
Update on Application of Response Surface Methodology-Part I 131
HBP are observed in the fingerprint region between 1,800 and 900 cm
–1
. The absorp-
tion bands in FTIR spectra are assigned according to literature [38]. The FTIR spectra
of the AB
2
type monomer and the HBP are given in Figure 6. The FTIR spectra of both
monomer and polymer show the peak position at 3,300 cm
1
due to N–H stretching
vibration. AB
2
type monomer had absorption band at around 1,463 cm
–1
(bending vi-
bration of CH
2
) and bands between 1,000 and 1,400 cm
–1
. The peaks can be observed
at 1,735 cm
–1
corresponding to C=O stretching vibration of esters.
The FTIR spectrum of HBP ...