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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/37012
Record Status
Checked
Record Id
37012
Title
The pH-induced swelling and collapse atom transfer radical polymerization
Contributors
M Geoghegan
,
L Ruiz-Perez
,
CC Dang
,
AJ Parnell
,
SJ Martin
,
JR Howse
,
RAL Jones
,
R Golestanian
,
PD Topham
,
CJ Crook
,
AJ Ryan
,
DS Sivia
,
JRP Webster
,
A Menelle
Abstract
We have used neutron reflectometry to characterize the swelling behaviour of brushes of poly[2-(diethyl amino)ethyl metbacrylate], a polybase, as a function of pH. The brushes, synthesized by the "grafting from" method of atom transfer radical polymerization, were observed to approximately double their thickness in low pH solutions, although the pK(a) is shifted to a lower pH than in dilute solution. The composition-depth profile obtained from the reflectometry experiments for the swollen brushes reveals a region depleted in polymer between the substrate and the extended part of the brush.
Organisation
CCLRC
,
ISIS
Keywords
POLYELECTROLYTE BRUSHES
,
CONTROLLED GROWTH
,
SILICON SURFACES
,
DENSITY PROFILES
,
WATER
,
HOMOPOLYMERS
,
COPOLYMERS
,
INTERFACE
,
POLYMERS
,
CHAINS
,
ISIS 2007
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Soft Matter
2 (2006): 1076-1080.
doi:10.1039/b611847j
2006
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