Tailoring structure formation and mechanical properties of particle brush solids via homopolymer addition

Faraday Discussions
Michael SchmittMichael R Bockstaller

Abstract

Recent progress in the area of surface-initiated controlled radical polymerization (SI-CRP) has enabled the synthesis of polymer-grafted colloids with precise control over the architecture of grafted chains. The resulting 'particle brush materials' are of interest both from a fundamental as well as applied perspective because structural frustrations (associated with the tethering of chains to a curved surface) imply a sensitive dependence of the interactions between brush particles on the architecture of surface-tethered chains that offers new opportunities to design hybrid materials with novel functionalities. An important prerequisite for establishing structure-property relations in particle brush materials is to understand the role of homopolymer impurities that form, for example, by thermal self-initiation. This contribution presents a detailed discussion of the role of homopolymer additives on the structure and mechanical properties of particle brush materials. The results suggest that the dissolution of homopolymer fillers follows a two-step mechanism comprised of the initial segregation of homopolymer to the interstitial regions within the array and the subsequent swelling of the particle brush (depending on the respecti...Continue Reading

References

Nov 23, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·I Borukhov, L Leibler
Dec 26, 2001·Chemical Reviews·K Matyjaszewski, J Xia
Aug 11, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Satyajeet OjhaMichael R Bockstaller
Aug 24, 2010·Journal of the American Chemical Society·Jihoon ChoiMichael R Bockstaller
Jul 1, 2009·Nature Chemistry·Krzysztof Matyjaszewski, Nicolay V Tsarevsky
Jun 22, 2011·ACS Nano·Panayiotis VoudourisGeorge Fytas
May 15, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Jihoon ChoiMichael R Bockstaller
Jun 22, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Satyajeet OjhaMichael R Bockstaller
Apr 25, 2014·Journal of the American Chemical Society·Krzysztof Matyjaszewski, Nicolay V Tsarevsky
Nov 5, 2014·ACS Applied Materials & Interfaces·Christopher A GrabowskiRichard A Vaia

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