NEWS ED EVENTI

Autori: F.Cilento, A.Martone,  M. Giordano
Rivista: Nanomaterials
Anno di Pubblicazione: 2022
Volume:    1359
Pagine:    2-23
Abstract:
Achieving high mechanical performances in nanocomposites reinforced with lamellar fillers has been a great challenge in the last decade. Many efforts have been done to fabricate synthetic materials whose properties resembles those of the reinforcement. To do this, special architectures have been considered, mimicking existing materials, such as nacre. However, achieving the desired performances is challenging since the mechanical response of the material is influenced by many factors, such as the filler content, the matrix molecular mobility and the compatibility between the two phases. Most importantly, the properties of a macroscopic bulk material strongly depend on the interaction at atomic levels and on their synergetic effect. In particular, the formation of highly ordered brick and mortar structure depends on the interaction forces between the two phases. Consequently, poor mechanical performances of the material are associated to interface issues, and to the low stress transfer from the matrix to the nanoparticles. Therefore, improvement of the interface at chemical level enhances the mechanical response of the material. The purpose of this review is to give an insight into stress transfer mechanism in high filler content composites and to describe the parameters that influence the efficiency of stress transfer and the strategies to improve it.