scholarly journals Investigation of Surface Forces in Highly Viscous Polymer Solutions by Colloidal Probe AFM Method

2015 ◽  
Vol 52 (4) ◽  
pp. 188-195
Author(s):  
Takeshi Mori ◽  
Yuichi Iwakata ◽  
Tomohiro Matsuda ◽  
Hidehiro Kamiya
Keyword(s):  
Polymer Solutions ◽  
Surface Forces ◽  
Colloidal Probe ◽  
Viscous Polymer

Simulating Equilibrium Surface Forces in Polymer Solutions Using a Canonical Grid Method

2008 ◽  
Vol 112 (32) ◽  
pp. 9802-9809 ◽  
Author(s):  
Martin Turesson ◽  
Clifford E. Woodward ◽  
Torbjörn Åkesson ◽  
Jan Forsman
Keyword(s):  
Polymer Solutions ◽  
Grid Method ◽  
Surface Forces ◽  
Equilibrium Surface

Surface forces in athermal polymer solutions

1992 ◽  
Vol 97 (1) ◽  
pp. 695-702 ◽  
Author(s):  
C. E. Woodward
Keyword(s):  
Polymer Solutions ◽  
Surface Forces

New Process (Jet Cutting Method) for the Production of Spherical Beads from Highly Viscous Polymer Solutions

1998 ◽  
Vol 21 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Ulf Prüße ◽  
Barbara Fox ◽  
Martina Kirchhoff ◽  
Frank Bruske ◽  
Jürgen Breford ◽  
...  
Keyword(s):  
Polymer Solutions ◽  
Cutting Method ◽  
New Process ◽  
Viscous Polymer

scholarly journals Surface Forces between Nanomagnetite and Silica in Aqueous Ca2+ Solutions Studied with AFM Colloidal Probe Method

2020 ◽  
Vol 4 (3) ◽  
pp. 41
Author(s):  
Illia Dobryden ◽  
Elizaveta Mensi ◽  
Allan Holmgren ◽  
Nils Almqvist
Keyword(s):  
Iron Ore ◽  
Adhesion Force ◽  
Surface Forces ◽  
Adhesion Forces ◽  
Interaction Forces ◽  
Colloidal Probe ◽  
Force Microscopy ◽  
Atomic Force ◽  
Repulsive Forces ◽  
Qualitative Changes

Dispersion and aggregation of nanomagnetite (Fe3O4) and silica (SiO2) particles are of high importance in various applications, such as biomedicine, nanoelectronics, drug delivery, flotation, and pelletization of iron ore. In directly probing nanomagnetite–silica interaction, atomic force microscopy (AFM) using the colloidal probe technique has proven to be a suitable tool. In this work, the interaction between nanomagnetite and silica particles was measured with AFM in aqueous Ca2+ solution at different pH levels. This study showed that the qualitative changes of the interaction forces with pH and Ca2+ concentrations were consistent with the results from zeta-potential measurements. The repulsion between nanomagnetite and silica was observed at alkaline pH and 1 mM Ca2+ concentration, but no repulsive forces were observed at 3 mM Ca2+ concentration. The interaction forces on approach were due to van der Waals and electrical double-layer forces. The good fitting of experimental data to the DLVO model and simulations supported this conclusion. However, contributions from non-DLVO forces should also be considered. It was shown that an increase of Ca2+ concentration from 1 to 3.3 mM led to a less pronounced decrease of adhesion force with increasing pH. A comparison of measured and calculated adhesion forces with a few contact mechanics models demonstrated an important impact of nanomagnetite layer nanoroughness.

Photoinduced Shuttling Dynamics of Rotaxanes in Viscous Polymer Solutions

2009 ◽  
Vol 19 (21) ◽  
pp. 3440-3449 ◽  
Author(s):  
Dhiredj C. Jagesar ◽  
Sandro M. Fazio ◽  
Jimmy Taybi ◽  
Erika Eiser ◽  
Francesco G. Gatti ◽  
...  
Keyword(s):  
Polymer Solutions ◽  
Viscous Polymer
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