Functional group

Peak assignment

Wavenumber Cm⁻¹

PSF

C-C

C=C

C-O-C

R-SO₂

1100

1800

1180

1300

PVA

C-C

O-H

C-H

1100

3590

3125

Hydrogels

C-C

R-SO₂

C=C

C-H

1100

1300

1800

3125