METHOD FOR PRODUCING CHITIN NANOFIBERS, COMPOSITE MATERIAL AND COATING COMPOSITION EACH CONTAINING CHITIN NANOFIBERS, AND METHOD FOR PRODUCING CHITOSAN NANOFIBERS, COMPOSITE MATERIAL AND COATING COMPOSITION EACH CONTAINING CHITOSAN NANOFIBERS

摘要

The present invention provides a method for producing chitin nanofibers, which includes the steps of deproteinizing a material derived from a chitin-containing organism by an alkali treatment, deashing a deproteinized integument by an acid treatment, optionally treating the deashed integument under acidic conditions, and then subjecting to a fiber-loosening treatment. The present invention also provides chitin nanofibers obtained by the method, and a composite material and a coating composition each containing the same. The present invention provides a method for producing chitosan nanofibers, which includes, in addition to the above steps, a deacetylation step and chitosan nanofibers obtained by the method, and a composite material and a coating composition each containing the same.