Colloid particle deposition on heterogeneous surfaces produced by polyelectrolyte adsorption

Adamczyk, Zbǐgniew; Bratek, Anna; Szelag, E; Bastrzyk, Anna; Michna, Aneta; Barbasz, Jakub

doi:10.1016/j.colsurfa.2009.01.037

Cited by 22 publications

(11 citation statements)

References 28 publications

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“…After the examination of the overall structure and the arrangement of polyanion and polycation chains within the multilayer, we compare the average structure of such chains to the reference case corresponding to polyanions and polycations at infinite dilution. Even though the structural properties of high molecular weight PDADMAC and PSS chains are well known, [102][103][104] these cannot be extrapolated to such low molecular weight oligomers as the ones sampled here. Since oligomers are not expected to follow the same scaling laws, we need to perform a direct charac- terization of their structure.…”

Section: Oe Chain Configurationsmentioning

confidence: 92%

Atomistic simulation of PDADMAC/PSS oligoelectrolyte multilayers: overall comparison of tri- and tetra-layer systems

et al. 2019

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By employing large-scale molecular dynamics simulations of atomistically resolved oligoelectrolytes in aqueous solutions, we study in detail the first four layer-by-layer deposition cycles of an oligoelectrolyte multilayer made of poly(diallyl dimethyl ammonium chloride)/poly(styrene sulfonate sodium salt) (PDADMAC/PSS). The multilayers are grown on a silica substrate in 0.1M NaCl electrolyte solutions and the swollen structures are then subsequently exposed to varying added salt concentration. We investigated the microscopic properties of the films, analyzing in detail the differences between three-and four-layers systems. Our simulations provide insights on the early stages of growth of a multilayer, which are particularly challenging for experimental observations. We found a rather strong entanglement of the oligoelectrolytes, with a fuzzy layering of the film structure. The main charge compensation mechanism is for all cases intrinsic, whereas extrinsic compensation is relatively ehanced for the layer of the last deposition cycle. In addition, we quantified other fundamental observables of these systems, as the film thickness, water uptake, and overcharge fractions for each deposition layer.

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Section: Oe Chain Configurationsmentioning

confidence: 92%

Atomistic simulation of PDADMAC/PSS oligoelectrolyte multilayers: overall comparison of tri- and tetra-layer systems

et al. 2019

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“…[114][115][116] that the streaming potential method can be exploited as a convenient tool for characterizing the formation of polyelectrolyte multilayers on solid substrates, produced in the layer by layer deposition processes. Examples of such results are shown in Figs.…”

Section: Polyelectrolyte and Protein Covered Surfacesmentioning

confidence: 99%

“…The first layer of this system consisted of a saturated (precursor) layer of PEI produced under diffusion transport conditions for deposition time of 20 min, from a 2 ppm solution (pH = 5.5, I =10 − 2 M NaCl). The zeta potential of such a layer was ς i =40 mV [116]. Then, a second layer of PAA of molecular weights 14 kD and 70 kD was deposited under the same transport conditions, from 2 ppm solutions (the bulk zeta potential value of PAA, determined by microelectrophoresis was ζ p = −19 mV).…”

Section: Polyelectrolyte and Protein Covered Surfacesmentioning

confidence: 99%

Streaming potential studies of colloid, polyelectrolyte and protein deposition

Adamczyk

Sadlej

Wajnryb

et al. 2010

Advances in Colloid and Interface Science

137

194

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“…Weak polyelectrolyte-based BCPs with constituent blocks such as carboxylic acids, phosphoric acid, and amines show different ionization degrees depending on the pH of the surrounding environment [ 225 ]. This leads to conformational changes due to different interactions among polymeric chains and also to the formation of hydrogen bonds.…”

Section: Block Copolymer Systems Based On Weak Polyelectrolytesmentioning

confidence: 99%

Weak Polyelectrolytes as Nanoarchitectonic Design Tools for Functional Materials: A Review of Recent Achievements

et al. 2022

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The ionization degree, charge density, and conformation of weak polyelectrolytes can be adjusted through adjusting the pH and ionic strength stimuli. Such polymers thus offer a range of reversible interactions, including electrostatic complexation, H-bonding, and hydrophobic interactions, which position weak polyelectrolytes as key nano-units for the design of dynamic systems with precise structures, compositions, and responses to stimuli. The purpose of this review article is to discuss recent examples of nanoarchitectonic systems and applications that use weak polyelectrolytes as smart components. Surface platforms (electrodeposited films, brushes), multilayers (coatings and capsules), processed polyelectrolyte complexes (gels and membranes), and pharmaceutical vectors from both synthetic or natural-type weak polyelectrolytes are discussed. Finally, the increasing significance of block copolymers with weak polyion blocks is discussed with respect to the design of nanovectors by micellization and film/membrane nanopatterning via phase separation.

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Colloid particle deposition on heterogeneous surfaces produced by polyelectrolyte adsorption

Cited by 22 publications

References 28 publications

Atomistic simulation of PDADMAC/PSS oligoelectrolyte multilayers: overall comparison of tri- and tetra-layer systems

Atomistic simulation of PDADMAC/PSS oligoelectrolyte multilayers: overall comparison of tri- and tetra-layer systems

Streaming potential studies of colloid, polyelectrolyte and protein deposition

Weak Polyelectrolytes as Nanoarchitectonic Design Tools for Functional Materials: A Review of Recent Achievements

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