Surface Rearrangement of Diblock Copolymer Brushes—Stimuli Responsive Films

Brittain, William J.; Boyes, Stephen G.; Granville, Anthony M.; Baum, Marina; Mirous, Brian K.; Zhao, Bin; Blickle, Carl; Foster, Mark D.

doi:10.1007/12_061

Cited by 86 publications

(80 citation statements)

References 66 publications

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“…For many cases in the literature that have reported initiation efficiency, 10% is an average value. 43 To verify whether the ''grafting-from'' method has produced a polymer brush, the molecular weight of the surface-immobilized polymer should be measured. Ideally, degrafting the polymer brush and subsequent molecular weight analysis is ideal.…”

Section: The Definition Of a Polymer Brush By Characteristic Parametementioning

confidence: 99%

“…It has been reported that there is a reasonable correlation between molecular weight and polydispersity for free polymer and the polymer brush for brush growth via atom transfer radical polymerization. 43 Therefore, in some cases, the free polymer molecular weight can be used to verify the polymer brush structure.…”

Section: The Definition Of a Polymer Brush By Characteristic Parametementioning

confidence: 99%

See 1 more Smart Citation

A structural definition of polymer brushes

Brittain

Minko

2007

J. Polym. Sci. A Polym. Chem.

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563

652

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ABSTRACT:In this article, we consolidate several literature reports in an attempt to provide a structural definition of a polymer brush as a tethered polymer layer with a high grafting density of polymer chains. We will try to distinguish a brush from grafted polymer layers and coated layers and provide a reasonable approach to the description of the brush regime with a single parameter S-reduced grafting density. Furthermore, we will attempt to describe the relevance of this description to applications. This article is timely given the continuing interest relating to brushes on flat substrates, nanoparticles, and the walls of micro-channels.

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Section: The Definition Of a Polymer Brush By Characteristic Parametementioning

confidence: 99%

Section: The Definition Of a Polymer Brush By Characteristic Parametementioning

confidence: 99%

A structural definition of polymer brushes

Brittain

Minko

2007

J. Polym. Sci. A Polym. Chem.

Self Cite

563

652

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“…54,55 The concept of "pinned micelles" was first published in 1996 by Zhulina et al 56 using self-consistent field theory calculations. Pinned micelles are BCPs that are bound to a substrate and upon exposure to a selective solvent, the favorable block undergoes chain stretching rearrangements to shield the unfavorable block from solvent interactions.…”

Section: Block Copolymer Nanocompositesmentioning

confidence: 99%

“…The production of polymer brushes advances many fields of science and technology through the production of stimuli responsive interfaces, 79,80 improving colloidal stability, 81 and the synthesis of nanocomposites. [82][83][84] Polymer brushes are used to alter physical properties such as surface wetting and roughness, as well as to add chemical functionality.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically Ordered Montmorillonite Block Copolymer Brushes

2010

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“…The study of polymer brushes advances many fields of science and technology through the production of stimuli-responsive interfaces, 12,13 the improvement of colloidal stability, 14 and the synthesis of nanocomposites. [15][16][17] Polymer brushes are used to alter physical properties such as surface wetting and roughness as well as to add chemical functionality.…”

Section: Introductionmentioning

confidence: 99%

Influence of Graft Density on Kinetics of Surface-Initiated ATRP of Polystyrene from Montmorillonite

et al. 2009

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Here we report the kinetics of the surface-initiated atom transfer radical polymerization (ATRP) of styrene from the surface of functionalized montmorillonite clay as a function of graft density. Compared with analogous ATRP reactions with free initiator, we observe a seven-fold increase in the polymerization rate at the highest graft density, 1 chain/nm2, whereas bulk kinetics are recovered as the graft density is reduced. We hypothesize that this phenomenon is a consequence of local concentration heterogeneities that shift the ATRP equilibrium in favor of the active state and present a simple phenomenological kinetic model that accounts for our data. These findings present an important consideration relevant to the design of precisely defined molecular architectures from surfaces via surface-initiated ATRP. Disciplines Polymer Science CommentsReprinted with permission from Macromolecules 42 (2009) ReceiVed NoVember 6, 2008; ReVised Manuscript ReceiVed February 3, 2009 ABSTRACT: Here we report the kinetics of the surface-initiated atom transfer radical polymerization (ATRP) of styrene from the surface of functionalized montmorillonite clay as a function of graft density. Compared with analogous ATRP reactions with free initiator, we observe a seven-fold increase in the polymerization rate at the highest graft density, ∼1 chain/nm 2 , whereas bulk kinetics are recovered as the graft density is reduced. We hypothesize that this phenomenon is a consequence of local concentration heterogeneities that shift the ATRP equilibrium in favor of the active state and present a simple phenomenological kinetic model that accounts for our data. These findings present an important consideration relevant to the design of precisely defined molecular architectures from surfaces via surface-initiated ATRP.

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Surface Rearrangement of Diblock Copolymer Brushes—Stimuli Responsive Films

Cited by 86 publications

References 66 publications

A structural definition of polymer brushes

A structural definition of polymer brushes

Hierarchically Ordered Montmorillonite Block Copolymer Brushes

Influence of Graft Density on Kinetics of Surface-Initiated ATRP of Polystyrene from Montmorillonite

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