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Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials
One of the major obstacles to the reuse of recycled plastic materials is the emanation of after-process odors from recycled polymers and composites. Typically, recycled polymers are blended with an off-odor adsorbent additive in the recycling chain to eliminate these smells. This article describes a...
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/PMC9268616/ https://www.ncbi.nlm.nih.gov/pubmed/35808072 http://dx.doi.org/10.3390/nano12132237 |
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author | Cohen, Sarah Chejanovsky, Itamar Suckeveriene, Ran Yosef |
author_facet | Cohen, Sarah Chejanovsky, Itamar Suckeveriene, Ran Yosef |
author_sort | Cohen, Sarah |
collection | PubMed |
description | One of the major obstacles to the reuse of recycled plastic materials is the emanation of after-process odors from recycled polymers and composites. Typically, recycled polymers are blended with an off-odor adsorbent additive in the recycling chain to eliminate these smells. This article describes an innovative ultrasonically assisted method of grafting poly(ethylene imine) (PEI) to silica nanoparticles (SiO(2)) initiated by benzoyl peroxide (BP) which acts as an odor remover. To prepare the PEI/Si, the branched PEI was grafted onto the silica surface without a coupling agent. This made the grafting process straightforward, easy and low in cost. Fourier Transform Infrared (FTIR) analysis confirmed the successful grafting of PEI to silica. The thermogravimetric analysis (TGA) indicated the formation of two different fractions: a polymeric fraction covalently attached to the nanoparticle surface and a non-grafted PEI fraction that was removed during extraction. Up to 30% of the grafted-PEI fractions were produced at the lowest BP concentration with the highest PEI molecular weight at silica-to-PEI weight ratios of (1:1) to (3:1). The sensory assessment showed a substantial reduction in overall odor intensity for 30% of the recycled plastic-containing materials and a ~75% reduction in volatile organic compounds (VOCs) for 100% of the recycled plastics. These results strongly suggest that this innovative PEI/Si nanocomposite can be successfully commercialized for odor removal. To the authors’ best knowledge, this is the first reported work describing a one-pot reaction for grafting PEI to different nanoparticle surfaces. |
format | Online Article Text |
id | pubmed-9268616 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92686162022-07-09 Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials Cohen, Sarah Chejanovsky, Itamar Suckeveriene, Ran Yosef Nanomaterials (Basel) Article One of the major obstacles to the reuse of recycled plastic materials is the emanation of after-process odors from recycled polymers and composites. Typically, recycled polymers are blended with an off-odor adsorbent additive in the recycling chain to eliminate these smells. This article describes an innovative ultrasonically assisted method of grafting poly(ethylene imine) (PEI) to silica nanoparticles (SiO(2)) initiated by benzoyl peroxide (BP) which acts as an odor remover. To prepare the PEI/Si, the branched PEI was grafted onto the silica surface without a coupling agent. This made the grafting process straightforward, easy and low in cost. Fourier Transform Infrared (FTIR) analysis confirmed the successful grafting of PEI to silica. The thermogravimetric analysis (TGA) indicated the formation of two different fractions: a polymeric fraction covalently attached to the nanoparticle surface and a non-grafted PEI fraction that was removed during extraction. Up to 30% of the grafted-PEI fractions were produced at the lowest BP concentration with the highest PEI molecular weight at silica-to-PEI weight ratios of (1:1) to (3:1). The sensory assessment showed a substantial reduction in overall odor intensity for 30% of the recycled plastic-containing materials and a ~75% reduction in volatile organic compounds (VOCs) for 100% of the recycled plastics. These results strongly suggest that this innovative PEI/Si nanocomposite can be successfully commercialized for odor removal. To the authors’ best knowledge, this is the first reported work describing a one-pot reaction for grafting PEI to different nanoparticle surfaces. MDPI 2022-06-29 /pmc/articles/PMC9268616/ /pubmed/35808072 http://dx.doi.org/10.3390/nano12132237 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 Cohen, Sarah Chejanovsky, Itamar Suckeveriene, Ran Yosef Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials |
title | Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials |
title_full | Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials |
title_fullStr | Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials |
title_full_unstemmed | Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials |
title_short | Grafting of Poly(ethylene imine) to Silica Nanoparticles for Odor Removal from Recycled Materials |
title_sort | grafting of poly(ethylene imine) to silica nanoparticles for odor removal from recycled materials |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9268616/ https://www.ncbi.nlm.nih.gov/pubmed/35808072 http://dx.doi.org/10.3390/nano12132237 |
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