1. No category

Sample Name:
Name:
Poly(styrene--b-ferrocenyldimethylsilane)
Poly(styrene
1H
NMR spectrum of the sample:
sample:
Sample #: P1001910019-SFES
Structure:
1000
CH3
sec.bu
CH2
CH
b
n
Si
CH3
Fe
P10019-SFES
500
m
Solvent methanol
Composition:
0
8.0
ppm (f1)
7.0
6.0
5.0
5.82
Mw/Mn (PDI)
8.00
47.72
Mn ×103
S-b-FES
38.0-b-11.0
4.0
3.0
2.0
1.0
1.25
SEC profile of the block copolymer:
copolymer:
Synthesis Procedure:
Poly(styrene-b- ferrocenyldimethylsilane)) is
prepared by anionic living polymerization by
successive addition of styrene followed by
the addition of ferrocenyldimethylsilane
monomer.
P10019-SFES
0.3
0.2
Characterization:
An aliquot of the polystyrene block was
terminated before addition of hexamethyl
cyclotrisiloxane and analyzed by size
exclusion chromatography (SEC) to obtain
the molecular weight and polydispersity
index (PDI). The final block copolymer
composition was calculated from 1H-NMR
spectroscopy by comparing the peak area of
the styrene protons at 6.3-7.2 ppm with the
peak area of Si(CH3) at 0.2ppm.
Solubility:
Polymer is soluble in THF, CHCl3, Toluene
and precipitate out from ether and hexanes.
0.1
0.0
15
20
25
Ve (ml)
Polystyrene, Mn=38,000 Mw: 43,500 PI=1.15
Block Copolymer PS(38,000)-b-PFES(11,000), PI=1.25
Composition from FTIR/HNMR
Thermal analysis of the samples was carried
out on a TA Q100 differential scanning
calorimeter
at
a
heating
rate
of
o
10 C/min.The midpoint of the slope change
of the heat flow plot of the second heating
scan was considered as the glass transition
temperature (Tg).
Melting and crystallization curve for the
sample
The melting temperature (Tm) was taken as
the maximum of the endothermic peak
where as the crystallization temperature
(Tc) was considered as the minimum of the
exothermic peak.
Thermogram for FES block
Thermal analysis results at a glance
Tg: 106
For PS block
Tm : -
oC
T c: -
For FES block
Tm: 139oC
Tc: 104 oC
Tg: 36oC
Melting curve for PLA block:
block:
-0.1
-0.2
Heat Flow (W/g)
Thermal analysis of the sample P10019
P1001910019SFES
-0.3
-0.4
-0.38
-0.5
-0.40
Heat Flow (W/g)
-0.42
138.64°C
-0.6
120
32.89°C
125
130
Exo Up
135
140
145
150
Temperature (°C)
-0.44
35.76°C(T)
Crystallization curve:
-0.46
37.27°C
0.29
-0.48
-0.50
28
30
32
34
Exo Up
36
38
40
42
44
0.28
46
Temperature (°C)
Thermogram for PS block
H e a t F lo w (W /g )
104.10°C
-0.48
0.27
-0.50
0.26
Heat Flow (W /g)
-0.52
101.07°C
-0.54
0.25
60
Exo Up
105.62°C(T)
-0.56
-0.58
108.85°C
-0.60
90
Exo Up
95
100
105
Temperature (°C)
110
115
120
80
100
Temperature (°C)
120
140