Interplay between Interparticle Potential and Adsorption Structure in Nanoparticle Dispersions with Polymer Addition as Displayed by Small-Angle Scattering.

Langmuir : the ACS Journal of Surfaces and Colloids
Takumi KusanoMasashi Harada

Abstract

The effect of polymer adsorption on the dispersion stability of particles is an important subject applicable to various manufacturing processes. In this study, small-angle scattering was used to examine the relationship between interparticle potential and polymer adsorption in dispersions of nanoparticles with an 81 Å radius containing two types of polymers. Small-angle X-ray scattering (SAXS) measurements in a silica/polyacrylamide (PAAm) system showed an increase in interparticle attractive interactions as PAAm concentration was increased. In a silica/poly(ethylene oxide) (PEO) system, the correlation between PEO concentration and interparticle potential strength became negligible at higher concentrations. Hence, the contrast variation small-angle neutron scattering (CV-SANS) method was employed to evaluate the interparticle potential and polymer adsorption simultaneously. CV-SANS revealed that PAAm was adsorbed to silica particles with a polymer shell layer thickness of 186 Å. The attractive potential observed in the absorbed layer region can be attributed to bridging PAAm molecules between the silica particles. By contrast, CV-SANS of the silica/PEO system indicated a low-polymer-concentration layer with a thickness of 34 Å...Continue Reading

References

Nov 3, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A M HechtE Geissler
Mar 3, 2005·The Journal of Chemical Physics·Yun LiuSow-Hsin Chen
Sep 9, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·José HierrezueloMichal Borkovec
Nov 26, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Fan XuJian Xie
Apr 7, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·So Youn Kim, Charles F Zukoski
Feb 3, 2012·Chemical Reviews·Krishnendu SahaVincent M Rotello
Jun 12, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Sanghyuk LimMasato Yamamura
Mar 22, 2014·Soft Matter·Istvan SzilagyiMichal Borkovec
Apr 16, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Indresh YadavJ Kohlbrecher
Nov 7, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Sugam KumarJ Kohlbrecher
Jan 23, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Sunhyung KimKyung Hyun Ahn
Nov 7, 2015·Proceedings of the National Academy of Sciences of the United States of America·Peter J ChungCyrus R Safinya
Jan 23, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Sugam KumarJoachim Kohlbrecher
Apr 8, 2016·Chemical Reviews·Tao LiByeongdu Lee
Jun 15, 2016·Physical Review. E·Indresh YadavJoachim Kohlbrecher
Sep 13, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jie ChenYun Liu
Jan 14, 2017·Physical Review. E·Álvaro González García, Remco Tuinier

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.