ABSTRACT

Growing environmental concerns have made more people aware of waste utilization and management. Agro-waste is becoming to be one of the main contributors to the environmental issue. From a circular economy perspective, the agro-waste, such as natural fibers (NFs) as well as natural particulates (NPs) found in various parts of the crop, can be utilized for the development of new materials. In particular, the main problem of utilizing these wastes for blending into the polymer matrix is their hydrophilicity. which results in “low mechanical properties of the” composite. To enable the NFs and NPs to be adhered to the matrix, they have to be treated, whether chemically or physically. Treatments that focus on increasing the hydrophobicity can result in significant enhancement in the adhesion of the NF and NP with the matrix. the focus of the current work is primarily on the modulation of the mechanical properties of the polymer-based composite material arising from treatment to the surfaces of the NF and NP. This review covers the physical properties of several important NFs and NPs, the different types of chemical treatments available; the processing of the NF and NP reinforced thermoplastic composites, and the mechanical properties of the composite materials.

摘要

日益增长的环境问题使更多的人意识到废物的利用和管理。农业废弃物正在成为环境问题的主要贡献者之一。从循环经济的角度来看，农业废弃物，如在作物各个部位发现的天然纤维 (NFs) 和天然颗粒物 (NPs)，可用于开发新材料。特别是，利用这些废物混入聚合物基质的主要问题是它们的亲水性。这导致复合材料的“低机械性能”。为了使 NF 和 NP 能够粘附到基质上，必须对它们进行化学或物理处理。专注于增加疏水性的处理可以显着增强 NF 和 NP 与基质的粘附性。目前工作的重点主要是调节聚合物基复合材料的机械性能，这些材料是由对 NF 和 NP 表面的处理产生的。这篇综述涵盖了几种重要的 NF 和 NP 的物理特性，以及可用的不同类型的化学处理；NF和NP增强热塑性复合材料的加工，以及复合材料的力学性能。