Aiming at the problems caused by the large-scale use of non-degradable plastic films, new degradable zein composite films are developed with natural fibers based on incorporating biochar. Bamboo fibers were as raw materials to prepare biochar under 500°C and alkali treated bamboo fibers under three NaOH concentrations (2%, 4%, and 6%). The results indicate that better compatibility of zein composite films was achieved due to the reduction of polarity and the increase of roughness by alkali treatment shown in the results of XRD, FTIR, SEM, and contact angles. TGA and DSC show that adding alkali treated bamboo fibers delayed the thermal decomposition rate, increased the thermal denaturation temperature, and thereby improved the thermal properties of zein. A maximum of tensile properties with 0.19 MPa tensile strength, 4.50 MPa tensile modulus, and 331.67% elongation at break was reached at the resultant composite film of 2% concentration alkali treated bamboo fibers.

针对不可降解塑料薄膜的大规模使用带来的问题，在掺入生物炭的基础上，开发了新型可降解玉米蛋白复合薄膜。以竹纤维为原料，在 500°C 下制备生物炭，并在三种 NaOH 浓度（2%、4% 和 6%）下制备碱处理竹纤维。结果表明，XRD、FTIR、SEM和接触角的结果表明，由于碱处理降低了极性并增加了粗糙度，玉米蛋白复合膜的相容性得到了改善。TGA和DSC表明，加入碱处理的竹纤维延缓了热分解速率，提高了热变性温度，从而改善了玉米醇溶蛋白的热性能。拉伸性能的最大值为 0.19 MPa 拉伸强度，4.50 MPa 拉伸模量，