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Bioinspired Interfa...
Bioinspired Interface Engineering for Moisture Resistance in Nacre-Mimetic Cellulose Nanofibrils/Clay Nanocomposites
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- Yao, Kun (author)
- KTH,Glykovetenskap,Wallenberg Wood Science Center
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- Huang, Shu (author)
- KTH,Skolan för bioteknologi (BIO)
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- Tang, Hu (author)
- KTH,Skolan för bioteknologi (BIO)
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Xu, Y. (author)
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Buntkowsky, G. (author)
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- Berglund, Lars A. (author)
- KTH,Fiber- och polymerteknologi,Wallenberg Wood Science Center
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- Zhou, Qi (author)
- KTH,Glykovetenskap,Wallenberg Wood Science Center
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(creator_code:org_t)
- 2017-05-31
- 2017
- English.
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In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 9:23, s. 20169-20178
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The interfacial adhesion design between "mortar" and "bricks" is essential for mechanical and barrier performance of nanocellulose-based nacre-mimetic nanocomposites, especially at high moisture conditions. To address this fundamental challenge, dopamine (DA) has been conjugated to cellulose nanofibrils (CNFs) and subsequently assembled with montmorillonite (MTM) to generate layered nanocomposite films inspired by the strong adhesion of mussel adhesive proteins to inorganic surfaces under water. The selective formation of catechol/metal ion chelation and hydrogen bonding at the interface between MTM platelets and CNFs bearing DA renders transparent films with strong mechanical properties, particularly at high humidity and in wet state. Increasing the amount of conjugated DA on CNFs results in nanocomposites with increased tensile strength and modulus, up to 57.4 MPa and 1.1 GPa, respectively, after the films are swollen in water. The nanocomposites also show excellent gas barrier properties at high relative humidity (95%), complementing the multifunctional property profile.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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