Sustainable Multiscale High-Haze Transparent Cellulose Fiber Film via a Biomimetic Approach,ACS Materials Letters

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Sustainable Multiscale High-Haze Transparent Cellulose Fiber Film via a Biomimetic Approach
ACS Materials Letters ( IF 9.6 ) Pub Date : 2021-12-03 , DOI: 10.1021/acsmaterialslett.1c00630
Qing-Fang Guan ₁ , Kun-Peng Yang ₁ , Zi-Meng Han ₁ , Huai-Bin Yang ₁ , Zhang-Chi Ling ₁ , Chong-Han Yin ₁ , Shu-Hong Yu ₁

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Chinese traditional Xuan paper is distinguished for its high strength, high toughness, and high flexibility. Microscopically, this remarkable mechanical property is derived from its uniform nano- and microscale structure. Here, inspired by the multiscale structure design of biomaterials and Xuan paper, we report an ultrastrong and ultraflexible transparent cellulose fiber film with an ultrafine nano- and microscale structure. Through introducing micron-sized cellulose fibers into the cellulose nanofiber network, the multiscale film combines high strength (258 MPa) and toughness (7.90 MJ m^–3) and low thermal expansion coefficients as well as high light transmittance (82.7%) and high haze (97.4%) simultaneously in one material. Moreover, the multiscale design endows the film to be restored to intactness after being fully folded and rolled, making it a high-performance and eco-friendly alternative film material for practical application in flexible electronic devices.

更新日期：2022-01-03

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