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Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement

Grafting terminally functionalized polypropylene (PP) to nanofillers provides well-defined PP-based nanocomposites plausibly featured with a physical cross-linkage structure. In this paper, a series of PP-grafted silica nanoparticles (PP-g-SiO(2)) were synthesized by varying the number of grafted ch...

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Detalles Bibliográficos
Autores principales: Toyonaga, Masahito, Chammingkwan, Patchanee, Terano, Minoru, Taniike, Toshiaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432204/
https://www.ncbi.nlm.nih.gov/pubmed/30974576
http://dx.doi.org/10.3390/polym8080300
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author Toyonaga, Masahito
Chammingkwan, Patchanee
Terano, Minoru
Taniike, Toshiaki
author_facet Toyonaga, Masahito
Chammingkwan, Patchanee
Terano, Minoru
Taniike, Toshiaki
author_sort Toyonaga, Masahito
collection PubMed
description Grafting terminally functionalized polypropylene (PP) to nanofillers provides well-defined PP-based nanocomposites plausibly featured with a physical cross-linkage structure. In this paper, a series of PP-grafted silica nanoparticles (PP-g-SiO(2)) were synthesized by varying the number of grafted chains per silica particle, and influences of the number and the molecular weight of grafted chains were studied on physical properties of PP/PP-g-SiO(2) nanocomposites. We found that only 20–30 chain/particle was sufficient to exploit benefits of the PP grafting for the nanoparticle dispersion, the nucleation, and the Young’s modulus. Meanwhile, the yield strength was sensitive to both of the number and the molecular weight of grafted PP: Grafting longer chains at a higher density led to greater reinforcement.
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spelling pubmed-64322042019-04-02 Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement Toyonaga, Masahito Chammingkwan, Patchanee Terano, Minoru Taniike, Toshiaki Polymers (Basel) Article Grafting terminally functionalized polypropylene (PP) to nanofillers provides well-defined PP-based nanocomposites plausibly featured with a physical cross-linkage structure. In this paper, a series of PP-grafted silica nanoparticles (PP-g-SiO(2)) were synthesized by varying the number of grafted chains per silica particle, and influences of the number and the molecular weight of grafted chains were studied on physical properties of PP/PP-g-SiO(2) nanocomposites. We found that only 20–30 chain/particle was sufficient to exploit benefits of the PP grafting for the nanoparticle dispersion, the nucleation, and the Young’s modulus. Meanwhile, the yield strength was sensitive to both of the number and the molecular weight of grafted PP: Grafting longer chains at a higher density led to greater reinforcement. MDPI 2016-08-12 /pmc/articles/PMC6432204/ /pubmed/30974576 http://dx.doi.org/10.3390/polym8080300 Text en © 2016 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Toyonaga, Masahito
Chammingkwan, Patchanee
Terano, Minoru
Taniike, Toshiaki
Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement
title Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement
title_full Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement
title_fullStr Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement
title_full_unstemmed Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement
title_short Well-Defined Polypropylene/Polypropylene-Grafted Silica Nanocomposites: Roles of Number and Molecular Weight of Grafted Chains on Mechanistic Reinforcement
title_sort well-defined polypropylene/polypropylene-grafted silica nanocomposites: roles of number and molecular weight of grafted chains on mechanistic reinforcement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432204/
https://www.ncbi.nlm.nih.gov/pubmed/30974576
http://dx.doi.org/10.3390/polym8080300
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