Method for preparing polylactic acid, bamboo nano-cellulose whisker and ultrafine bamboo charcoal composite material film

The invention discloses a method for preparing a polylactic acid, bamboo nano-cellulose whisker and ultrafine bamboo charcoal composite material film. The method comprises the following steps: (1) performing surface modification treatment on bamboo nano-cellulose whiskers to obtain modified bamboo nano-cellulose whiskers; (2) performing surface modification treatment on ultrafine bamboo charcoal particles to obtain modified ultrafine bamboo charcoal particles; (3) conducting a solution pouring-solvent evaporation method: adding an organic solvent into polylactic acid, heating and stirring till polylactic acid is completely dissolved, then adding the modified bamboo nano-cellulose whiskers and the modified ultrafine bamboo charcoal particles, performing dispersion treatment to obtain a blend system, pouring the blend system in a die to manufacture a film, and drying to obtain the polylactic acid, bamboo nano-cellulose whisker and ultrafine bamboo charcoal composite material film. The method provided by the inv