木棉纤维对羧甲基壳聚糖海绵的结构与性能影响OA

To investigate the modulation mechanism of kapok fiber filling on the porous structure,mechanical properties and water absorption properties of carboxymethyl chitosan sponge(CMVA),carboxymethyl chitosan sponges with different fiber contents were prepared.The chemical inter-actions were analyzed by Fourier transform infrared spectroscopy(FT-IR),SEM was used to char-acterize the microstructure,and the mechanical properties and water absorption behaviors were evaluated by compression test and water absorption test.The results show that the kapok fibers might undergo esterification reaction with carboxymethyl chitosan.The incorporation of hollow wood wool fibers connects the pores of the sponge to form a complex porous structure.The in-corporation of fibers is effective in bearing loads,and the sponges with 0.3％mass fraction of ka-pok fibers significantly increase the compressive strength of the sponge,reduce the plastic deforma-tion region,and enhance its shape recovery and water absorption properties.The innovative use of fiber-sponge reinforcement in this study provides an important theoretical basis for the devel-opment of high-performance carboxymethyl chitosan sponges,which have a broad application pro-spect.