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Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose

Due to its excellent mechanical properties and reinforcement abilities, cellulose has become a promising candidate for developing nanocomposites. However, cellulose agglomeration is an issue that must be solved. In this study, we treated microfibrillated cellulose (MFC) with a mixture of the non-ion...

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Autores principales: Wang, Guangzhao, Yang, Xiaohui, Wang, Weihong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473418/
https://www.ncbi.nlm.nih.gov/pubmed/30960425
http://dx.doi.org/10.3390/polym11030441
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author Wang, Guangzhao
Yang, Xiaohui
Wang, Weihong
author_facet Wang, Guangzhao
Yang, Xiaohui
Wang, Weihong
author_sort Wang, Guangzhao
collection PubMed
description Due to its excellent mechanical properties and reinforcement abilities, cellulose has become a promising candidate for developing nanocomposites. However, cellulose agglomeration is an issue that must be solved. In this study, we treated microfibrillated cellulose (MFC) with a mixture of the non-ionic surfactants Span80 and Tween80 (ratio of 1:1) in order to prevent the intermolecular hydrogen bond aggregation of MFC during the process of MFC drying. We used a conical twin-screw extruder to melt compounds for the surfactant-treated MFC and powdered LLDPE. Furthermore, the extruded mixture was hot-pressed into a film, and we also tested the properties of the composite film. We can conclude that there was no agglomeration in the composite film according to microscopic observations and light transmittance test results. Furthermore, the dispersion of the surfactant-treated MFC (STMFC) was uniform until the STMFC filler increased to 10 wt%. The mechanical test results show that when the content of STMFC filler was 10 wt%, the mechanical properties of the composite were optimal. Compared to LLDPE, the STMFC/LLDPE composite film had an increase of 41.03% in tensile strength and an increase of 106.35% in Young’s modulus. Under this system, the DSC results show that the melting point of LLDPE increased from 125 to 131 °C. X-ray diffraction (XRD) results showed that the addition of STMFC did not change the crystallinity of the STMFC/LDPE composites, although the crystallite size increased.
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spelling pubmed-64734182019-05-03 Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose Wang, Guangzhao Yang, Xiaohui Wang, Weihong Polymers (Basel) Article Due to its excellent mechanical properties and reinforcement abilities, cellulose has become a promising candidate for developing nanocomposites. However, cellulose agglomeration is an issue that must be solved. In this study, we treated microfibrillated cellulose (MFC) with a mixture of the non-ionic surfactants Span80 and Tween80 (ratio of 1:1) in order to prevent the intermolecular hydrogen bond aggregation of MFC during the process of MFC drying. We used a conical twin-screw extruder to melt compounds for the surfactant-treated MFC and powdered LLDPE. Furthermore, the extruded mixture was hot-pressed into a film, and we also tested the properties of the composite film. We can conclude that there was no agglomeration in the composite film according to microscopic observations and light transmittance test results. Furthermore, the dispersion of the surfactant-treated MFC (STMFC) was uniform until the STMFC filler increased to 10 wt%. The mechanical test results show that when the content of STMFC filler was 10 wt%, the mechanical properties of the composite were optimal. Compared to LLDPE, the STMFC/LLDPE composite film had an increase of 41.03% in tensile strength and an increase of 106.35% in Young’s modulus. Under this system, the DSC results show that the melting point of LLDPE increased from 125 to 131 °C. X-ray diffraction (XRD) results showed that the addition of STMFC did not change the crystallinity of the STMFC/LDPE composites, although the crystallite size increased. MDPI 2019-03-06 /pmc/articles/PMC6473418/ /pubmed/30960425 http://dx.doi.org/10.3390/polym11030441 Text en © 2019 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, Guangzhao
Yang, Xiaohui
Wang, Weihong
Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose
title Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose
title_full Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose
title_fullStr Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose
title_full_unstemmed Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose
title_short Reinforcing Linear Low-Density Polyethylene with Surfactant-Treated Microfibrillated Cellulose
title_sort reinforcing linear low-density polyethylene with surfactant-treated microfibrillated cellulose
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473418/
https://www.ncbi.nlm.nih.gov/pubmed/30960425
http://dx.doi.org/10.3390/polym11030441
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