fig3
Figure 3. Morphological characterization and evolution of chemical structure of PCNF/CS-M films. (A) FTIR spectra of PCNF, PCNF/CS5 and PCNF/CS5-M2.5 films. (B) C1s XPS spectra of PCNF/CS5-M2.5 films. (C) SEM images of cross-sectional morphology: (i) PCNF; (ii) PCNF/CS5-M2.5 films. For PCNF/CS5-M2.5, the rough fracture architecture with river-like grooves indicates improved interactions in the matrix. (D) SEM images of PCNF/CS-M film after simple stretching. (E) Proposed synergistic reinforcement mechanism of PCNF/CS-M films.
