Multifunctional bioplastics have been prepared by amorphous reassembly of cellulose, hemicelluloses (xylan), and hydrolyzed lignin. For this, the biopolymers were dissolved in a trifluoroacetic acid-trifluoroacetic anhydride mixture and blended in different percentages, simulating those found in natural woods. Free-standing and flexible films were obtained after the complete evaporation of the solvents. By varying xylan and hydrolyzed lignin contents, the physical properties were easily tuned. In particular, higher proportions of hydrolyzed lignin improved hydrodynamics, oxygen barrier, grease resistance, antioxidant, and antibacterial properties, whereas a higher xylan content was related to more ductile mechanical behavior, comparable to synthetic and bio-based polymers commonly used for packaging applications. In addition, these bioplastics showed high biodegradation rates in seawater. Such new polymeric materials are presented as alternatives to common man-made petroleum-based plastics used for food packaging.

中文翻译：

---

受木材成分启发的多功能生物塑料：水解木素加到木聚糖纤维素基质中的作用。

多功能生物塑料已经通过纤维素，半纤维素（木聚糖）和水解木质素的无定形重组而制备。为此，将生物聚合物溶解在三氟乙酸-三氟乙酸酐混合物中，并以不同百分比混合，以模拟天然木材中发现的那些百分比。溶剂完全蒸发后，获得了自支撑的柔性膜。通过改变木聚糖和水解木质素含量，可以轻松调节物理性能。特别是，较高比例的水解木质素可改善流体力学，氧气阻隔性，抗油脂性，抗氧化剂和抗菌性能，而较高的木聚糖含量则与更易延展的机械性能有关，与通常用于包装用途的合成和生物基聚合物相当。此外，这些生物塑料在海水中显示出很高的生物降解率。提出了这种新的聚合物材料，作为食品包装中常用的人造石油基塑料的替代品。