Abstract:Cellulose is the most abundant bio-polymer. However, it does not dissolve in ordinary solvents or melt at high temperatures, which makes most cellulose poorly exploit. In this work, regenerated cellulose-graft-polylactic acid (RC-g-PLA) was prepared under heterogeneous conditions by using RC as precursor, and the process conditions of heterogeneous reaction were optimized. The obtained RC-g-PLA was characterized by FT-IR, 1H-NMR, and XRD, etc. The results show that the process condition for heterogeneous reaction is the best, when RC is washed once by lactic acid (LA), the mass fraction of catalyst is 3‰ based on the mass of LA, and the premixed time is 24 h. Then the degree of substitution of the obtained amorphous copolymer is 1.3, the average degree of polymerization of the PLA side chains is 2.55, and the copolymer can be homogeneously dissolved in DMSO.