Figure 4.

(A) Photographs of zeolite-A/chitosan hybrid composites. (B) Photograph exhibiting the transparency (up left) and flexibility (left down) of the zeolite-A/chitosan hybrid film and SEM image of the cross-section of the film (right). (C) The internal architecture of the pure chitosan scaffold with diverse magnifications. The internal microstructure of zeolite-A/chitosan hybrid composites with diverse zeolite percentages of 20 wt.% (D), 35 wt.% (E), 45 wt.% (F) and 55 wt.% (G). (H) The pore size distribution diagram of the pure chitosan scaffold and zeolite-A/chitosan hybrid composites with diverse zeolite percentages. Reprinted from Yu L, Gong J, Zeng C, et al. Preparation of zeolite-A/chitosan hybrid composites and their bioactivities and antimicrobial activities. Mater Sci Eng C. 2013;33(7):3652–3660. Copyright 2013, with permission from Elsevier.⁴⁶