2017/10/25 by Lucile Druel, Richard Bardl, Waltraud Vorwerg +1 · 1 citation
Chemistry · Materials Science · #Aerogels and thermal insulation #Advanced Cellulose Research Studies #Surface Modification and Superhydrophobicity
paper · doi:10.1021/acs.biomac.7b01272
openalex publication_date 2017/10/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22
Starch aerogels were prepared via dissolution in water (thermomechanical treatment), retrogradation, solvent exchange, and drying with supercritical CO 2 . Amylose content in starches was varied from 0 to 100%. The aerogels’ bulk density, morphology, specific surface area, thermal conductivity, and mechanical properties under compression were investigated. Pea starch aerogels had one of the highest specific surface area and lowest density and thermal conductivity (0.021–0.023 W/m·K), with the latter indicating that a new thermal superinsulation material was obtained. A detailed study of the influence of processing parameters on pea starch aerogels properties showed the importance of retrogradation time which decreases specific surface area and increases mechanical properties and thermal conductivity. Finally, a comparison of starch aerogel thermal conductivity with that of other bioaerogels is performed.