Cross-linked nanocomposite hydrogels based on cellulose nanocrystals and PVA: Mechanical properties and creep recovery
By S. Tanpichai, Kristiina Oksman. 2016
162 citations recorded by the source corpus.
Abstract Cellulose nanocrystal (CNC) reinforced poly(vinyl alcohol) (PVA) hydrogels with a water content of ∼92% were successfully prepared with glutaraldehyde (GA) as a cross-linker. The effects of the CNC content on the thermal stability, swelling ratio and mechanical and viscoelastic properties of the cross-linked hydrogels were investigated. The compressive strength at 60% strain for the hydrogels with 1 wt% CNCs increased by 303%, from 17.5 kPa to 53 kPa. The creep results showed that the addition of CNCs decreased the creep elasticity due to molecular chain restriction. The almost complete strain recovery (∼97%) after fixed load removal for 15 min was observed from the hydrogels with CNCs, compared with 92% strain recovery of the neat cross-linked PVA hydrogels. The incorporation of CNCs did not affect the swelling ratio and thermal stability of the hydrogels. These results suggest the cross-linked CNC-PVA hydrogels have potential for use in biomedical and tissue engineering applications.
Subfields: Biomaterials, Plant Science
View Paper: https://www.semanticscholar.org/paper/dead1ded2f6f97b1ce5705a43c6ed4980c464a8e
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In Biomaterials
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Citations in the corpus
- Applications of nanocomposite hydrogels for biomedical engineering and environmental protection (2018, background): “Cellulose nanocrystal–poly(vinyl alcohol) hydrogels was fabricated and showed potential for use in biomedical and tissue engineering applications (Tanpichai and Oksman 2016).”
- Preparation and characterization of nanocellulose reinforced semi-interpenetrating polymer network of chitosan hydrogel (2017, background): “Recently, the effects of nanocellulose on different types of hydrogels, such as gelatin, alginate, poly(vinyl alcohol), and collagen, have also been investigated for various applications, such as drug delivery, organic pollutant absorption, and tissue engineering (Li et al. 2015; Mohammed et al. 201”