2025-07-08 ヒューストン大学(UH)
Rahman holds the bioplastic, made of bacterial cellulose, that could replace plastic
＜関連情報＞
- https://uh.edu/news-events/stories/2025/july/07082025-rahman-bacterial-cellulose-plastic.php
- https://www.nature.com/articles/s41467-025-60242-1
バクテリアセルロースをインターカレートした流動誘起2次元ナノ材料 Flow-induced 2D nanomaterials intercalated aligned bacterial cellulose
M.A.S.R. Saadi,Yufei Cui,Shyam P. Bhakta,Sakib Hassan,Vijay Harikrishnan,Ivan R. Siqueira,Matteo Pasquali,Matthew Bennett,Pulickel M. Ajayan & Muhammad M. Rahman
Nature Communications Published:01 July 2025
DOI:https://doi.org/10.1038/s41467-025-60242-1
Abstract
Bacterial cellulose is a promising biodegradable alternative to synthetic polymers due to the robust mechanical properties of its nano-fibrillar building blocks. However, its full potential of mechanical properties remains unrealized, primarily due to the challenge of aligning nanofibrils at the macroscale. Additionally, the limited diffusion of other nano-fillers within the three-dimensional nanofibrillar network impedes the development of multifunctional bacterial cellulose-based nanosheets. Here, we report a simple, single-step, and scalable bottom-up strategy to biosynthesize robust bacterial cellulose sheets with aligned nanofibrils and bacterial cellulose-based multifunctional hybrid nanosheets using shear forces from fluid flow in a rotational culture device. The resulting bacterial cellulose sheets display high tensile strength (up to ~ 436 MPa), flexibility, foldability, optical transparency, and long-term mechanical stability. By incorporating boron nitride nanosheets into the liquid nutrient media, we fabricate bacterial cellulose-boron nitride hybrid nanosheets with even better mechanical properties (tensile strength up to ~ 553 MPa) and thermal properties (three times faster rate of heat dissipation compared to control samples). This biofabrication approach yielding aligned, strong, and multifunctional bacterial cellulose sheets would pave the way towards applications in structural materials, thermal management, packaging, textiles, green electronics, and energy storage.
