Reentrant equilibrium disordering in nanoparticle–polymer mixtures

Colloids: Polymers hold it together, for a while Polymers need to be the right length if they are to hold NPs into a crystal structure, shows research from scientists in the USA. Sanat Kumar from Columbia University and colleagues explain why small particles suspended in a solution, known as a collo...

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Autores principales:	Dong Meng, Sanat K. Kumar, Gary S. Grest, Nathan A. Mahynski, Athanassios Z. Panagiotopoulos
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/0933d66e31bd47e5a484f763412ec2dd
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id	oai:doaj.org-article:0933d66e31bd47e5a484f763412ec2dd
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spelling	oai:doaj.org-article:0933d66e31bd47e5a484f763412ec2dd2021-12-02T15:18:49ZReentrant equilibrium disordering in nanoparticle–polymer mixtures10.1038/s41524-016-0005-82057-3960https://doaj.org/article/0933d66e31bd47e5a484f763412ec2dd2017-01-01T00:00:00Zhttps://doi.org/10.1038/s41524-016-0005-8https://doaj.org/toc/2057-3960Colloids: Polymers hold it together, for a while Polymers need to be the right length if they are to hold NPs into a crystal structure, shows research from scientists in the USA. Sanat Kumar from Columbia University and colleagues explain why small particles suspended in a solution, known as a colloid, become ordered then disordered when a polymer is added. The particles in a colloid are usually free to move around, but the addition of a polymer causes them to form a crystal-like structure. Adding more polymer returns the colloid to a disordered state. Kumar et al. use molecular dynamic simulations and density functional theory to show that this occurs because, while the crystal is stabilized at intermediate polymer density by polymer-induced nanoparticle attraction, it is destabilized at higher densities when the longer polymer chains can’t fit in the gaps between the particles.Dong MengSanat K. KumarGary S. GrestNathan A. MahynskiAthanassios Z. PanagiotopoulosNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 3, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Dong Meng Sanat K. Kumar Gary S. Grest Nathan A. Mahynski Athanassios Z. Panagiotopoulos Reentrant equilibrium disordering in nanoparticle–polymer mixtures
description	Colloids: Polymers hold it together, for a while Polymers need to be the right length if they are to hold NPs into a crystal structure, shows research from scientists in the USA. Sanat Kumar from Columbia University and colleagues explain why small particles suspended in a solution, known as a colloid, become ordered then disordered when a polymer is added. The particles in a colloid are usually free to move around, but the addition of a polymer causes them to form a crystal-like structure. Adding more polymer returns the colloid to a disordered state. Kumar et al. use molecular dynamic simulations and density functional theory to show that this occurs because, while the crystal is stabilized at intermediate polymer density by polymer-induced nanoparticle attraction, it is destabilized at higher densities when the longer polymer chains can’t fit in the gaps between the particles.
format	article
author	Dong Meng Sanat K. Kumar Gary S. Grest Nathan A. Mahynski Athanassios Z. Panagiotopoulos
author_facet	Dong Meng Sanat K. Kumar Gary S. Grest Nathan A. Mahynski Athanassios Z. Panagiotopoulos
author_sort	Dong Meng
title	Reentrant equilibrium disordering in nanoparticle–polymer mixtures
title_short	Reentrant equilibrium disordering in nanoparticle–polymer mixtures
title_full	Reentrant equilibrium disordering in nanoparticle–polymer mixtures
title_fullStr	Reentrant equilibrium disordering in nanoparticle–polymer mixtures
title_full_unstemmed	Reentrant equilibrium disordering in nanoparticle–polymer mixtures
title_sort	reentrant equilibrium disordering in nanoparticle–polymer mixtures
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0933d66e31bd47e5a484f763412ec2dd
work_keys_str_mv	AT dongmeng reentrantequilibriumdisorderinginnanoparticlepolymermixtures AT sanatkkumar reentrantequilibriumdisorderinginnanoparticlepolymermixtures AT garysgrest reentrantequilibriumdisorderinginnanoparticlepolymermixtures AT nathanamahynski reentrantequilibriumdisorderinginnanoparticlepolymermixtures AT athanassioszpanagiotopoulos reentrantequilibriumdisorderinginnanoparticlepolymermixtures
_version_	1718387430144344064

Reentrant equilibrium disordering in nanoparticle–polymer mixtures

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