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Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine

The mixing of polymers and nanoparticles is opening pathways for engineering flexible composites that exhibit advantageous functional properties. To fabricate controllable assembling nanocomposites for efficiently encapsulating methenamine and releasing them on demand, we functionalized the surface...

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Detalles Bibliográficos
Autores principales: Zhang, Minghui, Wang, Jinben, Zhang, Pei, Yan, Haike
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415060/
https://www.ncbi.nlm.nih.gov/pubmed/30966199
http://dx.doi.org/10.3390/polym10020163
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author Zhang, Minghui
Wang, Jinben
Zhang, Pei
Yan, Haike
author_facet Zhang, Minghui
Wang, Jinben
Zhang, Pei
Yan, Haike
author_sort Zhang, Minghui
collection PubMed
description The mixing of polymers and nanoparticles is opening pathways for engineering flexible composites that exhibit advantageous functional properties. To fabricate controllable assembling nanocomposites for efficiently encapsulating methenamine and releasing them on demand, we functionalized the surface of natural halloysite nanotubes (HNTs) selectively with polymerizable gemini surfactant which has peculiar aggregation behavior, aiming at endowing the nanomaterials with self-assembly and stimulative responsiveness characteristics. The micromorphology, grafted components and functional groups were identified using transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The created nanocomposites presented various characteristics of methenamine release with differences in the surface composition. It is particularly worth mentioning that the controlled release was more efficient with the increase of geminized monomer proportion, which is reasonably attributed to the fact that the amphiphilic geminized moieties with positive charge and obvious hydrophobic interactions interact with the outer and inner surface in different ways through fabricating polymeric shell as release stoppers at nanotube ends and forming polymer brush into the nanotube lumen for guest immobilization. Meanwhile, the nanocomposites present temperature and salinity responsive characteristics for the release of methenamine. The combination of HNTs with conjugated functional polymers will open pathways for engineering flexible composites which are promising for application in controlled release fields.
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spelling pubmed-64150602019-04-02 Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine Zhang, Minghui Wang, Jinben Zhang, Pei Yan, Haike Polymers (Basel) Article The mixing of polymers and nanoparticles is opening pathways for engineering flexible composites that exhibit advantageous functional properties. To fabricate controllable assembling nanocomposites for efficiently encapsulating methenamine and releasing them on demand, we functionalized the surface of natural halloysite nanotubes (HNTs) selectively with polymerizable gemini surfactant which has peculiar aggregation behavior, aiming at endowing the nanomaterials with self-assembly and stimulative responsiveness characteristics. The micromorphology, grafted components and functional groups were identified using transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The created nanocomposites presented various characteristics of methenamine release with differences in the surface composition. It is particularly worth mentioning that the controlled release was more efficient with the increase of geminized monomer proportion, which is reasonably attributed to the fact that the amphiphilic geminized moieties with positive charge and obvious hydrophobic interactions interact with the outer and inner surface in different ways through fabricating polymeric shell as release stoppers at nanotube ends and forming polymer brush into the nanotube lumen for guest immobilization. Meanwhile, the nanocomposites present temperature and salinity responsive characteristics for the release of methenamine. The combination of HNTs with conjugated functional polymers will open pathways for engineering flexible composites which are promising for application in controlled release fields. MDPI 2018-02-08 /pmc/articles/PMC6415060/ /pubmed/30966199 http://dx.doi.org/10.3390/polym10020163 Text en © 2018 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
Zhang, Minghui
Wang, Jinben
Zhang, Pei
Yan, Haike
Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine
title Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine
title_full Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine
title_fullStr Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine
title_full_unstemmed Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine
title_short Surface-Engineered Nanocontainers Based on Molecular Self-Assembly and Their Release of Methenamine
title_sort surface-engineered nanocontainers based on molecular self-assembly and their release of methenamine
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415060/
https://www.ncbi.nlm.nih.gov/pubmed/30966199
http://dx.doi.org/10.3390/polym10020163
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AT yanhaike surfaceengineerednanocontainersbasedonmolecularselfassemblyandtheirreleaseofmethenamine