| Abstract:This study analyzed the effects of deep prehydrolysis and cellulase treatments on the performance of bamboo dissolving pulp. The results have shown that extending the time of prehydrolysis treatment decreased the hemicellulose content while improved the Fock reactivity. However, the overlong prehydrolysis treatment leaded to the low content of α-cellulose in the bamboo dissolving pulp. Cellulase treatment cut the cellulose molecular chain and "etched and thus modified the fiber morphology and micro-nano structure. As a result, cellulase treatment reduced the degree of polymerization and α-cellulose content and enhanced the Fock reactivity. With prehydrolysis (185 min), cooking and bleaching and 0.25 mg/g cellulase treatments, the degree of polymerization of deep prehydrolysis-sulfate bamboo dissolving pulp is 442, the α-cellulose content is 92%, and the Fock reactivity is 75%. |