Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification.
Macromolecules
; 50(21): 8670-8677, 2017 Nov 14.
Article
in En
| MEDLINE
| ID: mdl-29503464
ABSTRACT
We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using post-polymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial crosslinking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ellipsometry and the through-thickness composition profile via time-of-flight secondary ion mass spectroscopy (ToF-SIMS) provided keys insight into parameters influencing the buckling behavior.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Macromolecules
Year:
2017
Document type:
Article