Sustainable versatile chitin aerogels: facile synthesis, structural control and high-efficiency acoustic absorption.

ABSTRACT: Bio-based materials with excellent acoustic absorption properties are in great demand in architecture, interior, and human settlement applications for efficient noise control. In this study, crayfish shells, a form of kitchen waste, are utilized as the primary material to produce ultralight and multifunctional chitin aerogels, which effectively eliminate noise. Different replacement solvents and freezing rates were employed to regulate the porous structures of chitin aerogels, and their resulting acoustic absorption performance was investigated. Results demonstrate that employing deionized water as the replacement solvent and utilizing a common-freeze mode (frozen via refrigerator at -26 °C) can produce chitin aerogels with larger porosity (96.26%) and apertures, as well as thicker

SUBMITTER: Wan JN 

PROVIDER: S-EPMC11247434 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature