Article

Fuzzy ternary particle systems by surface-initiated atom transfer radical polymerization from layer-by-layer colloidal core-shell macroinitiator particles.

Department of Chemistry, University of Houston, Houston, Texas 77204, USA.
Langmuir (impact factor: 4.19). 10/2006; 22(20):8397-402. DOI:10.1021/la0601509 pp.8397-402
Source: PubMed

ABSTRACT We report the synthesis of ternary polymer particle material systems composed of (a) a spherical colloidal particle core, coated with (b) a polyelectrolyte intermediate shell, and followed by (c) a grafted polymer brush prepared by surface-initiated polymerization as the outer shell. The layer-by-layer (LbL) deposition process was utilized to create a functional intermediate shell of poly(diallyl-dimethylammonium chloride)/poly(acrylic acid) multilayers on the colloid template with the final layer containing an atom transfer radical polymerization (ATRP) macroinitiator polyelectrolyte. The intermediate core-shell architecture was analyzed with FT-IR, electrophoretic mobililty (zeta-potential) measurements, atomic force microscopy, and transmission electron microscopy (TEM) techniques. The particles were then utilized as macroinitiators for the surface-initiated ATRP grafting process for poly(methyl methacrylate) polymer brush. The polymer grafting was confirmed with thermo gravimetric analysis, FT-IR, and TEM. The polymer brush formed the outermost shell for a ternary colloidal particle system. By combining the LbL and surface-initiated ATRP methods to produce controllable multidomain core-shell architectures, interesting functional properties should be obtainable based on independent polyelectrolyte and polymer brush behavior.

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Keywords

atom transfer radical polymerization
 
atomic force microscopy
 
controllable multidomain core-shell architectures
 
functional intermediate shell
 
grafted polymer brush
 
independent polyelectrolyte
 
interesting functional properties
 
intermediate core-shell architecture
 
poly(diallyl-dimethylammonium chloride)/poly(acrylic acid)
 
polyelectrolyte intermediate shell
 
polymer brush behavior
 
polymer grafting
 
spherical colloidal particle core
 
surface-initiated ATRP grafting process
 
surface-initiated ATRP methods
 
surface-initiated polymerization
 
ternary colloidal particle system
 
ternary polymer particle material systems
 
thermo gravimetric analysis
 
transmission electron microscopy