A lignin-containing cellulose hydrogel for lignin fractionation

Dai, Lin; Zhu, Wanling; Lü, Jinshun; Kong, Fangong; Si, Chuanling; Ni, Yonghao

doi:10.1039/c9gc01975h

Cited by 99 publications

(47 citation statements)

References 35 publications

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“…[108] In addition, Dai et al developed a novel hydrogel-assisted fractionation approach using lignin-containing cellulose (Cell-AL) hydrogel to fractionate lignin to produce uniform lignins. [118] Depending on the future use of the lignin, the right technique to obtain the fractions has to be chosen.…”

Section: Further Fractionation Of Ligninmentioning

confidence: 99%

Biomass Fractionation and Lignin Fractionation towards Lignin Valorization

et al. 2020

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Lignin, as the most abundant aromatic biopolymer in nature, has attracted great attention due to the complexity and richness of its functional groups for value‐added applications. The yield of production of lignin and the reactivity of prepared lignin are very important to guarantee the study and development of lignin‐based chemicals and materials. Various fractionation techniques have been developed to obtain high yield and relatively high‐purity lignin as well as carbohydrates (hemicelluloses and celluloses) and to reduce the condensed and degraded nature of conventional biorefinery lignin. Herein, novel and efficient biomass fractionation and lignin fractionation towards lignin valorization are summarized and discussed.

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Section: Further Fractionation Of Ligninmentioning

confidence: 99%

Biomass Fractionation and Lignin Fractionation towards Lignin Valorization

et al. 2020

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“…Figure 1F illustrates the Fourier transform infrared (FT‐IR) spectra MCC, MCC@Fe 3 O 4 , and MCC@Fe 3 O 4 /lignin‐Ca 2+ hydrogel, in which the characteristic peaks (1155 and 1054 cm −1 ) are ascribed to the deformation vibration of C‐O‐C and C‐O, respectively (Figure S2, Supporting Information), demonstrating the successful crossing reaction between lignin and MCC by ECH. [ 19 ] In addition, it is clear that the peaks (2918 cm −1 ) in the MCC@Fe 3 O 4 /lignin‐Ca 2+ hydrogel are related to the existence of lignin. [ 20 ] Figure 1G and Figure S3 in the Supporting Information show that MCC hydrogel does not present magnetic property (0 emu g −1 ) in the absent of Fe 3 O 4 NPs under the magnetic‐hysteresis (M‐H) measurements.…”

Section: Resultsmentioning

confidence: 99%

Durable Photoetching Magnetic Biomass‐Based Hydrogel with High Performance

Zhang

et al. 2021

Adv Materials Inter

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Benefiting from the economic raw materials and efficient f abrication process, it is easy to directly scale up the hydrogels for biomedical scaffolds, functional materials, and storage systems. However, it remains challenging to construct stable hydrogel combining photoetching technology with low‐cost, room‐temperature, and low‐pressure fabrication. Here, a novel photoetching microcrystalline cellulose (M C C) @ Fe3O4/lignin‐Ca2+ hydrogel with excellent compressive strength (up to 300 kPa) is reported and its elasticity is well maintained under the temperature (−25–100 °C). Interestingly, the magnetic hydrogel exhibits controllable photoetching patterns based on the photothermal effect of Fe3O4 nanoparticles under near‐infrared irradiation (808 nm), especially in the different circumstances including enclosed space and underwater condition. In addition, the magnetic hydrogel displays the outstanding fire resistance and UV absorption (100%). The photoetching magnetic cellulose‐based hydrogel has great potential toward environmental‐friendly devices and applications in optics, electronics, sensors, and other miniature devices.

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“…These superabsorbents hydrogels were evaluated for the controlled release of polyphenols. Cellulose-alkaline lignin hydrogels crosslinked with epichlorohydrin were also prepared with varying pore size for controllable fractionation of lignin by the specific adsorption and filtration of lignin with polydispersed molecular weight distribution [47]. 1 More recently, Ciolacu et al [48] also mixed polyvinyl alcohol (PVA) with lignin or lignin-epoxy resins to obtain hydrogels by covalent crosslinking with epichlorohydrin.…”

Section: Lignin Hydrogels By Chemical Interactionmentioning

confidence: 99%

Lignin-Based Hydrogels: Synthesis and Applications

et al. 2020

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Polymers obtained from biomass are an interesting alternative to petro-based polymers due to their low cost of production, biocompatibility, and biodegradability. This is the case of lignin, which is the second most abundant biopolymer in plants. As a consequence, the exploitation of lignin for the production of new materials with improved properties is currently considered as one of the main challenging issues, especially for the paper industry. Regarding its chemical structure, lignin is a crosslinked polymer that contains many functional hydrophilic and active groups, such as hydroxyls, carbonyls and methoxyls, which provides a great potential to be employed in the synthesis of biodegradable hydrogels, materials that are recognized for their interesting applicability in biomedicine, soil and water treatment, and agriculture, among others. This work describes the main methods for the preparation of lignin-based hydrogels reported in the last years, based on the chemical and/or physical interaction with polymers widely used in hydrogels formulations. Furthermore, herein are also reviewed the current applications of lignin hydrogels as stimuli-responsive materials, flexible supercapacitors, and wearable electronics for biomedical and water remediation applications.

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A lignin-containing cellulose hydrogel for lignin fractionation

Abstract: A novel lignin-containing hydrogel-assisted technology offers a promising green approach for lignin fractionation.

Cited by 99 publications

References 35 publications

Biomass Fractionation and Lignin Fractionation towards Lignin Valorization

Biomass Fractionation and Lignin Fractionation towards Lignin Valorization

Durable Photoetching Magnetic Biomass‐Based Hydrogel with High Performance

Lignin-Based Hydrogels: Synthesis and Applications

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