Cellulose nanofibers (CNF), made from wood yet said to have tensile strength five times that of steel, are biodegradable and are expected to be the ace material for Earth’s regeneration as a carbon-neutral material.
A research group led by Mikio Fukuhara (research fellow), Fumihiko Hasegawa (Former Director) and Prof. Toshiyuki Hashida (Graduate School of Engineering) has revealed through ultrasonic measurements that TEMPO-oxidized CNF is essentially amorphous (non-crystalline), and its four types of elastic moduli are significantly lower than those of mild steel (S10C) and stainless steel (SUS304).
Furthermore, based on the low attenuation coefficients for both longitudinal and transverse waves, this material is expected to be applied as a propagation medium for harmonic sounds in acoustic equipment components such as speakers, microphones, and earphones.
The results were published in MRS Communications on April 16, 2021.
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