Shapeable and underwater super-elastic cellulose nanofiber/alginate cryogels by freezing-induced oxa-Michael reaction for efficient protein purification

Tian, Yiran; Zhang, Xufeng; Feng, Xiyun; Zhang, Jinmeng; Zhong, Tianyi

doi:10.1016/j.carbpol.2021.118498

Cited by 18 publications

(8 citation statements)

References 62 publications

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“…Cryogels formed from hydroxypropyl methylcellulose (HPMC) and bacterial cellulose nanocrystals (CNC) have shown good adsorption of organic pollutants [117]. Shapable cellulose nanofiber/alginate cryogels with underwater super-elasticity have been used for protein purification [118]. Highly porous (94.7-97.1%) light (density 0.016-0.028 g/cm 3 ) hydrophobic cellulose cryogels (unbleached long fiber of Pinus elliottii) have shown a high homogeneous sorption capacity (65.18 g/g) and heterogeneous sorption capacity (68.42 g/g) (solvent organosilane methyltrimethoxysilane) [119].…”

Section: Cellulose-based Cryogels and Their Applications In Biomedicinementioning

confidence: 99%

Cellulose Cryogels as Promising Materials for Biomedical Applications

Tyshkunova

Poshina

Skorik

2022

IJMS

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The availability, biocompatibility, non-toxicity, and ease of chemical modification make cellulose a promising natural polymer for the production of biomedical materials. Cryogelation is a relatively new and straightforward technique for producing porous light and super-macroporous cellulose materials. The production stages include dissolution of cellulose in an appropriate solvent, regeneration (coagulation) from the solution, removal of the excessive solvent, and then freezing. Subsequent freeze-drying preserves the micro- and nanostructures of the material formed during the regeneration and freezing steps. Various factors can affect the structure and properties of cellulose cryogels, including the cellulose origin, the dissolution parameters, the solvent type, and the temperature and rate of freezing, as well as the inclusion of different fillers. Adjustment of these parameters can change the morphology and properties of cellulose cryogels to impart the desired characteristics. This review discusses the structure of cellulose and its properties as a biomaterial, the strategies for cellulose dissolution, and the factors affecting the structure and properties of the formed cryogels. We focus on the advantages of the freeze-drying process, highlighting recent studies on the production and application of cellulose cryogels in biomedicine and the main cryogel quality characteristics. Finally, conclusions and prospects are presented regarding the application of cellulose cryogels in wound healing, in the regeneration of various tissues (e.g., damaged cartilage, bone tissue, and nerves), and in controlled-release drug delivery.

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Section: Cellulose-based Cryogels and Their Applications In Biomedicinementioning

confidence: 99%

Cellulose Cryogels as Promising Materials for Biomedical Applications

Tyshkunova

Poshina

Skorik

2022

IJMS

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“…The wider peak and lower wave number indicate that the stronger hydrogen bond interaction in SA. [35] The strong peak of stretching vibration of C=O in À COO À also changes into two adsorption peaks at 1595 and 1411 cm À 1 , which can be considered as the in-and out-plane stretching. [36] Moreover, the strong and sharp absorption peak at 1031 cm À 1 belongs to the stretching vibration of alcohol C-O.…”

Section: Resultsmentioning

confidence: 99%

Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate

Chen

et al. 2022

ChemistrySelect

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The acid-modified sodium alginate (AMSA) was synthesized utilizing a simple acidification method and its synthesis was confirmed by acid-base titration method, SEM, XRD, FTIR, TGA and BET. The sodium alginate after acidification, with a large number of carboxyl groups introduced, was favorable to the adsorption of methylene blue (MB) from water. The maximum adsorption capacity calculated by Langmuir model was up to 1593 mg/g, which was significantly higher than the adsorption capacity of other adsorbents reported. The adsorption rate of MB by AMSA was very fast. After the addition of adsorbent, the adsorption removal rate reached 79 % in 30 min, and the adsorption was balanced in 120 min (94 % of MB was removed). Furthermore, electrostatic interaction and hydrogen bonding, pore-filling and chemisorption were considered as the main adsorption mechanisms. AMSA is expected to be an optimal candidate for efficient and rapid removal of MB due to its simple synthesis, abundant sources, easy separation and no secondary pollution.

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“…The density ( ρ ) of the aerogel was calculated as follows [ 26 ]: ρ = W d / V where W d (g) is the mass of aerogels and V is the volume of aerogels. The volume was calculated with the diameter of the spherical aerogels.…”

Section: Methodsmentioning

confidence: 99%

Composite Aerogel Comprised of Sodium Alginate and Bentonite via Supercritical CO2 Drying: An Efficient Adsorbent for Lysozyme

Zhao

Cao

Yang

2022

Gels

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To meet the demand for the separation of specific substances, the construction of porous composite aerogels with a high specific surface area and a strong adsorption capacity is still a challenge. Herein, a sodium alginate/bentonite composite aerogel was efficiently prepared through supercritical fluid drying. The aerogel’s volume shrank less during supercritical drying, maintaining its original three-dimensional mesh structure. The resulting aerogel had a large specific surface area (445 m2/g), a low density (0.059 g/cm3), and a large pore volume (3.617 cm3/g). Due to the fixation and intercalation effects, bentonite was uniformly dispersed in the sodium alginate matrixes. The adsorption of lysozyme by the composite aerogel was evaluated, and the results showed that the optimal adsorption pH was 8 when the pH of the phosphoric acid buffer solution was between pH = 5 and 8.5. The time for adsorption to reach equilibrium was 8 h. The adsorption capacity increased with the increase in bentonite content, and when the initial concentration of lysozyme was from 0.2 to 1.2 g/L, the adsorption capacity first increased and then stabilized, and the maximum adsorption amount was 697 mg/g. The adsorption behavior was simulated in the isothermal region, and the linear correlation coefficient of Langmuir isothermal adsorption fitting was found to be 0.997. Thus, this composite aerogel with strong adsorption capacity can be used as a good alternative to enzymatic adsorbents or immobilized materials.

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Shapeable and underwater super-elastic cellulose nanofiber/alginate cryogels by freezing-induced oxa-Michael reaction for efficient protein purification

Cited by 18 publications

References 62 publications

Cellulose Cryogels as Promising Materials for Biomedical Applications

Cellulose Cryogels as Promising Materials for Biomedical Applications

Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate

Composite Aerogel Comprised of Sodium Alginate and Bentonite via Supercritical CO2 Drying: An Efficient Adsorbent for Lysozyme

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