Colloidal Particles in Competition for Stabilizer: A Solvent Relaxation NMR Study of Polymer Adsorption and Desorption

Catherine L. Cooper; Terence Cosgrove; Jeroen S. van Duijneveldt; Martin Murray; Stuart W. Prescott

doi:10.1021/la303864h

Colloidal Particles in Competition for Stabilizer: A Solvent Relaxation NMR Study of Polymer Adsorption and Desorption

Catherine L. Cooper^*, Terence Cosgrove, Jeroen S. van Duijneveldt, Martin Murray, Stuart W. Prescott

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

The competitive adsorption of poly(vinylpyrrolidone) onto silica and alumina-modified silica particles was studied using solvent relaxation nuclear magnetic resonance. The additive nature of the measured relaxation rate enabled predictions to be made of the relaxation rate in different polymer adsorption scenarios. Preferential adsorption of the poly(vinylpyrrolidone) onto the unmodified silica particles occurred when there was insufficient polymer in the system to coat the entire available surface area. Desorption was also found to occur when the polymer was initially adsorbed upon the alumina-modified particle and silica particles were added.

Original language	English
Pages (from-to)	16588-16595
Number of pages	8
Journal	Langmuir
Volume	28
Issue number	48
DOIs	https://doi.org/10.1021/la303864h
Publication status	Published - 4 Dec 2012

Keywords

NUCLEAR MAGNETIC-RESONANCE
SOLID-LIQUID INTERFACE
POLY(ETHYLENE OXIDE)
POLYVINYL PYRROLIDONE)
POLY(VINYL PYRROLIDONE)
MOLECULAR WEIGHT
SILICA
NANOPARTICLES
DISPLACEMENT
SURFACE

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@article{c675af1ba3004c74b7058214f3362173,

title = "Colloidal Particles in Competition for Stabilizer: A Solvent Relaxation NMR Study of Polymer Adsorption and Desorption",

abstract = "The competitive adsorption of poly(vinylpyrrolidone) onto silica and alumina-modified silica particles was studied using solvent relaxation nuclear magnetic resonance. The additive nature of the measured relaxation rate enabled predictions to be made of the relaxation rate in different polymer adsorption scenarios. Preferential adsorption of the poly(vinylpyrrolidone) onto the unmodified silica particles occurred when there was insufficient polymer in the system to coat the entire available surface area. Desorption was also found to occur when the polymer was initially adsorbed upon the alumina-modified particle and silica particles were added.",

keywords = "NUCLEAR MAGNETIC-RESONANCE, SOLID-LIQUID INTERFACE, POLY(ETHYLENE OXIDE), POLYVINYL PYRROLIDONE), POLY(VINYL PYRROLIDONE), MOLECULAR WEIGHT, SILICA, NANOPARTICLES, DISPLACEMENT, SURFACE",

author = "Cooper, \{Catherine L.\} and Terence Cosgrove and \{van Duijneveldt\}, \{Jeroen S.\} and Martin Murray and Prescott, \{Stuart W.\}",

year = "2012",

month = dec,

day = "4",

doi = "10.1021/la303864h",

language = "English",

volume = "28",

pages = "16588--16595",

journal = "Langmuir",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "48",

}

TY - JOUR

T1 - Colloidal Particles in Competition for Stabilizer: A Solvent Relaxation NMR Study of Polymer Adsorption and Desorption

AU - Cooper, Catherine L.

AU - Cosgrove, Terence

AU - van Duijneveldt, Jeroen S.

AU - Murray, Martin

AU - Prescott, Stuart W.

PY - 2012/12/4

Y1 - 2012/12/4

N2 - The competitive adsorption of poly(vinylpyrrolidone) onto silica and alumina-modified silica particles was studied using solvent relaxation nuclear magnetic resonance. The additive nature of the measured relaxation rate enabled predictions to be made of the relaxation rate in different polymer adsorption scenarios. Preferential adsorption of the poly(vinylpyrrolidone) onto the unmodified silica particles occurred when there was insufficient polymer in the system to coat the entire available surface area. Desorption was also found to occur when the polymer was initially adsorbed upon the alumina-modified particle and silica particles were added.

AB - The competitive adsorption of poly(vinylpyrrolidone) onto silica and alumina-modified silica particles was studied using solvent relaxation nuclear magnetic resonance. The additive nature of the measured relaxation rate enabled predictions to be made of the relaxation rate in different polymer adsorption scenarios. Preferential adsorption of the poly(vinylpyrrolidone) onto the unmodified silica particles occurred when there was insufficient polymer in the system to coat the entire available surface area. Desorption was also found to occur when the polymer was initially adsorbed upon the alumina-modified particle and silica particles were added.

KW - NUCLEAR MAGNETIC-RESONANCE

KW - SOLID-LIQUID INTERFACE

KW - POLY(ETHYLENE OXIDE)

KW - POLYVINYL PYRROLIDONE)

KW - POLY(VINYL PYRROLIDONE)

KW - MOLECULAR WEIGHT

KW - SILICA

KW - NANOPARTICLES

KW - DISPLACEMENT

KW - SURFACE

U2 - 10.1021/la303864h

DO - 10.1021/la303864h

M3 - Article (Academic Journal)

C2 - 23137265

SN - 0743-7463

VL - 28

SP - 16588

EP - 16595

JO - Langmuir

JF - Langmuir

IS - 48

ER -

Colloidal Particles in Competition for Stabilizer: A Solvent Relaxation NMR Study of Polymer Adsorption and Desorption

Abstract

Keywords

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