Tunning the Elastic Properties of Wrinkled Janus Particles

Maria Helena Figueiredo Godinho

doi:10.1557/opl.2012.1617

Tunning the Elastic Properties of Wrinkled Janus Particles

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The main objective of this work was to control and manipulate tuneable equilibrium structures in elastomeric spherical particles. The cross-linked urethane/urea polymeric spheres with two soft segments, polypropylene oxide and polybutadiene, were prepared by reacting a poly(propyleneoxide)-based triisocyanate-terminated prepolymer (PU) with poly(butadienediol) (PBDO), with different weight ratio. Wrinkling on elastomeric Janus spheres is induced by UV irradiation and permanently imprinted by swelling the particles in an appropriate solvent, followed by drying. The surface tailoring of the Janus elastomeric spheres, found by SEM, is dependent on the PU/PBDO ratio and on the elastic properties of the particles.

Original language	Unknown
Title of host publication	MRS Online Proceedings Library
Pages	-
DOIs	https://doi.org/10.1557/opl.2012.1617
Publication status	Published - 1 Jan 2012
Event	XXI International Materials Research Congress - Duration: 1 Jan 2012 → …

Conference

Conference	XXI International Materials Research Congress
Period	1/01/12 → …

Access to Document

10.1557/opl.2012.1617

Cite this

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title = "Tunning the Elastic Properties of Wrinkled Janus Particles",

abstract = "The main objective of this work was to control and manipulate tuneable equilibrium structures in elastomeric spherical particles. The cross-linked urethane/urea polymeric spheres with two soft segments, polypropylene oxide and polybutadiene, were prepared by reacting a poly(propyleneoxide)-based triisocyanate-terminated prepolymer (PU) with poly(butadienediol) (PBDO), with different weight ratio. Wrinkling on elastomeric Janus spheres is induced by UV irradiation and permanently imprinted by swelling the particles in an appropriate solvent, followed by drying. The surface tailoring of the Janus elastomeric spheres, found by SEM, is dependent on the PU/PBDO ratio and on the elastic properties of the particles.",

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AB - The main objective of this work was to control and manipulate tuneable equilibrium structures in elastomeric spherical particles. The cross-linked urethane/urea polymeric spheres with two soft segments, polypropylene oxide and polybutadiene, were prepared by reacting a poly(propyleneoxide)-based triisocyanate-terminated prepolymer (PU) with poly(butadienediol) (PBDO), with different weight ratio. Wrinkling on elastomeric Janus spheres is induced by UV irradiation and permanently imprinted by swelling the particles in an appropriate solvent, followed by drying. The surface tailoring of the Janus elastomeric spheres, found by SEM, is dependent on the PU/PBDO ratio and on the elastic properties of the particles.

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