FIGURE 7. FTIR spectra of 16%wt. Chitosan in PVC, Chitosan in PAN, PVC in PVP.

Figure 7 shows the FTIR absorption spectra of PAN powder incorporated with 16wt% chitosan powder. The FTIR spectra of this combination provide some nitrile groups, equivalent to 669 cm-1.

图7为掺入16wt%壳聚糖粉末的聚丙烯腈（Polyacrylonitrile，PAN）粉末的傅里叶变换红外（Fourier Transform Infrared Spectroscopy，FTIR）吸收光谱。该复合体系的FTIR光谱在669 cm⁻¹波数处呈现出对应腈基的特征吸收峰。