Light-stimulated Permanent Shape Reconfiguration in Crosslinked Polymer Microparticles

Published: April 07, 2017

Author(s)

Lewis M. Cox, Xiaohao Sun, Chen Wang, Nancy Sowan, Jason P. Killgore, Rong Long, Hengan Wu, Christopher N. Bowman, Yifu Ding

Abstract

Covalent adaptable networks (CANs) are cross-linked polymer networks capable reconfiguring their network topology, enabling stress relaxation and shape changing behaviors. Reversible addition-fragmentation chain transfer (RAFT) is one specific mechanism by covalent bonds may be broken and reformed in a polymer network and has demonstrated the ability to generate sub- micron surface patterns on bulk CAN films. While stress relaxation behavior has been studied in bulk materials and film surfaces, here we characterize the ability of RAFT-based CAN microspheres to deform and fix non-spherical geometries. We provide the first demonstration of rubbery microspheres exhibiting a permanent change in their overall shape as well as their surface topography.
Citation: Advanced Materials
Pub Type: Journals

Keywords

Smart Particles, Shape Reconfiguration, Covalent Adaptive Network, Photoplasticity
Created April 07, 2017, Updated September 17, 2018