Waste-Free Closed-Loop-Recyclable and Thermally Superinsulating Polyimide Aerogels Utilizing Diels-Alder Chemistry.

ABSTRACT: Organic aerogels are an advanced class of lightweight materials with ultralow thermal conductivity and high porosity, widely used in applications such as thermal insulation, energy storage, and aerospace engineering. Among them, polyimide aerogels stand out for their excellent thermal stability, mechanical strength, and chemical resistance. However, their permanently cross-linked networks make them non-recyclable, posing a significant sustainability challenge. Here, a novel closed-loop recycling approach for polyimide aerogels based on dynamic Diels-Alder chemistry is presented, utilizing an aerogel-sol-aerogel (ASA) process. Matrimid, a commercial polyimide, is post-functionalized with furfurylamine to form a furan-modified poly(amide-imide) (PAI-FU), which reacts with bismaleimide via a

SUBMITTER: Xiong Y 

PROVIDER: S-EPMC12617025 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature