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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...

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Detalles Bibliográficos
Autores principales: Tiainen, Tony, Lobanova, Marina, Karjalainen, Erno, Tenhu, Heikki, Hietala, Sami
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
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.
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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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