High-strength hydrogels fabricated by precise control of cellulose nanofibrils
Cellulose nanofibril (CNF) is a highly crystalline microfibril derived from wood fiber. It is an environmentally friendly innovative material with excellent mechanical properties such as light weight, high strength, and low thermal expansion. Owing to these characteristics, it is expected to be applied to automotive components, electronic devices, gas barrier materials, and medical materials. A technology to fabricate single filaments composed of CNF has been also developed, and long filaments with high strength have been obtained. Based on the previously obtained knowledges and established methodology, functional materials using CNF have been developed in various fields, including the present invention relates to the fabrication of hydrogels. There are several hydrogel fabrication methods such as using electrophoresis and freeze-crosslinking, however, they were not suitable for mass production, and a new method was anticipated. As a result of intensive research, a method for precisely controlling the CNF orientation and the internal structure of hydrogels was developed, which realizes the contamination-free and high-strength hydrogels. It was found that the strength of gels can be designed from isotropic to anisotropic by tuning the fabrication conditions.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding 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 - Showa Medical University
