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Synthetic Plant Cut...
Synthetic Plant Cuticle Coating as a Biomimetic Moisture Barrier Membrane for Structurally Colored Cellulose Films
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- Anusuyadevi, Prasaanth Ravi (author)
- KTH,Fiber- och polymerteknologi,M S Ramaiah Institute of Technology, Dept. of Chemical Engineering, Bangalore, Karnataka, 560054, India, Karnataka,Royal Inst Technol KTH, Sweden; M S Ramaiah Inst Technol, India
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- Singha, Shuvra (author)
- KTH,Fiber- och polymerteknologi,Royal Inst Technol KTH, Sweden
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- Banerjee, Debashree (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,Wallenberg Wood Sci Ctr, Sweden
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- Jonsson, Magnus (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,Wallenberg Wood Sci Ctr, Sweden
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- Hedenqvist, Mikael S. (author)
- KTH,Polymera material
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- Svagan, Anna Justina (author)
- KTH,Fiber- och polymerteknologi,Royal Inst Technol KTH, Sweden
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(creator_code:org_t)
- 2023-01-20
- 2023
- English.
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In: Advanced Materials Interfaces. - : Wiley. - 2196-7350. ; 10:7
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https://liu.diva-por... (primary) (Raw object)
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Abstract
Subject headings
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- Photonic films based on cellulose nanocrystals (CNCs) are sustainable candidates for sensors, structurally colored radiative cooling, and iridescent coatings. Such CNC-based films possess a helicoidal nanoarchitecture, which gives selective reflection with the polarization of the incident light. However, due to the hygroscopic nature of CNCs, the structural colored material changes and may be irreversibly damaged at high relative humidity. Thus, moisture protection is essential in such settings. In this work, hygroscopic CNC-based films are protected with a bioinspired synthetic plant cuticle; a strategy already adopted by real plants. The protective cuticle layers altered the reflected colors to some extent, but more importantly, they significantly reduced the water vapor permeance by more than two orders of magnitude, from 2.1 × 107 (pristine CNC/GLU film) to 12.3 × 104 g µm m−2 day−1 atm−1 (protected CNC/GLU film). This expands significantly the time window of operation for CNC/GLU films at high relative humidity.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- cellulose nanocrystals
- moisture barrier
- structural colors
- synthetic plant cuticle
Publication and Content Type
- ref (subject category)
- art (subject category)
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