TY - JOUR
T1 - The influence of pendant carboxylic acid loading on surfaces of statistical poly(4-hydroxystyrene)-co-styrene)s
AU - Daugaard, Anders Egede
AU - Hvilsted, Søren
PY - 2008
Y1 - 2008
N2 - Copolymers 9f 4-tert-butoxystyrene (tB5) and styrene (5) have been prepared by free radical
copolymerization and the copolymer ratios of TtBS == 0.97 and Ts == 1.12 have been determined
by the Kelen-Tiidos method. After deprotection to 4-hydroxystyrene, alkynes were introduced
by a Williamson ether synthesis with propargyl bromide and the copolymers were functionalized
with pendant aliphatic or aromatic carboxylic acids by click chemistry. Differential
scanning calorimetry of the copolymers demonstrates the large influence on Tg ofthe different
functional groups and the backbone
composition. In particular, aliphatic
and aromatic pendant groups differ by
92°C in Tg• Contact angle measurements
onspin coated films have shown a maximum
effect of the functional groups in
the advancing contact angle at a 75/100
copolymer loading. In addition to this,
X-ray photoelectron spectroscopy shows
the presence of acid groups on the surface.
AB - Copolymers 9f 4-tert-butoxystyrene (tB5) and styrene (5) have been prepared by free radical
copolymerization and the copolymer ratios of TtBS == 0.97 and Ts == 1.12 have been determined
by the Kelen-Tiidos method. After deprotection to 4-hydroxystyrene, alkynes were introduced
by a Williamson ether synthesis with propargyl bromide and the copolymers were functionalized
with pendant aliphatic or aromatic carboxylic acids by click chemistry. Differential
scanning calorimetry of the copolymers demonstrates the large influence on Tg ofthe different
functional groups and the backbone
composition. In particular, aliphatic
and aromatic pendant groups differ by
92°C in Tg• Contact angle measurements
onspin coated films have shown a maximum
effect of the functional groups in
the advancing contact angle at a 75/100
copolymer loading. In addition to this,
X-ray photoelectron spectroscopy shows
the presence of acid groups on the surface.
U2 - 10.1002/marc.200800113
DO - 10.1002/marc.200800113
M3 - Journal article
VL - 29
SP - 1119
EP - 1125
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
SN - 1022-1336
IS - 12
ER -