中文摘要：

采用酸碱处理竹原纤维并辅以超声分散制备纳米微晶纤维素（NCC）,采用溶液浇铸/水分挥发的成型方法制备了纳米微晶纤维素增强羟丙基纤维素（HPC）全纤维素纳米复合膜.研究了NCC/HPC复合膜的力学性能、透光度以及热稳定性.随着纳米微晶纤维素含量的增加,复合膜的拉伸强度、拉伸模量、储能模量和热稳定性逐渐增大,与纯羟丙基纤维素膜相比,当纳米微晶纤维素质量分数为60％时,纳米复合膜的拉伸强度提高了8.5倍,拉伸模量提高了3.9倍,储能模量提高了3.7倍,而NCC/HPC复合膜的透光度没有出现明显的下降.

英文摘要：

Nanocrystalline cellulose （NCC） was obtained by using acid hydrolysis of bamboo fiber with the aid of ultrasonication. Fully cellulose-based nanocomposite membranes were prepared by incorporation of NCC into the hydroxyproxypropyl cellulose （HPC） matrix using a casting/evaporation technique. The mechanical properties, transparent performance, and thermal stability of the NCC/HPC membrane were studied. With the NCC content increased, the modulus and the tensile strength of the membranes increased gradually. At the content of 60%（wt） NCC, compared with the pure HPC membrane, the tensile strength of the composite membrane increased by 8.5 times, the modulus increased by 3.9 times and the storage modulus increased by 3.7 times. Moreover, the transparency of NCC/HPC membranes did not decline significantly.