Polylactic Acid Grafted Cellulose Nanofiber and Manufacturing Method Thereof

摘要

Provided are polylactic acid grafted cellulose nanofibers suitable as a molding material and a method for producing the same. The present invention includes a grafted cellulose having a graft chain bonded to cellulose constituting the cellulose nanofiber, wherein the graft chain is polylactic acid, and C of polylactic acid to absorbance derived from OH of cellulose in an infrared absorption spectrum. It is a polylactic acid grafted cellulose nanofiber whose ratio of absorbance derived from = O is 0.01 or more and 1000 or less. Moreover, this invention is polylactic acid grafted cellulose nano provided with the process of graft-polymerizing lactide to the cellulose which comprises a cellulose nanofiber in presence of an organic polymerization catalyst which consists of amines and the salt obtained by making these amines and acids react. It is a manufacturing method of a fiber. As the organic polymerization catalyst, 4-dimethylaminopyridine and 4-dimethylaminopyridinium triflate are preferable.