Environmental concerns have triggered the development of green composites as a replacement of non-degradable polymers. A variety of biopolymers, including polysaccharides, polyesters and proteins are reported to be used as matrices. Such biopolymers feature low mechanical and thermic properties. In order to improve the properties of these biopolymeric matrices, organic fillers derived from agroforestry wastes can be used. This paper aims to provide an up-to-date review of the development of fully green composite materials. A systematical classification based on the chemical structure of the biopolymeric matrices and the morphology of the natural reinforcements is proposed. In most cases, treatments and additives are used to prepare these green composites and overcome the problems related to poor biopolymer-filler interaction. Several applications as well as the improved mechanical, thermic and barrier properties of various green composite are also discussed.

环境问题引发了绿色复合材料的发展，以替代不可降解的聚合物。据报道，包括多糖，聚酯和蛋白质在内的多种生物聚合物均被用作基质。这种生物聚合物的机械和热性能低。为了改善这些生物聚合物基质的性能，可以使用源自农林业废弃物的有机填料。本文旨在为全绿色复合材料的发展提供最新的回顾。提出了基于生物聚合物基体的化学结构和天然增强材料形态的系统分类。在大多数情况下，使用处理剂和添加剂来制备这些绿色复合材料，并克服了与不良的生物聚合物-填料相互作用相关的问题。