In recent years, most of the scientific research had focused on developing environment-friendly biodegradable materials after being used. There are two ways to do that: the first consists of the use of biodegradable plastics, and the second is the incorporation of biodegradable fibers in polymers. The main objective of this paper is to develop eco-friendly biodegradable biocomposites and to make their characterization. We devoted significant attention to investigate the use of alfa fiber as reinforcement in Poly (hydroxybutyrate-Co-valerate) (PHBV) material. The effects of fiber content and fiber treatment, as well as the biodegradation behavior of elaborated composites, have been investigated. From the main results, we observed some morphological changes that occurred on the fiber surface after chemical treatment. The use of fibers in PHBV increases the modulus but not necessarily improves the tensile strength of resulting composites but remains dependent on the interfacial adhesion. Alkali treatment of alfa fibers leads to improve the tensile strength and the rigidity of PHBV/alfa composites. SEM micrographs highlighted differences in microstructure of untreated and treated composites indicating that fiber-treatment also enhances the quality of the interface between the thermoplastic matrix and alfa fibers. In terms of degradability characteristics, the treated composites were highly biodegradable compared to both neat PHBV and untreated composites when subjected to water absorption in distilled and seawater. Also, elaborated composites undergo significant degradation into seawater, indicating their environmentally friendly character.

近年来，大多数科学研究都集中在开发使用后对环境友好的可生物降解材料。有两种方法：第一种是使用可生物降解的塑料，第二种是将可生物降解的纤维掺入聚合物中。本文的主要目的是开发生态友好的可生物降解的生物复合材料并对其进行表征。我们投入了大量精力来研究使用阿尔法纤维作为聚（羟基丁酸酯-共-戊酸酯）（PHBV）材料中的增强材料。研究了纤维含量和纤维处理的影响，以及精细复合材料的生物降解行为。从主要结果，我们观察到化学处理后纤维表面发生了一些形态变化。在PHBV中使用纤维可提高模量，但不一定会提高所得复合材料的拉伸强度，但仍取决于界面粘合力。碱处理阿尔法纤维可提高PHBV /阿尔法复合材料的拉伸强度和刚度。SEM显微照片突出显示了未处理和已处理复合材料的微观结构差异，表明纤维处理还提高了热塑性基质和阿尔法纤维之间的界面质量。就可降解特性而言，与纯PHBV和未经处理的复合材料相比，经处理的复合材料在蒸馏水和海水中吸水时具有很高的生物降解性。而且，精制的复合材料会大量降解为海水，这表明它们具有环保特性。