Journal
POLYMER
Volume 55, Issue 23, Pages 5880-5884Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2014.08.001
Keywords
Shape memory polymers; Click chemistry; Azide
Categories
Funding
- National Science Foundation (NSF) [DMR 1310528]
- National Institute of Health (NIH) [U01 DE023774]
- National Science Foundation Graduate Research Fellowship (NSF GRFP)
- Department of Education Graduate Assistance in the Areas of National Need (GAANN)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1310528] Funding Source: National Science Foundation
Ask authors/readers for more resources
The formation of polymer networks polymerized with the Copper (I) - catalyzed azide - alkyne cycloaddition (CuAAC) click reaction is described along with their accompanying utilization as shape memory polymers. Due to the click nature of the reaction and the synthetic accessibility of azide and alkyne functional-monomers, the polymer architecture was readily controlled through monomer design to manipulate crosslink density, ability for further functionalization, and the glass transition temperature (55-114 degrees C). Free strain recovery is used to quantify the shape memory properties of a model CuAAC network resulting in excellent shape fixity and recovery of 99%. The step growth nature of this polymerization results in homogenous network formation with narrow glass transitions ranges having half widths of the transition close to 15 degrees C for these materials resulting in shape recovery sharpness of 3.9%/degrees C in a model system comparable to similarly crosslinked chain growth polymers. Utilization of the CuAAC reaction to form shape memory materials opens a range of possibilities and behaviors that are not readily achieved in other shape memory materials such as (meth) acrylates, thiol-ene, thiol-Michael, and poly(caprolactone) based shape memory materials. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available