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Updated: Feb 10, 2026

Synthesis Method for Cellulose Nanofiber Biotemplated Palladium Composite Aerogels
Published on: May 9, 2019
Nano-fibrillated cellulose-hydroxyapatite based composite foams with excellent fire resistance
Wenwen Guo1, Xin Wang1, Ping Zhang2
1State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
Abstract:
Thermally insulating materials made from renewable resources are desirable for energy efficient buildings. Traditional petroleum-derived insulating materials such as rigid polyurethane foam and expanded polystyrene display poor flame retardancy and inorganic insulating materials such as silica aerogel are fragile. Herein, we reported a facile approach to prepare cellulose nanofiber (CNF)-hydroxyapatite (HAP) composite foam by a simple freeze-drying process. The resultant HAP-CNF composite foams showed a thermal conductivity in the range of 38.5-39.1 mW/(m K) and very low peak heat release rate (20.4 kW/m2) and total heat release (1.21 MJ/m2). Vertical burning tests also manifested excellent fire resistance and self-extinguishing behaviours. Considering the excellent fire resistance of this composite foam, it is of significance to fire safety solution for buildings insulating materials.
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