Conformations of Block Copolymers Terminally Adsorbed at the Solid-Liquid Interface

Toprakcioglu, Chris; Dai, Liming; Ansarifar, M. A.

doi:10.1080/10101329208054575

Cited by 4 publications

(7 citation statements)

References 2 publications

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“…Consequently, the volume profile in block copolymers exhibits a parabolic decay with distance (52,53). In the case of random copolymers, in addition to the solvent quality and the copolymer chain length, adsorption is also strongly affected by the composition and distribution of the monomers along the chain.…”

Section: Adsorption Of Copolymersmentioning

confidence: 99%

Polymer Adsorption

Pavlukhina¹,

Sukhishvili²

2010

Encyclopedia of Polymer Science and Technology

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Adsorbed polymers at interfaces are used to control interactions between surfaces in a wide range of applications such as lubrication, adhesion, food processing, and paints. Recent developments have enabled new applications using adsorbed polymers to create surfaces capable of regulating cell adhesion and proliferation. This article summarizes the current theoretical understanding of polymer adsorption and the experimental techniques used to study adsorption of neutral and charged polymers.

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Section: Adsorption Of Copolymersmentioning

confidence: 99%

Polymer Adsorption

Pavlukhina¹,

Sukhishvili²

2010

Encyclopedia of Polymer Science and Technology

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“…Polymer brushes (i.e., anchored polymers) are routinely used to tailor properties of surfaces such as mica or gold to achieve desired functionalities such as stimuli responsiveness − and colloidal stabilization. ,− For example, it is well-known that unmodified/bare nanoparticles tend to aggregate due to short-range attractive van der Waals and depletion interactions. Such an aggregation can be avoided by anchoring polymers on the nanoparticles leading to desirable well-dispersed formulations in solutions as well as in melt states.…”

Section: Introductionmentioning

confidence: 99%

“…The underlying origin of such a stabilization of colloidal dispersions is the entropic penalty of the polymer chains under compression leading to strong repulsive interactions, which can overwhelm short-range attractive van der Waals interactions. A number of experimental reports, − self-consistent field theory (SCFT), − molecular dynamics (MD) simulations, ,− and studies based on scaling theory ,,, have focused on understanding the interactions between two surfaces bearing anchored or adsorbed polymers. One of the ways to characterize these interactions is by measuring the normal force versus separation distance, for example, using a surface forces apparatus (SFA) or atomic force microscopes (AFM).…”

Section: Introductionmentioning

confidence: 99%

“…One of the ways to characterize these interactions is by measuring the normal force versus separation distance, for example, using a surface forces apparatus (SFA) or atomic force microscopes (AFM). The effects of various parameters such as chain polydispersity, the presence or absence of solvent, , solvent quality, ,,, temperature, ,, polymer molecular weight, , grafting density, ,,, chain architecture (whether linear/cyclic or diblock/triblock copolymer), ,,, surface roughness, and its curvature (whether flat or cylindrical or spherical) on the force–distance relations have been investigated.…”

Section: Introductionmentioning

confidence: 99%

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Attraction between Opposing Planar Dipolar Polymer Brushes

2017

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We use a field theory approach to study the effects of permanent dipoles on interpenetration and free energy changes as a function of distance between two identical planar polymer brushes. Melts (i.e., solvent-free) and solvated brushes made up of polymers grafted on nonadsorbing substrates are studied. In particular, the weak coupling limit of the dipolar interactions is considered, which leads to concentration-dependent pairwise interactions, and the effects of orientational order are neglected. It is predicted that a gradual increase in the dipole moment of the polymer segments can lead to attractive interactions between the brushes at intermediate separation distances. Because classical theory of polymer brushes based on the strong stretching limit (SSL) and the standard self-consistent field theory (SCFT) simulations using the Flory's χ parameter always predicts repulsive interactions at all separations, our work highlights the importance of dipolar interactions in tailoring and accurately predicting forces between polar polymeric interfaces in contact with each other.

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“…Inset shows the same curve as (b) on a log-linear scale. The solid and open symbols represent compressions and decompressions, respectively[96].…”

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confidence: 99%

Functionalized surfaces based on polymers and carbon nanotubes for some biomedical and optoelectronic applications

Dai¹,

2003

Nanotechnology

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It has been long recognized that surface properties are of paramount importance for a broad range of materials and a large variety of devices. The recent development of nanoscience and nanotechnology has opened up novel fundamental and applied frontiers in surface functionalization and characterization. At the nanometre scale, the high surface-to-volume ratio characteristic of most nanomaterials has been demonstrated to have a tremendous influence of many fundamental material properties and device performance. In this paper, we present some of the important issues on the surface functionalization and characterization of polymers and carbon nanotubes for certain biomedical and optoelectronic applications and summarize our recent research activities along this line.

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Conformations of Block Copolymers Terminally Adsorbed at the Solid-Liquid Interface

Cited by 4 publications

References 2 publications

Polymer Adsorption

Polymer Adsorption

Attraction between Opposing Planar Dipolar Polymer Brushes

Functionalized surfaces based on polymers and carbon nanotubes for some biomedical and optoelectronic applications

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