scholarly journals Theoretical Approaches to Neutral and Charged Polymer Brushes

2006 ◽  
pp. 149-183 ◽  
Author(s):  
Ali Naji ◽  
Christian Seidel ◽  
Roland R. Netz
Keyword(s):  
Polymer Brushes ◽  
Theoretical Approaches ◽  
Charged Polymer

Binding of ionic surfactants to charged polymer brushes grafted onto porous substrates

2002 ◽  
Vol 954 (1-2) ◽  
pp. 89-97 ◽  
Author(s):  
Haruhiko Ogawa ◽  
Kazuyuki Sugita ◽  
Kyoichi Saito ◽  
Min Kim ◽  
Masao Tamada ◽  
...  
Keyword(s):  
Polymer Brushes ◽  
Ionic Surfactants ◽  
Charged Polymer ◽  
Porous Substrates

Dynamics of water, hydrated-ions and charged polymers in highly-confined films, and their role in friction modification

2003 ◽  
Vol 790 ◽  
Author(s):  
Jacob Klein ◽  
Uri Raviv ◽  
Susan Perkin ◽  
Nir Kampf ◽  
Suzanne Giasson
Keyword(s):  
Polymer Brushes ◽  
Aqueous Media ◽  
Free Water ◽  
Aqueous Salt Solution ◽  
Ball Bearings ◽  
High Concentration ◽  
Charged Surfaces ◽  
Hydrated Ions ◽  
Charged Polymer ◽  
The One

ABSTRACTRecent studies have revealed that, in contrast to non-associating liquids such as oils or organic solvents, salt-free water retains a viscosity close to its bulk value even when confined to films thinner than some 3 nm, indeed down to only one or two monolayers thick [1,2]. For the case of high concentration aqueous salt solution compressed down to subnanometer films between charged surfaces, the trapped hydrated ions serve to act as molecular ball-bearings, sustaining a large load while remaining very fluid under shear [3]. This behaviour is attributed to the tenacity of the hydration sheaths together with their rapid relaxation time. Finally, a very recent study [4] has shown that when charged polymer brushes in aqueous media are compressed and slid past each other, they provide a lubrication that is considerably superior to that afforded by neutral brushes: This is attributed on the one hand to the resistance to mutual interpenetration of the chains due to entropic barriers in the good-solvent conditions, and, on the other hand, to the hydration-sheaths on the charged polymer segments which can act – as noted above – as molecular ball-bearings.

Approaching charged polymer brushes

2011 ◽  
Author(s):  
Long Chen ◽  
Holger Merlitz ◽  
Su-zhen He ◽  
Chen-xu Wu ◽  
Jens-Uwe Sommer
Keyword(s):  
Polymer Brushes ◽  
Charged Polymer

Charged Polymer Brushes: Counterion Incorporation and Scaling Relations

1998 ◽  
Vol 81 (19) ◽  
pp. 4172-4175 ◽  
Author(s):  
Heiko Ahrens ◽  
Stephan Förster ◽  
Christiane A. Helm
Keyword(s):  
Polymer Brushes ◽  
Scaling Relations ◽  
Charged Polymer

The kinetic friction coefficient of neutral and charged polymer brushes

Soft Matter ◽  
2013 ◽  
Vol 9 (10) ◽  
pp. 2966 ◽  
Author(s):  
Florent Goujon ◽  
Aziz Ghoufi ◽  
Patrice Malfreyt ◽  
Dominic J. Tildesley
Keyword(s):  
Friction Coefficient ◽  
Polymer Brushes ◽  
Kinetic Friction ◽  
Charged Polymer

Voltage-controlled flow regulating in nanofluidic channels with charged polymer brushes

2010 ◽  
Vol 9 (4-5) ◽  
pp. 915-922 ◽  
Author(s):  
Hui Ouyang ◽  
Zhenhai Xia ◽  
Jiang Zhe
Keyword(s):  
Polymer Brushes ◽  
Nanofluidic Channels ◽  
Charged Polymer ◽  
Controlled Flow

Scaling Laws for the Swelling of Neutral and Charged Polymer Brushes in Good Solvents

2002 ◽  
Vol 35 (2) ◽  
pp. 499-507 ◽  
Author(s):  
M. Biesalski ◽  
J. Rühe
Keyword(s):  
Polymer Brushes ◽  
Scaling Laws ◽  
Charged Polymer

Adsorption and separation of amyloid beta aggregates using ferromagnetic nanoparticles coated with charged polymer brushes

2015 ◽  
Vol 3 (16) ◽  
pp. 3351-3357 ◽  
Author(s):  
Tong Bu ◽  
Tamotsu Zako ◽  
Martin Zeltner ◽  
Karin M. Sörgjerd ◽  
Christoph M. Schumacher ◽  
...  
Keyword(s):  
Amyloid Beta ◽  
Polymer Brushes ◽  
Cationic Polymer ◽  
Ferromagnetic Nanoparticles ◽  
P Adsorption ◽  
Charged Polymer

Adsorption and separation of toxic Aβ aggregates (fibrils and oligomers) using ferromagnetic nanoparticles functionalized with a cationic polymer (C/Co@polyMAPTAC) was demonstrated.

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