Download Sample Name: Poly(styrene-co-4-styrene sulfonic acid) sodium salt

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Sample Name: Poly(styrene-co-4-styrene sulfonic
acid) sodium salt form
SEC of Homopolymer:
P3011-S
(Precursor of P3016-5-SSO3H/Na)
Sample #: P3016-5-SSO3H
Structure:
CH2
CH
co
CH2
CH
SO3- M+
M=H
Composition:
Mn x 103
Mole% of
SO3H
PDI
20.5
38.3
1.03
0
12
14
16
18
20
22
24
26
28
Ve (ml)
Synthesis Procedure:
Poly(styrene-co-4-styrene sulfonic acid) is synthesized
by partially sulfonation of monodispersed polystyrene
and the reaction scheme is shown below.
n
sec-BuLi
n
H2SO4
Ac2O
n
co
n
m
co
m
NaOH/THF/Methanol
SO3Na
SO3H
Characterization:
The molecular weight and polydispersity index (PDI) of
parent polymer are obtained by size exclusion
chromatography.
The degree of sulfonation is
determined by element analysis or titration.
Solubility:
Poly(styrene-co-4-styrene sulfonic acid) is soluble in
DMF, chloroform, dichloroethane or alcohols
dependent on its chemical composition. It precipitates
hexanes.
Size exclusion chromatograph of polystyrene:
Mn=14800 Mw=15300, PI=1.03
Sulfonation Degree: 38.3mol%, Mn=20500, Mw=21200, PI=1.043
after conversion to sodium salt: Mn:21500
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