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Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films
Nanodiamonds (NDs) can considerably improve the mechanical and thermal properties of polymeric composites. However, the tendency of NDs to aggregate limits the potential of these non-toxic, mechanically- and chemically-robust nanofillers. In this work, tough, flexible, and stimuli-responsive polyele...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182812/ https://www.ncbi.nlm.nih.gov/pubmed/32110929 http://dx.doi.org/10.3390/polym12030507 |
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author | Tiainen, Tony Lobanova, Marina Karjalainen, Erno Tenhu, Heikki Hietala, Sami |
author_facet | Tiainen, Tony Lobanova, Marina Karjalainen, Erno Tenhu, Heikki Hietala, Sami |
author_sort | Tiainen, Tony |
collection | PubMed |
description | Nanodiamonds (NDs) can considerably improve the mechanical and thermal properties of polymeric composites. However, the tendency of NDs to aggregate limits the potential of these non-toxic, mechanically- and chemically-robust nanofillers. In this work, tough, flexible, and stimuli-responsive polyelectrolyte films composed of cross-linked poly(butyl acrylate-co-dimethylaminoethyl methacrylate) (P(BA-co-DMAEMA)) were prepared by photopolymerization. The effects of the added carboxylate-functionalized NDs on their mechanical and stimuli-responsive properties were studied. When the negatively charged NDs were added to the polymerization media directly, the mechanical properties of the films changed only slightly, because of the uneven distribution of the aggregated NDs in the films. In order to disperse and distribute the NDs more evenly, a prepolymerized polycation block copolymer complexing agent was used during the photopolymerization process. This approach improved the mechanical properties of the films and enhanced their thermally-induced, reversible phase-transition behavior. |
format | Online Article Text |
id | pubmed-7182812 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-71828122020-05-01 Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films Tiainen, Tony Lobanova, Marina Karjalainen, Erno Tenhu, Heikki Hietala, Sami Polymers (Basel) Article Nanodiamonds (NDs) can considerably improve the mechanical and thermal properties of polymeric composites. However, the tendency of NDs to aggregate limits the potential of these non-toxic, mechanically- and chemically-robust nanofillers. In this work, tough, flexible, and stimuli-responsive polyelectrolyte films composed of cross-linked poly(butyl acrylate-co-dimethylaminoethyl methacrylate) (P(BA-co-DMAEMA)) were prepared by photopolymerization. The effects of the added carboxylate-functionalized NDs on their mechanical and stimuli-responsive properties were studied. When the negatively charged NDs were added to the polymerization media directly, the mechanical properties of the films changed only slightly, because of the uneven distribution of the aggregated NDs in the films. In order to disperse and distribute the NDs more evenly, a prepolymerized polycation block copolymer complexing agent was used during the photopolymerization process. This approach improved the mechanical properties of the films and enhanced their thermally-induced, reversible phase-transition behavior. MDPI 2020-02-26 /pmc/articles/PMC7182812/ /pubmed/32110929 http://dx.doi.org/10.3390/polym12030507 Text en © 2020 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 Tiainen, Tony Lobanova, Marina Karjalainen, Erno Tenhu, Heikki Hietala, Sami Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films |
title | Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films |
title_full | Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films |
title_fullStr | Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films |
title_full_unstemmed | Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films |
title_short | Stimuli-Responsive Nanodiamond–Polyelectrolyte Composite Films |
title_sort | stimuli-responsive nanodiamond–polyelectrolyte composite films |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182812/ https://www.ncbi.nlm.nih.gov/pubmed/32110929 http://dx.doi.org/10.3390/polym12030507 |
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