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Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene

It is considered to be one of the most effective strategies to prepare functionalized polypropylene (PP) materials via the melt grafting of polar monomers onto PP chains. However, the grafting efficiency of functional monomers is generally low. To achieve a high grafting efficiency, we explored the...

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Autores principales: Zheng, Xin, He, Lina, Yu, Guipeng, Li, Yongjin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9735711/
https://www.ncbi.nlm.nih.gov/pubmed/36501646
http://dx.doi.org/10.3390/polym14235253
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author Zheng, Xin
He, Lina
Yu, Guipeng
Li, Yongjin
author_facet Zheng, Xin
He, Lina
Yu, Guipeng
Li, Yongjin
author_sort Zheng, Xin
collection PubMed
description It is considered to be one of the most effective strategies to prepare functionalized polypropylene (PP) materials via the melt grafting of polar monomers onto PP chains. However, the grafting efficiency of functional monomers is generally low. To achieve a high grafting efficiency, we explored the effect of tea polyphenols (C), which are good free radical scavengers, on the melt grafting of glycidyl methacrylate (GMA) onto PP chains initiated by dicumyl peroxide (DCP). Specifically, 0.5~3 wt% of tea polyphenols (C) were introduced to the PP/DCP/GMA melt blending system. The morphology, melt flow rate (MFR), thermal and mechanical properties of tea polyphenols (C) incorporated PP/DCP/GMA blends were investigated systematically. The results showed that the proper amount of tea polyphenols (C) (0.5~2 wt%) promoted the grafting of GMA. Unexpectedly, the PP backbone suffered from more severe degradation with the addition of tea polyphenols (C). The phenomena were ascribed to the reaction between phenolic hydroxyl groups of tea polyphenols (C) and epoxy groups of grafted GMA, which was revealed by the FTIR results. In addition, according to DSC and the tensile test, the co-grafting of GMA and tea polyphenols (C) improved the crystallization ability, yield strength and Young’s modulus of the PP matrix.
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spelling pubmed-97357112022-12-11 Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene Zheng, Xin He, Lina Yu, Guipeng Li, Yongjin Polymers (Basel) Article It is considered to be one of the most effective strategies to prepare functionalized polypropylene (PP) materials via the melt grafting of polar monomers onto PP chains. However, the grafting efficiency of functional monomers is generally low. To achieve a high grafting efficiency, we explored the effect of tea polyphenols (C), which are good free radical scavengers, on the melt grafting of glycidyl methacrylate (GMA) onto PP chains initiated by dicumyl peroxide (DCP). Specifically, 0.5~3 wt% of tea polyphenols (C) were introduced to the PP/DCP/GMA melt blending system. The morphology, melt flow rate (MFR), thermal and mechanical properties of tea polyphenols (C) incorporated PP/DCP/GMA blends were investigated systematically. The results showed that the proper amount of tea polyphenols (C) (0.5~2 wt%) promoted the grafting of GMA. Unexpectedly, the PP backbone suffered from more severe degradation with the addition of tea polyphenols (C). The phenomena were ascribed to the reaction between phenolic hydroxyl groups of tea polyphenols (C) and epoxy groups of grafted GMA, which was revealed by the FTIR results. In addition, according to DSC and the tensile test, the co-grafting of GMA and tea polyphenols (C) improved the crystallization ability, yield strength and Young’s modulus of the PP matrix. MDPI 2022-12-01 /pmc/articles/PMC9735711/ /pubmed/36501646 http://dx.doi.org/10.3390/polym14235253 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
Zheng, Xin
He, Lina
Yu, Guipeng
Li, Yongjin
Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene
title Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene
title_full Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene
title_fullStr Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene
title_full_unstemmed Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene
title_short Effect of Tea Polyphenols on the Melt Grafting of Glycidyl Methacrylate onto Polypropylene
title_sort effect of tea polyphenols on the melt grafting of glycidyl methacrylate onto polypropylene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9735711/
https://www.ncbi.nlm.nih.gov/pubmed/36501646
http://dx.doi.org/10.3390/polym14235253
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