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Tuesday, 21 May 2019

Grafted Polymers and Nanostructures on Surfaces

Monday, 29 November 2010 | Posted by: Prof. Rigoberto Advincula, Case Western Reserve University

Smart coatings can be achieved by fine tuning nanostructures in ultrathin films.The use of grafted polymers and particles on surfaces enable the modification and formation of robust coatings which can lead to very interesting stimuli-responsive properties. Polymer brush formation can involve surface initiated polymerization (SIP) or by grafting preformed polymers (but with low density). Another method can involve the application of colloidal particles to form uniform layers on surfaces or the application of lithographic and non-lithographic methods (can be expensive).

The possible applications include self-cleaning coatings, anti-corrosion coatings, non-stick coatings, and non-fouling biosurfaces. The technology may involve the preparation of high density grafted polymers, mixed brushes, or block copolymers. On the other hand, the preparation of controlled morphologies via templating with colloidal particles involves the use of slow and controlled deposition techniques. Stimuli-response with solvent, pH, and temperature can be achieved based on composition, thickness, and morphology. Controlled wetting can also be achieved by tuning the surface energy and roughness of films. Characterization is typically done with contact angle measurements, XPS, AFM, SEM, impedance analysis, and other surface sensitive analytical methods. See more at

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