69 / 2021-06-07 14:43:40

Effect of micro/nano structure formed between hemicellulose and nano/micro-fibrils on properties of cellulose films

Bagasse; Nano/micro-fibrils; Hemicellulose; High pliability; High consistency refiner

In this paper, nano/micro-fibrils were applied to enhance the mechanical properties and hydrophobic of the sugarcane bagasse fiber films. The successful preparation of nano/micro-fibrils was confirmed by scanning electron microscope (SEM), X-ray diffraction (XRD), and ion chromatography (IC). The morphology, mechanical and hydrophobic properties of the cellulose films was evaluated. The results show that the nanoparticle was formed by the hemicellulose diffusing on the surface of the cellulose and agglomerating in the film forming process at 40℃. The elastic modulus of cellulose film was as high as 4140.6 MPa, and the water contact angle was increased to 113°. The micro-nano structures were formed due to hemicellulose adsorption on nano/microfilament surfaces. The hydrophobicity of the films was improved. The directional crystallization of nano/microfibrous molecules was found. The cellulose films with high elastic modulus and high elasticity were obtained. It provides theoretical support for the preparation of high performance cellulose film.