samples |
C-S in-plane stretching vibration |
-SO-stretching vibration |
-SO2-
stretching vibration |
-SO2- stretching vibration |
-SO3H Stretching vibration |
PPS |
1092 |
- |
- |
- |
- |
1#
|
1092
|
-
|
1163
(Weaker)
|
-
|
-
|
2#
|
1090
|
1038
(Weak)
|
1157
(Strong)
|
1321
(Weak)
|
646
(Strong)
|
3#
|
1090
|
1036 (Strong)
|
1157
(Strong)
|
1321
(Weak)
|
646
(Strong)
|
4#
|
1090
|
1036 (Strong)
|
1157
(Strong)
|
1319
(Weak)
|
646
(Strong)
|
5#
|
1090
|
1036 (Stronger)
|
1159
(Strong)
|
1319
(Weak)
|
642
(Stronger)
|