Bacterial cellulose (BC) nanofibers, with and without silane surface modification, were incorporated into self-reinforced poly(lactic acid) (SR-PLA) nanocomposites at 1 and 10 wt%. Disintegrated BC was combined with electrospun PLA fiber mats by film stacking and compression molding at 165 °C for 40 sec to obtain SR-PLA/BC hybrid films. The effect of nanocellulose addition and its surface modification on the structure, morphology, and properties of the resulting composites were investigated. It was found that BC was a highly effective reinforcement for SR-PLA nanocomposites, providing a noticeable increase in the film’s strength and modulus. Moreover, surface modification of BC was shown to further enhance the film performances due to an improved PLA/BC interfacial interaction. At an optimum BC content, these hybrid films also exhibited outstanding ductility and toughness. Water vapor barrier properties were also enhanced, especially when modified BC was integrated in the SR-PLA films.

将具有和不具有硅烷表面改性的细菌纤维素（BC）纳米纤维以1 wt％和10 wt％的比例掺入自增强聚乳酸（SR-PLA）纳米复合材料中。通过膜堆叠和在165°C下压缩成型40秒钟，将崩解的BC与电纺PLA纤维毡结合起来，以获得SR-PLA / BC杂化膜。研究了纳米纤维素的添加及其表面改性对所得复合材料的结构，形态和性能的影响。发现BC是SR-PLA纳米复合材料的高效增强剂，可显着提高薄膜的强度和模量。此外，由于改进的PLA / BC界面相互作用，对BC的表面改性显示出可进一步提高薄膜性能。在最佳BC含量下，这些杂化膜还表现出出色的延展性和韧性。水蒸气阻隔性能也得到了增强，尤其是当将改​​性的BC掺入SR-PLA膜中时。