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Strong, transparent...
Strong, transparent, and thermochromic composite hydrogel from wood derived highly mesoporous cellulose network and PNIPAM
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- Wang, Shennan, Dr. 1992- (författare)
- KTH,Glykovetenskap,.
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- Chen, Hui (författare)
- KTH,Wallenberg Wood Science Center
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- Li, Kai (författare)
- KTH,Glykovetenskap
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- Koskela, Salla (författare)
- KTH,Glykovetenskap,Wallenberg Wood Science Center
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- Berglund, Lars, 1956- (författare)
- KTH,Wallenberg Wood Science Center,Fiber- och polymerteknologi
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- Zhou, Qi (författare)
- KTH,Glykovetenskap,Wallenberg Wood Science Center
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Composites. Part A, Applied science and manufacturing. - : Elsevier BV. - 1359-835X .- 1878-5840. ; 154, s. 106757-
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Composite polymer hydrogels are of significant interests for high optical transparency and mechanical performance. In this work, a strong and transparent composite hydrogel is developed from a highly mesoporous cellulose network prepared from wood via top-down delignification followed by TEMPO-mediated oxidation and in situ polymerization of PNIPAM. Individualization of cellulose microfibrils inside the wood cell wall is critical for the fabrication of free-standing composite hydrogel with high water content of 94.9 wt% and high optical transmittance of 85.8% with anisotropic light scattering behavior. The composite hydrogel also showed anisotropic mechanical properties with a tensile strength, Young's modulus and toughness of 317 kPa, 5.4 MPa, and 39.2 kJ m- 3 in axial direction, and 152 kPa, 0.31 MPa and 57.1 kJ m- 3 in the transverse direction, respectively. It also showed thermochromic behavior, i.e., reversibly changing between transparent and brightly white by a temperature change between 25 and 40 degrees C, demonstrating great potential for optical applications.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik -- Biomaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology -- Bio Materials (hsv//eng)
Nyckelord
- Composite hydrogel
- A
- Cellulose
- B
- Mechanical properties
- Optical properties
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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