期刊
LANGMUIR
卷 33, 期 34, 页码 8455-8462出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.7b01665
关键词
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资金
- State Key Laboratory of Pulp and Papermaking Engineering [2016PY01, 201709]
- Fundamental Research Funds for the Central Universities [2015ZM156]
- Foundation of Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education/Shandong Province of China [KF201619]
- National Key R & D Program of China [2016YFB0401504]
- NSFC [U1601651]
- Science and Technology Project of Guangdong Province [2014B090915004, 2016B090907001]
- Guangdong Climbing Program for College Students
- China Scholarship Council [201606150041]
A viable solution toward green optoelectronics is rooted in our ability to fabricate optoelectronics on transparent nanofibrillated cellulose (NFC) film substrates. However, the flammability of transparent NFC film poses a severe fire hazard in optoelectronic devices. Despite many efforts toward enhancing the fire-retardant features of transparent NFC film, making NFC film fire-retardant while maintaining its high transparency (>= 90%) remains an ambitious objective. Herein, we combine NFC with NFC-dispersed monolayer clay nanoplatelets as a fire retardant to prepare highly transparent NFC-monolayer clay nanoplatelet hybrid films with a superb self-extinguishing behavior. Homogeneous and stable monolayer clay nanoplatelet dispersion was initially obtained by using NFC as a green dispersing agent with the assistance of ultrasonication and then used to blend with NFC to prepare highly transparent and self-extinguishing hybrid films by a water evaporation-induced self assembly process. As the content of monolayer clay nanoplatelets increased from 5 wt % to SO wt %, the obtained hybrid films presented enhanced self-extinguishing behavior (limiting oxygen index sharply increased from 21% to 96.5%) while retaining a,similar to 90% transparency at 600 nm. More significantly, the underlying mechanisms for the high transparency and excellent self extinguishing behavior of these hybrid films with a clay nanoplatelet content of. over 30 wt % were unveiled by a series of characterizations such as SEM, XRD, TGA, and limiting oxygen index tester. This work offers an alternative environmentally friendly, self-extinguishing, and highly transparent substrate to next-generation optoelectronics, and is aimed at providing a viable solution to environmental concerns that are caused by ever-increasing electronic waste.
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