Light-stimulated Permanent Shape Reconfiguration in Crosslinked Polymer Microparticles

Published: April 07, 2017


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


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


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