An Efficient and Economic Approach for Producing Nanocellulose-Based Aerogel from Kapok Fiber.

ABSTRACT: Cellulose nanofibers (NF) were extracted from kapok fibers using TEMPO oxidation, followed by a combination of mechanical grinding and ultrasonic processing. The TEMPO-mediated oxidation significantly impacted the mechanical disintegration behavior of the kapok fibers, resulting in a high NF yield of 98%. This strategy not only improved the fibrillation efficiency but also reduced overall energy consumption during NF preparation. An ultralight and highly porous NF-based aerogel was successfully prepared using a simple ice-templating technique. It had a low density in the range of 3.5-11.2 mg cm^-3, high compressional strength (160 kPa), and excellent thermal insulation performance (0.024 W m^-1 K^-1). After silane modification, the aerogel displayed an ultralo

SUBMITTER: Hou M 

PROVIDER: S-EPMC11353854 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature