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Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols

Developing polyols from biomass sources contributes to a more circular economy by replacing petroleum-based polyols in the vast production of polyurethanes (PUR). One such potential biomass source could be leftover birch bark from which suberinic acids (SA) can be obtained. The purpose of this study...

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Autores principales: Ivdre, Aiga, Abolins, Arnis, Volkovs, Nikita, Vevere, Laima, Paze, Aigars, Makars, Raimonds, Godina, Daniela, Rizikovs, Janis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10383278/
https://www.ncbi.nlm.nih.gov/pubmed/37514513
http://dx.doi.org/10.3390/polym15143124
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author Ivdre, Aiga
Abolins, Arnis
Volkovs, Nikita
Vevere, Laima
Paze, Aigars
Makars, Raimonds
Godina, Daniela
Rizikovs, Janis
author_facet Ivdre, Aiga
Abolins, Arnis
Volkovs, Nikita
Vevere, Laima
Paze, Aigars
Makars, Raimonds
Godina, Daniela
Rizikovs, Janis
author_sort Ivdre, Aiga
collection PubMed
description Developing polyols from biomass sources contributes to a more circular economy by replacing petroleum-based polyols in the vast production of polyurethanes (PUR). One such potential biomass source could be leftover birch bark from which suberinic acids (SA) can be obtained. The purpose of this study was to identify the best synthesis routes for novel SA-based polyols, obtain rigid PUR foams, and evaluate their competitiveness and potential suitability as thermal insulation material. Novel polyols were synthesized from depolymerized SA by esterification with various functionality and molecular weight alcohols in several molar ratios. The moisture content, hydroxyl and acid values, and apparent viscosity were tested. Free-rise rigid PUR foams from the most suitable SA-based polyol and tall oil-based polyol were successfully prepared, reaching ~20 wt.% total renewable material content in the foam. The obtained rigid PUR foams’ morphological, mechanical, and thermal properties were investigated and compared to present foam materials, including commercial foams. The apparent density (~33 kg/m(3)), as well as the closed cell content (~94%), compression strength (0.25 MPa, parallel to the foaming direction), and thermal conductivity (~0.019 W/(m·K)), approved the competitiveness and potential ability of SA-based rigid PUR foam production as thermal insulation material.
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spelling pubmed-103832782023-07-30 Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols Ivdre, Aiga Abolins, Arnis Volkovs, Nikita Vevere, Laima Paze, Aigars Makars, Raimonds Godina, Daniela Rizikovs, Janis Polymers (Basel) Article Developing polyols from biomass sources contributes to a more circular economy by replacing petroleum-based polyols in the vast production of polyurethanes (PUR). One such potential biomass source could be leftover birch bark from which suberinic acids (SA) can be obtained. The purpose of this study was to identify the best synthesis routes for novel SA-based polyols, obtain rigid PUR foams, and evaluate their competitiveness and potential suitability as thermal insulation material. Novel polyols were synthesized from depolymerized SA by esterification with various functionality and molecular weight alcohols in several molar ratios. The moisture content, hydroxyl and acid values, and apparent viscosity were tested. Free-rise rigid PUR foams from the most suitable SA-based polyol and tall oil-based polyol were successfully prepared, reaching ~20 wt.% total renewable material content in the foam. The obtained rigid PUR foams’ morphological, mechanical, and thermal properties were investigated and compared to present foam materials, including commercial foams. The apparent density (~33 kg/m(3)), as well as the closed cell content (~94%), compression strength (0.25 MPa, parallel to the foaming direction), and thermal conductivity (~0.019 W/(m·K)), approved the competitiveness and potential ability of SA-based rigid PUR foam production as thermal insulation material. MDPI 2023-07-22 /pmc/articles/PMC10383278/ /pubmed/37514513 http://dx.doi.org/10.3390/polym15143124 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
Ivdre, Aiga
Abolins, Arnis
Volkovs, Nikita
Vevere, Laima
Paze, Aigars
Makars, Raimonds
Godina, Daniela
Rizikovs, Janis
Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols
title Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols
title_full Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols
title_fullStr Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols
title_full_unstemmed Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols
title_short Rigid Polyurethane Foams as Thermal Insulation Material from Novel Suberinic Acid-Based Polyols
title_sort rigid polyurethane foams as thermal insulation material from novel suberinic acid-based polyols
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10383278/
https://www.ncbi.nlm.nih.gov/pubmed/37514513
http://dx.doi.org/10.3390/polym15143124
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