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Layer‐by‐Layer Assembly of Nanofiber/Nanoparticle Artificial Skin for Strain‐Insensitive UV Shielding and Visualized UV Detection
Author(s) -
Liang Fei,
Fan You Jun,
Kuang Shuang Yang,
Wang Hai Lu,
Wang Ying,
Xu Peng,
Wang Zhong Lin,
Zhu Guang
Publication year - 2020
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201900976
Subject(s) - materials science , electromagnetic shielding , ultraviolet , nanofiber , layer (electronics) , composite material , polyurethane , nanoparticle , deformation (meteorology) , strain (injury) , gauge factor , artificial skin , porosity , human skin , transmittance , optoelectronics , nanotechnology , fabrication , biomedical engineering , medicine , alternative medicine , pathology , biology , genetics
Here, a strain‐insensitive, durable, and visualized ultraviolet (UV) detectible multilayered artificial UV shielding skin (MUVS‐skin) is demonstrated. The electrospinning of polyurethane nanofibers and electrospraying of TiO 2 nanoparticles are alternatingly conducted to assemble the MUVS‐skin. The results show that the stability of UV shielding property under different strains (50%, 100%, 150%, and 200%) is enhanced as more layers are assembled. The ultraviolet protection factor of the strain‐free MUVS‐skin (119 µm) is 10 810 and reaches to 5685 at 200% strain. Moreover, the effective transmittance (at 365 nm) of MUVS‐skin (119 µm) after being stretched for 10 000 cycles at 200% strain is only 0.125%. This stable UV shielding property is ascribed to the low‐level variation in the porosity of the multilayered structure, which originates from the enhanced slippage between adjacent layers. Furthermore, ultraviolet A (UVA) and ultraviolet B (UVB) can be precisely detected as the luminescence of blue and red for the MUVS‐skin integrates with a phosphor layer (MUVS‐skin/P). Owing to the excellent stable UV shielding property, visualized UV detection and durability against cyclic deformation, this MUVS‐skin/P might be extensively applied to the smart wearable artificial skin and protective clothing.