A green composite hydrogel based on xylan and lignin with adjustable mechanical properties, high swelling, excellent <scp>UV</scp> shielding, and antioxidation properties

Yi, Yanbin; Wang, Xiaohui; Li, Zhong‐Ming; Gao, Chao; Fatehi, Pedram; Wang, Shoujuan; Kong, Fangong

doi:10.1002/app.52520

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…This is due to the fact that stronger crosslinking of the SF/MXene hydrogel not only weakens the ability to absorb water but also enhances its mechanical strength. Such a phenomenon is also commonly observed in other hydrogels [39,40].…”

Section: Resultssupporting

confidence: 71%

Injectable Bombyx mori (B. mori) silk fibroin/MXene conductive hydrogel for electrically stimulating neural stem cells into neurons for treating brain damage

Yang,

You,

Liu

et al. 2024

J Nanobiotechnol

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Brain damage is a common tissue damage caused by trauma or diseases, which can be life-threatening. Stem cell implantation is an emerging strategy treating brain damage. The stem cell is commonly embedded in a matrix material for implantation, which protects stem cell and induces cell differentiation. Cell differentiation induction by this material is decisive in the effectiveness of this treatment strategy. In this work, we present an injectable fibroin/MXene conductive hydrogel as stem cell carrier, which further enables in-vivo electrical stimulation upon stem cells implanted into damaged brain tissue. Cell differentiation characterization of stem cell showed high effectiveness of electrical stimulation in this system, which is comparable to pure conductive membrane. Axon growth density of the newly differentiated neurons increased by 290% and axon length by 320%. In addition, unfavored astrocyte differentiation is minimized. The therapeutic effect of this system is proved through traumatic brain injury model on rats. Combined with in vivo electrical stimulation, cavities formation is reduced after traumatic brain injury, and rat motor function recovery is significantly promoted. Graphical Abstract

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Section: Resultssupporting

confidence: 71%

Injectable Bombyx mori (B. mori) silk fibroin/MXene conductive hydrogel for electrically stimulating neural stem cells into neurons for treating brain damage

Yang,

You,

Liu

et al. 2024

J Nanobiotechnol

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“…Slower thermal degradation is observed for PP-pine pellets, resulting in a 28% mass loss, while PPflax pellets lose 13% mass. A recent study indicated an enhancement in the thermal stability of PAM and CMX hydrogels following the introduction of lignin [22]. For the third stage (up to 600°C), additional losses of 12% for flax fibre and 8% for pine fibre are noted.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Effects of Lignin on the Thermal and Morphological Properties and Damages Mechanisms after UV Irradiation of Polypropylene Biocomposites Reinforced with Flax and Pine Fibres: Acoustic Emission Analysis

Belouadah,

Nasri,

Toubal

2024

Preprint

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Various wood fibres, including pine and flax, are used in wood–plastic composites (WPCs). This paper studies the effect of the lignin content on the morphological and thermal degradation and damage due to the ultraviolet (UV) aging of polypropylene/flax (PP-flax) and polypropylene/pine (PP-pine) fibres composites. Flax and pine fibres exhibited distinct densities of 1.51 and 1.47 g/cm³, respectively, potentially influenced by growth factors and varying compositions of light substances, such as hemicellulose, lignin, and impurities. The thermal decomposition mass loss increased proportionally with the percentage of lignin in the fibre. From 238°C to 390°C, the pine fibre exhibited a 72% mass loss compared to flax fibre, which showed a 54% mass loss, owing to the higher lignin content in pine fibres. Based on differential scanning calorimetry (DSC), the fibre composition affected the material melting temperature. Moreover, DSC curves revealed a higher degree of crystallinity in the case of the PP-flax biocomposite (12%) compared to pure polypropylene (9%) and PP-pine (6%). This result can be attributed to the high content of crystalline components in flax fibres, such as cellulose. Acoustic emissions analysis confirmed that the high lignin content delays degradation and mitigates the appearance of microcracks on the surface of the PP-pine biocomposite. Overall, the study provides valuable data for understanding the UV degradation phenomenon in biocomposites and highlights the influence of fibre composition on material performance.

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“…utilizaram nanofibras de carbono derivada de lignina alcalina na produção de eletrocatalisador livre de metal. Yi et al; adicionaram lignina a um hidrogel a base de carboximetil xilano e notaram que sua presença melhorou as propriedades mecânicas do hidrogel, como tensão de compressão e tenacidade.…”

Section: Licor Negro (Subproduto)unclassified

Obtenção de micro e nanocelulose a partir de biomassa lignocelulósica de resíduo do ingá-cipó (Inga edulis Mart.) via tratamento químico

Gomes

Souza

Nascimento

et al. 2023

PRW

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A busca por novos materiais sustentáveis ocasiona um aumento gradativo de estudos direcionados à utilização de matéria-prima renovável, visando gerar produtos não agressivos ao meio ambiente, mantendo sua qualidade e desempenho. Os frutos do ingá-cipó geram resíduos que são ótimas fontes de biomassa lignocelulósica. Nesse sentido, o objetivo deste trabalho foi obter micro e nanocelulose cristalina a partir da biomassa lignocelulosica da casca do fruto do ingá-cipó via tratamento químico, assim como realizar sua caracterização físico-química e morfológica. As cascas foram submetidas a uma extração sequencial de hemicelulose e lignina, seguindo da síntese de micro e nanocelulose por hidrólise ácida. O material obtido foi caracterização através de infravermelho com transformada de Fourier (FTIR) e microscopia eletrônica de transmissão (MET). Através das análises de FTIR foi possível constatar a presença dos grupos funcionais típicos de celulose. As imagens provenientes do MET, auxiliaram a visualização de micro e nanocelulose cristalina, que poderão ser utilizadas na geração de novos materiais com melhor valor agregado.

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A green composite hydrogel based on xylan and lignin with adjustable mechanical properties, high swelling, excellent UV shielding, and antioxidation properties

Cited by 12 publications

References 43 publications

Injectable Bombyx mori (B. mori) silk fibroin/MXene conductive hydrogel for electrically stimulating neural stem cells into neurons for treating brain damage

Injectable Bombyx mori (B. mori) silk fibroin/MXene conductive hydrogel for electrically stimulating neural stem cells into neurons for treating brain damage

Effects of Lignin on the Thermal and Morphological Properties and Damages Mechanisms after UV Irradiation of Polypropylene Biocomposites Reinforced with Flax and Pine Fibres: Acoustic Emission Analysis

Obtenção de micro e nanocelulose a partir de biomassa lignocelulósica de resíduo do ingá-cipó (Inga edulis Mart.) via tratamento químico

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