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Stratified Polymer Grafts: Synthesis and Characterization of Layered ‘Brush’ and ‘Gel’ Structures
Author(s) -
Li Ang,
Ramakrishna Shivaprakash N.,
Nalam Prathima C.,
Benetti Edmondo M.,
Spencer Nicholas D.
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201300007
Subject(s) - brush , materials science , characterization (materials science) , polymer , polymer brush , polymerization , layer (electronics) , colloid , chemical engineering , nanotechnology , tribology , composite material , polymer chemistry , engineering
Stratified polyacrylamide films featuring polymer‐brush and polymer‐gel blocks are fabricated by sequential, surface‐initiated, photoiniferter‐mediated polymerization. Use of selective solvent mixtures during re‐initiation allows the formation of well‐defined brush and gel layers with graded properties. Nano‐mechanical and tribological characterization by colloidal‐probe AFM clarifies the architecture of each layer and determines the film properties under application of normal and lateral forces.