT yanyutao lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy
AT shenxiaoping lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy
AT qiantemeng lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy
AT wangjunjie lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy
AT sunqingfeng lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy
AT jinchunde lignocellulosechitosanmultiwalledcarbonnanotubecompositeswithimprovedmechanicalstrengthdimensionalstabilityandfireretardancy