Tohoku Univ. Technology : Fabrication of cellulose single filaments : T23-035
High-strength cellulose filament fabricated from cellulose nanofibrils
Cellulose nanofibrils (CNFs) are highly crystalline nanofibers obtained from wood pulp. CNFs are environmentally compatible new materials with excellent mechanical properties such as light weight, high strength, and low thermal expansion. Because of these outstanding mechanical characteristics, CNFs are expected to be applied to automotive components, electronic devices, gas barrier materials, and medical materials. On the other hand, chemical fibers made of cellulose, known as rayon, are also used in clothing and tire materials as regenerated fibers made from wood pulp and cotton cellulose. Regenerated fibers using CNF as a raw material have been researched and developed, however the mechanical properties of the fabricated single cellulose filaments have not been sufficient. By developing an innovated CNF orientation control method using flow and electric fields, we have successfully fabricated high-strength cellulose single filament.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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