Corn stalk all-cellulose nanocomposites were fabricated by adding cellulose nanofiber (CNF) to a matrix of dissolved cellulose. Cellulose was prepared from corn stalk by two methods: acid-base method and direct extracting method. The extracted cellulose was dissolved by using DMAc/LiCl solvent and solvent exchange to form a cellulose matrix. CNFs were isolated from corn stalk by using a TEMPO oxidation method. The isolated CNFs and all-cellulose nanocomposites were characterized by atomic force microscopy (AFM), field emission scanning electron microscope (FE-SEM), thermogravimetry analysis (TGA), X-ray diffraction (XRD), and mechanical tensile testing. Layered structure of the corn stalk all-cellulose nanocomposites was also examined. The crystallinities of regenerated cellulose and all-cellulose nanocomposites were measured by peak separation method with pV peak shape function.
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