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Preparation and Properties of Different Polyether-Type Defoamers for Concrete
In this study, a series of polyether-type defoamers for concrete which consist of the same alkyl chain (hydrophobic part) but different polyether chains (hydrophilic part) was prepared, and the structure–property relationship of the defoamers was investigated for the first time. Using oleyl alcohol...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9656246/ https://www.ncbi.nlm.nih.gov/pubmed/36363083 http://dx.doi.org/10.3390/ma15217492 |
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author | Qiao, Min Wu, Jingzhi Gao, Nanxiao Shan, Guangcheng Shen, Fei Chen, Jian Zhu, Bosong |
author_facet | Qiao, Min Wu, Jingzhi Gao, Nanxiao Shan, Guangcheng Shen, Fei Chen, Jian Zhu, Bosong |
author_sort | Qiao, Min |
collection | PubMed |
description | In this study, a series of polyether-type defoamers for concrete which consist of the same alkyl chain (hydrophobic part) but different polyether chains (hydrophilic part) was prepared, and the structure–property relationship of the defoamers was investigated for the first time. Using oleyl alcohol (OA) as the starting agent (alkyl chain), the polyether defoamers with different polyether chains were prepared by changing the amount and sequence of ethylene oxide (EO) and propylene oxide (PO) units. The properties of different defoamers were tested in aqueous solutions, and fresh and hardened mortars; the structure–property relationship of the defoamers was thus studied. The results indicated that the defoaming capacity of the polyether defoamers decreased with an increased EO amount, and the defoamers linked with both EO and PO units (PO before EO) had a stronger defoaming capacity than those linked with EO only. This study is beneficial for the development and applications of novel synthetic polyether-type defoamers for concrete. |
format | Online Article Text |
id | pubmed-9656246 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96562462022-11-15 Preparation and Properties of Different Polyether-Type Defoamers for Concrete Qiao, Min Wu, Jingzhi Gao, Nanxiao Shan, Guangcheng Shen, Fei Chen, Jian Zhu, Bosong Materials (Basel) Article In this study, a series of polyether-type defoamers for concrete which consist of the same alkyl chain (hydrophobic part) but different polyether chains (hydrophilic part) was prepared, and the structure–property relationship of the defoamers was investigated for the first time. Using oleyl alcohol (OA) as the starting agent (alkyl chain), the polyether defoamers with different polyether chains were prepared by changing the amount and sequence of ethylene oxide (EO) and propylene oxide (PO) units. The properties of different defoamers were tested in aqueous solutions, and fresh and hardened mortars; the structure–property relationship of the defoamers was thus studied. The results indicated that the defoaming capacity of the polyether defoamers decreased with an increased EO amount, and the defoamers linked with both EO and PO units (PO before EO) had a stronger defoaming capacity than those linked with EO only. This study is beneficial for the development and applications of novel synthetic polyether-type defoamers for concrete. MDPI 2022-10-25 /pmc/articles/PMC9656246/ /pubmed/36363083 http://dx.doi.org/10.3390/ma15217492 Text en © 2022 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 Qiao, Min Wu, Jingzhi Gao, Nanxiao Shan, Guangcheng Shen, Fei Chen, Jian Zhu, Bosong Preparation and Properties of Different Polyether-Type Defoamers for Concrete |
title | Preparation and Properties of Different Polyether-Type Defoamers for Concrete |
title_full | Preparation and Properties of Different Polyether-Type Defoamers for Concrete |
title_fullStr | Preparation and Properties of Different Polyether-Type Defoamers for Concrete |
title_full_unstemmed | Preparation and Properties of Different Polyether-Type Defoamers for Concrete |
title_short | Preparation and Properties of Different Polyether-Type Defoamers for Concrete |
title_sort | preparation and properties of different polyether-type defoamers for concrete |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9656246/ https://www.ncbi.nlm.nih.gov/pubmed/36363083 http://dx.doi.org/10.3390/ma15217492 |
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