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Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites

Inorganic–organic hybrids are a group of materials that have recently become the subject of intense scientific research. They exhibit some of the specific properties of both highly durable inorganic materials (e.g., titanium dioxide, zinc) and organic products with divergent physicochemical traits (...

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Autores principales: Grząbka-Zasadzińska, Aleksandra, Klapiszewski, Łukasz, Jesionowski, Teofil, Borysiak, Sławomir
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070590/
https://www.ncbi.nlm.nih.gov/pubmed/32079079
http://dx.doi.org/10.3390/molecules25040864
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author Grząbka-Zasadzińska, Aleksandra
Klapiszewski, Łukasz
Jesionowski, Teofil
Borysiak, Sławomir
author_facet Grząbka-Zasadzińska, Aleksandra
Klapiszewski, Łukasz
Jesionowski, Teofil
Borysiak, Sławomir
author_sort Grząbka-Zasadzińska, Aleksandra
collection PubMed
description Inorganic–organic hybrids are a group of materials that have recently become the subject of intense scientific research. They exhibit some of the specific properties of both highly durable inorganic materials (e.g., titanium dioxide, zinc) and organic products with divergent physicochemical traits (e.g., lignin, chitin). This combination results in improved physicochemical, thermal or mechanical properties. Hybrids with defined characteristics can be used as fillers for polymer composites. In this study, three types of filler with different MgO/lignin ratio were used as fillers for polypropylene (PP). The effectiveness of MgO-lignin binding was confirmed using Fourier transform infrared spectroscopy. The fillers were also tested in terms of thermal stability, dispersive-morphological properties as well as porous structure. Polymer composites containing 3 wt.% of each filler were subjected to wide angle X-ray diffraction tests, differential scanning calorimetry and microscopic studies to define their structure, morphology and thermal properties. Additionally, tensile tests of the composites were performed. It was established that the composition of the filler has a significant influence on the crystallization of polypropylene—either spherulites or transcrystalline layers were formed. The value of Young’s modulus and tensile strength remained unaffected by filler type. However, composites with hybrid fillers exhibited lower elongation at break than unfilled polypropylene.
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spelling pubmed-70705902020-03-19 Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites Grząbka-Zasadzińska, Aleksandra Klapiszewski, Łukasz Jesionowski, Teofil Borysiak, Sławomir Molecules Article Inorganic–organic hybrids are a group of materials that have recently become the subject of intense scientific research. They exhibit some of the specific properties of both highly durable inorganic materials (e.g., titanium dioxide, zinc) and organic products with divergent physicochemical traits (e.g., lignin, chitin). This combination results in improved physicochemical, thermal or mechanical properties. Hybrids with defined characteristics can be used as fillers for polymer composites. In this study, three types of filler with different MgO/lignin ratio were used as fillers for polypropylene (PP). The effectiveness of MgO-lignin binding was confirmed using Fourier transform infrared spectroscopy. The fillers were also tested in terms of thermal stability, dispersive-morphological properties as well as porous structure. Polymer composites containing 3 wt.% of each filler were subjected to wide angle X-ray diffraction tests, differential scanning calorimetry and microscopic studies to define their structure, morphology and thermal properties. Additionally, tensile tests of the composites were performed. It was established that the composition of the filler has a significant influence on the crystallization of polypropylene—either spherulites or transcrystalline layers were formed. The value of Young’s modulus and tensile strength remained unaffected by filler type. However, composites with hybrid fillers exhibited lower elongation at break than unfilled polypropylene. MDPI 2020-02-16 /pmc/articles/PMC7070590/ /pubmed/32079079 http://dx.doi.org/10.3390/molecules25040864 Text en © 2020 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
Grząbka-Zasadzińska, Aleksandra
Klapiszewski, Łukasz
Jesionowski, Teofil
Borysiak, Sławomir
Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites
title Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites
title_full Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites
title_fullStr Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites
title_full_unstemmed Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites
title_short Functional MgO–Lignin Hybrids and Their Application as Fillers for Polypropylene Composites
title_sort functional mgo–lignin hybrids and their application as fillers for polypropylene composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070590/
https://www.ncbi.nlm.nih.gov/pubmed/32079079
http://dx.doi.org/10.3390/molecules25040864
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