To deepen the comprehensive utilization of Cattail leaves and improve their added value,the holocellulose nanofibers of Cattail leaves were prepared by using hydrogen peroxide-acetic acid(HPAA)treatment and acid hydrolysis.The physicochemical properties and structures of the holocellulose fibers prepared by HPAA treatment,nanofibers treated by acid hydrolysis separation,and original Cattail leaves samples were analyzed and compared.The results showed that the residual lignin mass fraction in holocellulose fibers was 1.32%,with individual fiber fully exposed.Due to the removal of lignin and other small molecules,the crystallinity increased to 57.47%,and the thermal stability was higher than that of the original samples.The prepared nanofibers exhibited a slender shape with functionalized carboxyl groups on the molecular chain,resulting in good thermal stability.
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