Figure 3. (a) 1H NMR spectra of KL, HIL, and HOP powders. (b) FTIR spectra and (c) XRD patterns of PCL, KLP, HILP, and HOLP NF mats. (d) TG curves and (e) water contact angles of KLP, HILP, and HOLP NF mats. (f) Surface potential (φ ) of HILP and HOLP NF mats.