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Tuning structural forces between silica surfaces by temperature-induced micellization of responsive block copolymers
YKI – Ytkemiska institutet.
2010 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 12, no 36, 10730-10735 p.Article in journal (Refereed)
Abstract [en]

The aim of this study is to demonstrate a method to control interactions between two surfaces by the use of a responsive solution. This was done by performing AFM-based force measurements between two silica surfaces immersed in an aqueous solution of thermo-responsive Pluronics P85 block copolymers. For this system we demonstrate that one can switch between a situation where no long-range forces are acting between the surfaces to a situation where a long-range structural force, oscillating between attractive and repulsive force regimes, is controlling the surface interaction. This shift in behavior is caused by a long-range order introduced by temperature-induced micellization of the block copolymers and is thus simply achieved by changing the temperature from below to above the micellization temperature. We propose that the use of micelle-forming responsive block copolymers is a general method for reversibly controlling surface interactions by a temperature switch. Since the force control is achieved by changes occurring in bulk solution, the nature of the surfaces is expected to play only a relative minor role.

Place, publisher, year, edition, pages
2010. Vol. 12, no 36, 10730-10735 p.
Keyword [en]
Tuning structural forces between silica surfaces by temperature-induced micellization of responsive block copolymers
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27384OAI: oai:DiVA.org:ri-27384DiVA: diva2:1054388
Note
A2072Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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