| abstract |
The invention discloses a preparation method of polylactic acid grafted chitosan nanowhiskers, belonging to the technical field of materials. According to the invention, lactide, a catalyst and chitosan are uniformly mixed and then are subjected to polymerization grafting to prepare PLA-g-CS, the PLA-g-CS is dispersed in alkali liquor, and the nanowhisker is obtained by a repeated freezing/thawing method, wherein no solvent is used in the polymerization grafting process. The method enables PLA-g-CS without good solvent to be prepared into the nano crystal whisker, and the whole reaction is efficient, clean, green and environment-friendly. |