Tuning the water interactions of cellulose nanofibril hydrogels using willow bark extract

Huynh, Ngoc; Valle‐Delgado, Juan José; Fang, Wenwen; Arola, Suvi; Österberg, Monika

doi:10.1016/j.carbpol.2023.121095

Cited by 6 publications

(2 citation statements)

References 54 publications

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“…The increasing viscosity of the foam is commonly known to reduce the foaming capacity of the system . A recent study proposed that the underlying mechanism behind increased viscosity is the reduced repulsion between cellulose fibrils due to the adsorption of WBE onto the fibril surfaces, which leads to the dehydration of hydrogel and consequently increased hydrogel strength . As the viscosity increases in the system, it is more difficult to get the material to flow even with high shearing and to introduce air bubbles into the system.…”

Section: Resultsmentioning

confidence: 99%

Bioactive Fiber Foam Films from Cellulose and Willow Bark Extract with Improved Water Tolerance

Lohtander,

Koso,

Huynh

et al. 2024

ACS Omega

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Cellulose-based materials are gaining increasing attention in the packaging industry as sustainable packaging material alternatives. Lignocellulosic polymers with high quantities of surface hydroxyls are inherently hydrophilic and hygroscopic, making them moisture-sensitive, which has been retarding the utilization of cellulosic materials in applications requiring high moisture resistance. Herein, we produced lightweight all-cellulose fiber foam films with improved water tolerance. The fiber foams were modified with willow bark extract (WBE) and alkyl ketene dimer (AKD). AKD improved the water stability, while the addition of WBE was found to improve the dry strength of the fiber foam films and bring additional functionalities, that is, antioxidant and ultraviolet protection properties, to the material. Additionally, WBE and AKD showed a synergistic effect in improving the hydrophobicity and water tolerance of the fiber foam films. Nuclear magnetic resonance (NMR) spectroscopy indicated that the interactions among WBE, cellulose, and AKD were physical, with no formation of covalent bonds. The findings of this study broaden the possibilities to utilize cellulose-based materials in high-value active packaging applications, for instance, for pharmaceutical and healthcare products or as water-resistant coatings for textiles, besides bulk packaging materials.

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Section: Resultsmentioning

confidence: 99%

Bioactive Fiber Foam Films from Cellulose and Willow Bark Extract with Improved Water Tolerance

Lohtander,

Koso,

Huynh

et al. 2024

ACS Omega

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“…Water absorption performance is a critical parameter for cellulose hydrogels, particularly when utilized as moisture-absorbing materials or in drug delivery systems [ 110 , 111 , 112 , 113 , 114 ]. This performance is influenced by factors such as cross-linking density [ 115 ], pore structure [ 116 ], and the hydrophilicity of the material [ 116 ], influencing the water absorption performance, typically measured by water absorption rate [ 117 ] and water content [ 118 ], which reflect the gel’s ability to absorb and retain moisture.…”

Section: Performance Evaluation Of Cellulose Hydrogelsmentioning

confidence: 99%

Exploring Applications and Preparation Techniques for Cellulose Hydrogels: A Comprehensive Review

Tang,

Fang,

Lee

2024

Gels

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Cellulose hydrogels, formed either through physical or chemical cross-linking into a three-dimensional network from cellulose or its derivatives, are renowned for their exceptional water absorption capacities and biocompatibility. Rising demands for sustainable materials have spurred interest in cellulose hydrogels, attributed to their abundant supply, biodegradability, and non-toxic nature. These properties highlight their extensive potential across various sectors including biomedicine, the food industry, and environmental protection. Cellulose hydrogels are particularly advantageous in applications such as drug delivery, wound dressing, and water treatment. Recent large-scale studies have advanced our understanding of cellulose preparation and its applications. This review delves into the fundamental concepts, preparation techniques, and current applications of cellulose hydrogels in diverse fields. It also discusses the latest advances in nano-lignin-based hydrogels, providing a comprehensive overview of this promising material and offering insights and guidance for future research and development.

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Obtaining of a rich-cellulose material from black wattle (Acacia mearnsii De Wild.) bark residues

Rodrigues,

Pedroso,

de Freitas

et al. 2023

Environ Sci Pollut Res

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Tuning the water interactions of cellulose nanofibril hydrogels using willow bark extract

Cited by 6 publications

References 54 publications

Bioactive Fiber Foam Films from Cellulose and Willow Bark Extract with Improved Water Tolerance

Bioactive Fiber Foam Films from Cellulose and Willow Bark Extract with Improved Water Tolerance

Exploring Applications and Preparation Techniques for Cellulose Hydrogels: A Comprehensive Review

Obtaining of a rich-cellulose material from black wattle (Acacia mearnsii De Wild.) bark residues

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