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Cellulose Nanocompo...
Cellulose Nanocomposite Hydrogels : From Formulation to Material Properties
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- Butylina, Svetlana (author)
- Luleå tekniska universitet,Materialvetenskap,Laboratory of Computational and Process Engineering, Lappeenranta-Lahti University of Technology, Lappeenranta, Finland
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- Geng, Shiyu (author)
- Luleå tekniska universitet,Materialvetenskap
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- Laatikainen, Katri (author)
- Laboratory of Computational and Process Engineering, Lappeenranta-Lahti University of Technology, Lappeenranta, Finland
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- Oksman, Kristiina, 1959- (author)
- Luleå tekniska universitet,Materialvetenskap,Mechanical & Industrial Engineering (MIE), University of Toronto, Toronto, ON, Canada
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(creator_code:org_t)
- 2020-09-11
- 2020
- English.
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In: Frontiers in Chemistry. - : Frontiers Media S.A.. - 2296-2646. ; 8
- Related links:
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https://www.frontier...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- Poly(vinyl alcohol) (PVA) hydrogels produced using the freeze-thaw method have attracted attention for a long time since their first preparation in 1975. Due to the importance of polymer intrinsic features and the advantages associated with them, they are very suitable for biomedical applications such as tissue engineering and drug delivery systems. On the other hand, there is an increasing interest in the use of biobased additives such as cellulose nanocrystals, CNC. This study focused on composite hydrogels which were produced by using different concentrations of PVA (5 and 10%) and CNC (1 and 10 wt.%), also, pure PVA hydrogels were used as references. The main goal was to determine the impact of both components on mechanical, thermal, and water absorption properties of composite hydrogels as well as on morphology and initial water content. It was found that PVA had a dominating effect on all hydrogels. The effect of the CNC addition was both concentration-dependent and case-dependent. As a general trend, addition of CNC decreased the water content of the prepared hydrogels, decreased the crystallinity of the PVA, and increased the hydrogels compression modulus and strength to some extent. The performance of composite hydrogels in a cyclic compression test was studied; the hydrogel with low PVA (5) and high CNC (10) content showed totally reversible behavior after 10 cycles.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik -- Biomaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology -- Bio Materials (hsv//eng)
Keyword
- poly(vinyl alcohol)
- cellulose nanocrystals
- water absorption
- thermograms
- compression
- load-unload experiments
- Trä och bionanokompositer
- Wood and Bionanocomposites
Publication and Content Type
- ref (subject category)
- art (subject category)
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