Cargando…

Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent

A significant increase in the production of plastic materials and the expansion of their areas of application contributed to the accumulation of a large amount of waste of polymeric materials. Most of the polymer composition is made up of plasticizers. Phthalate plasticizers have been recognized as...

Descripción completa

Detalles Bibliográficos
Autores principales: Vikhareva, Irina Nikolaevna, Aminova, Guliya Karamovna, Mazitova, Aliya Karamovna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399886/
https://www.ncbi.nlm.nih.gov/pubmed/34443422
http://dx.doi.org/10.3390/molecules26164833
_version_ 1783745182977490944
author Vikhareva, Irina Nikolaevna
Aminova, Guliya Karamovna
Mazitova, Aliya Karamovna
author_facet Vikhareva, Irina Nikolaevna
Aminova, Guliya Karamovna
Mazitova, Aliya Karamovna
author_sort Vikhareva, Irina Nikolaevna
collection PubMed
description A significant increase in the production of plastic materials and the expansion of their areas of application contributed to the accumulation of a large amount of waste of polymeric materials. Most of the polymer composition is made up of plasticizers. Phthalate plasticizers have been recognized as potentially hazardous to humans and the environment due to the long period of their biodegradation and the formation of persistent toxic metabolites. It is known that the industrial plasticizer dioctyl adipate is characterized by reduced toxicity and a short biodegradation period. The paper describes the synthesis of a number of new asymmetric esters based on adipic acid and ethoxylated butanol by azeotropic esterification. The receipt of the products was confirmed by IR spectra. The physicochemical properties of the synthesized compounds were investigated. The glass transition temperatures of PVC composites plasticized with alkyl butoxyethyl adipates were determined using DSC analysis. The ecological safety of esters was assessed by the phytotesting method. Samples of adipates were tested for fungal resistance, and the process of their biodegradation in soil was also studied. It is shown that the synthesized esters have good plasticizing properties and are environmentally safe. When utilized under natural conditions, they can serve as a potential source of carbon for soil microorganisms and do not form stable toxic metabolites; therefore, they are not able to accumulate in nature; when the plasticizers under study are disposed of in the soil, toxic substances do not enter.
format Online
Article
Text
id pubmed-8399886
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-83998862021-08-29 Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent Vikhareva, Irina Nikolaevna Aminova, Guliya Karamovna Mazitova, Aliya Karamovna Molecules Article A significant increase in the production of plastic materials and the expansion of their areas of application contributed to the accumulation of a large amount of waste of polymeric materials. Most of the polymer composition is made up of plasticizers. Phthalate plasticizers have been recognized as potentially hazardous to humans and the environment due to the long period of their biodegradation and the formation of persistent toxic metabolites. It is known that the industrial plasticizer dioctyl adipate is characterized by reduced toxicity and a short biodegradation period. The paper describes the synthesis of a number of new asymmetric esters based on adipic acid and ethoxylated butanol by azeotropic esterification. The receipt of the products was confirmed by IR spectra. The physicochemical properties of the synthesized compounds were investigated. The glass transition temperatures of PVC composites plasticized with alkyl butoxyethyl adipates were determined using DSC analysis. The ecological safety of esters was assessed by the phytotesting method. Samples of adipates were tested for fungal resistance, and the process of their biodegradation in soil was also studied. It is shown that the synthesized esters have good plasticizing properties and are environmentally safe. When utilized under natural conditions, they can serve as a potential source of carbon for soil microorganisms and do not form stable toxic metabolites; therefore, they are not able to accumulate in nature; when the plasticizers under study are disposed of in the soil, toxic substances do not enter. MDPI 2021-08-10 /pmc/articles/PMC8399886/ /pubmed/34443422 http://dx.doi.org/10.3390/molecules26164833 Text en © 2021 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
Vikhareva, Irina Nikolaevna
Aminova, Guliya Karamovna
Mazitova, Aliya Karamovna
Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent
title Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent
title_full Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent
title_fullStr Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent
title_full_unstemmed Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent
title_short Ecotoxicity of the Adipate Plasticizers: Influence of the Structure of the Alcohol Substituent
title_sort ecotoxicity of the adipate plasticizers: influence of the structure of the alcohol substituent
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399886/
https://www.ncbi.nlm.nih.gov/pubmed/34443422
http://dx.doi.org/10.3390/molecules26164833
work_keys_str_mv AT vikharevairinanikolaevna ecotoxicityoftheadipateplasticizersinfluenceofthestructureofthealcoholsubstituent
AT aminovaguliyakaramovna ecotoxicityoftheadipateplasticizersinfluenceofthestructureofthealcoholsubstituent
AT mazitovaaliyakaramovna ecotoxicityoftheadipateplasticizersinfluenceofthestructureofthealcoholsubstituent