Polyimide Aerogels Cross-Linked with Aminated Ag Nanowires: Mechanically Strong and Tough

Polyimide Aerogels Cross-Linked with Aminated Ag Nanowires: Mechanically Strong and Tough

In this study, polyimide (PI)/Ag nanowire (AgNW) nanocomposite aerogels with extremely high mechanical performance have been fabricated utilizing amine-modified AgNWs as mechanical nanoreinforcement particulates and crosslinking agents. Initially, AgNWs were fabricated and surface modified by p-aminothiophenol (PATP), then the aminated AgNWs were dispersed into polyamide acid solution and aerog...

Mechanically Tough Pluronic F127/Laponite Nanocomposite Hydrogels from Covalently and Physically Cross-Linked Networks

Three-dimensional core-shell superstructures: mechanically strong aerogels.

Nanocasting conformal polymer coatings on preformed three-dimensional assemblies of nanoparticles, macroscopically classified as aerogels, reinforces the interparticle necks and increases the strength of the bulk material dramatically. For example, specific compressive strengths are reported to be higher than those for mild steel and aluminum, while the ability to store energy may surpass that ...

Tough and strong bioinspired nanocomposites with interfacial cross-links.

Strength and toughness are two mechanical properties that are generally mutually exclusive but highly sought-after in the design of advanced composite materials. There has only been limited progress in achieving both high strength and toughness in composite materials. However, the fundamental underlying mechanics remain largely unexplored, especially at the nanoscale. Inspired by the lamellar s...

Stiff, strong, and tough hydrogels with good chemical stability

Recent developments in the area of hydrogels promise to greatly expand their scope of applications. Many applications require hydrogels to endure signicant mechanical loads in aggressive environments. Examples range from biomedical applications such as articial cartilage in tissue engineering, to engineering applications such as swellable packers in the oil industry, or articial nerves and m...