Interaction and structure of surfaces coated by poly(vinyl amines) of different line charge densities

The Journal of Physical Chemistry. B
Luke J KirwanMichal Borkovec

Abstract

Interactions between preadsorbed films of poly(vinyl amine) (PVA) of two different line charge densities on silica substrates were studied with the colloidal probe technique based on the atomic force microscope (AFM). The preadsorbed films were prepared by adsorption of PVA from a pH 4 solution without any added salt. The highly charged PVA adsorbs in a flat configuration and in laterally heterogeneous layers, while the more weakly charged PVA analog adsorbs in thicker and more homogeneous films. As revealed by reflectivity measurements, such preadsorbed PVA films are stable in polyelectrolyte-free solutions. However, force measurements with the colloidal probe reveal that their interactions depend strongly on the ionic strength. Upon approach, interactions are dominated by electrostatic diffuse layer overlap forces. Both PVA films have very similar diffuse layer charge densities of about 1.5 mC/m2. Since these values are substantially lower than what would be expected from the total charge of the adsorbed polyelectrolytes measured by reflectivity, we infer that coadsorption of anions represents the principal mechanism in charge neutralization. Upon retraction, the adhesion between the films is dominated by bridging forces due ...Continue Reading

References

Jun 24, 2003·Advances in Colloid and Interface Science·Per M ClaessonOrlando J Rojas
Jul 30, 2003·Journal of Colloid and Interface Science·Josiane WidmaierHelmut Auweter
Oct 2, 2003·Angewandte Chemie·Dmitry G ShchukinHelmuth Möhwald
Nov 17, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Z AdamczykB Jachimska
Mar 24, 2005·Physical Review Letters·Thorsten HugelRoland R Netz
Apr 6, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Jörg KleimannMichal Borkovec
Jun 7, 2005·Advances in Colloid and Interface Science·Per M ClaessonAndra Dedinaite
Jun 15, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Motoyoshi KobayashiMichal Borkovec
Oct 26, 2005·Journal of Colloid and Interface Science·Ramon Pericet-CamaraMichal Borkovec
Nov 3, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Bingyun SunDaniel T Chiu
Nov 15, 2005·Biomacromolecules·Igor L RadtchenkoMichal Borkovec
Dec 1, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Xiaonong ChenRobert Pelton
May 3, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Andrew M HoweJulien Leroy
Sep 19, 2006·Journal of Colloid and Interface Science·Jörg KleimannMichal Borkovec
Dec 13, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Georg PapastavrouMichal Borkovec
Jan 25, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Gregory FranciusVincent Ball
Feb 17, 2007·Journal of Colloid and Interface Science·Ionel PopaMichal Borkovec
Apr 28, 2007·Water Research·Brian Bolto, John Gregory
May 1, 2007·The Journal of Physical Chemistry. B·Graeme GilliesMichal Borkovec
May 2, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Kai Loon ChenMenachem Elimelech
Jul 5, 2007·The Journal of Physical Chemistry. B·S SchwarzJ Bohrisch
Oct 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Stephan Block, Christiane A Helm

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Citations

Apr 30, 2010·Physical Chemistry Chemical Physics : PCCP·Ionel PopaMichal Borkovec
Mar 22, 2014·Soft Matter·Istvan SzilagyiMichal Borkovec
Jul 15, 2015·ACS Applied Materials & Interfaces·Marieke FüllbrandtRegine von Klitzing
May 4, 2010·Angewandte Chemie·Ionel PopaMichal Borkovec
Mar 14, 2018·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Silke HeinenMarie Weinhart
Jun 19, 2009·The Journal of Physical Chemistry. B·Ionel PopaMichal Borkovec
Oct 6, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Ionel PopaBo Jönsson
Aug 3, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Rubens A SilvaPaul L Dubin
Jun 2, 2011·The Journal of Physical Chemistry. B·Oznur KaftanGeorg Papastavrou
Jun 26, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Robert Pelton
Aug 29, 2019·ACS Omega·Feng-I TaiThomas Ederth

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