Characterizing Wool Keratin

Figure 2

Infrared spectra (a) and (b) Samples 1–4, relative absorptions for amide and sulfoxide regions, respectively; (c) and (d) wool keratin pulverized fiber, 1700–1400 cm⁻¹ and 1400–1000 cm⁻¹ regions, respectively; (e) and (f) Sample 4, 1700–1400 cm⁻¹ and 1400–1000 cm⁻¹ regions, respectively.

(a)

(b)

(c)

(d)

(e)

(f)