Abstract: Gramineous plant reed was used as cellulose raw material to prepare regenerated reed plant cellulose by extracting cellulose with chemical method and adopting properties of cellulose in green solution KOH/thiourea and urea/water system, such as sol in low temperature and gel in high temperature. Optimum concentration range of reed cellulose in solution system and structure & performance change of reed before and after regeneration were emphatically studied through testing methods including super rotational rheometer, viscosity tester, scanning electron microscope, specific surface and aperture analyzer, thermal analyzer, Fourier infrared spectrum and X ray diffraction. After dissolution and regeneration of reed cellulose, it had uniform porous network structure of gel type, pore volume was distributed in 0.77-0.62 cm³·g^-1, and the average pore-size distribution was in 9.9-8.8 nm. The specific surface reached 345-320 m³·g^-1, and content range of gelatin regenerated cellulose was 3%-8%. The chemical structure of reed cellulose was the same before and after regeneration, and the crystallinity was decreased with better wet regulating performance compared with that before regeneration.

Key words: reed, cellulose, regeneration, performance