Functional Materials from Paper Wastes: II–Cellulose Hydrogels with High Water Retention Capacity Obtained from Solutions of Waste Paper in DMAc/LiCl

Михаилиди, А. М.; Kotel’nikova, N. Ye.

doi:10.1134/s1068162022070172

Cited by 3 publications

(11 citation statements)

References 27 publications

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“…They are also water-saturated (moist), soft, smooth, transparent, and colorless substances [ 58 , 63 ]; however, the color and transparency may be different depending on the initial cellulosic material ( Figure 3 a). For example, hydrogels obtained from cotton microcrystalline cellulose (MCC) are white-colored, hydrogels from flax cellulose perform sandy-beige color, and both are completely opaque, while cellulose hydrogels fabricated from waste paper are colorless or yellow, grey, light-brown and were either transparent or semi-clouded [ 34 , 64 ].…”

Section: Physical Propertiesmentioning

confidence: 99%

“…Another example of the chemical contamination of the ready hydrogels is those produced from waste paper via dissolution in DMAc/LiCl. The hydrogels contained traces of inorganic impurities from additives and ink in the initial paper, but their amount was much less than in the original samples of waste paper [ 34 ]. The complete removal of inorganic inclusions from the waste paper solution seems unlikely to happen, so a share of contaminants will be present in the finished hydrogel.…”

Section: Chemical Propertiesmentioning

confidence: 99%

“…Freeze-drying of the hydrogels, which is most commonly used for the storage of the hydrogels or to obtain a solid, highly porous structure, resulted in a change in the crystallographic structure of cellulose. The reflections in the XRD profiles corresponded to the structural modification of cellulose II [ 34 , 67 , 87 ].…”

Section: Chemical Propertiesmentioning

confidence: 99%

“… Bacteria and microorganisms: cellulose-producing bacteria and microorganisms, for instance, Acetobacter xylinum , can be used to produce cellulose through fermentation processes [ 33 ]. Waste paper is another significant source of cellulose [ 34 ]. However, compared to other sources, waste paper may require additional extraction steps due to its heterogeneous composition and impurities resulting from the papermaking process.…”

Section: Introductionmentioning

confidence: 99%

“…Waste paper is another significant source of cellulose [ 34 ]. However, compared to other sources, waste paper may require additional extraction steps due to its heterogeneous composition and impurities resulting from the papermaking process.…”

Section: Introductionmentioning

confidence: 99%

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Cellulose-Based Metallogels—Part 2: Physico-Chemical Properties and Biological Stability

Mikhailidi,

Volf,

Belosinschi

et al. 2023

Gels

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Metallogels represent a class of composite materials in which a metal can be a part of the gel network as a coordinated ion, act as a cross-linker, or be incorporated as metal nanoparticles in the gel matrix. Cellulose is a natural polymer that has a set of beneficial ecological, economic, and other properties that make it sustainable: wide availability, renewability of raw materials, low-cost, biocompatibility, and biodegradability. That is why metallogels based on cellulose hydrogels and additionally enriched with new properties delivered by metals offer exciting opportunities for advanced biomaterials. Cellulosic metallogels can be either transparent or opaque, which is determined by the nature of the raw materials for the hydrogel and the metal content in the metallogel. They also exhibit a variety of colors depending on the type of metal or its compounds. Due to the introduction of metals, the mechanical strength, thermal stability, and swelling ability of cellulosic materials are improved; however, in certain conditions, metal nanoparticles can deteriorate these characteristics. The embedding of metal into the hydrogel generally does not alter the supramolecular structure of the cellulose matrix, but the crystallinity index changes after decoration with metal particles. Metallogels containing silver (0), gold (0), and Zn(II) reveal antimicrobial and antiviral properties; in some cases, promotion of cell activity and proliferation are reported. The pore system of cellulose-based metallogels allows for a prolonged biocidal effect. Thus, the incorporation of metals into cellulose-based gels introduces unique properties and functionalities of this material.

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Section: Physical Propertiesmentioning

confidence: 99%

Section: Chemical Propertiesmentioning

confidence: 99%

Section: Chemical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cellulose-Based Metallogels—Part 2: Physico-Chemical Properties and Biological Stability

Mikhailidi,

Volf,

Belosinschi

et al. 2023

Gels

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Advancing sustainable molded packaging: Integrating silica aerogel into recycled paper pulp for the fabrication of thermally and mechanically stable superhydrophobic composites

Singh,

Itkor,

Lee

et al. 2024

Industrial Crops and Products

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Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation

Михаилиди

Volf

Belosinschi

et al. 2023

Gels

View full text Add to dashboard Cite

Metallogels are a class of materials produced by the complexation of polymer gels with metal ions that can form coordination bonds with the functional groups of the gel. Hydrogels with metal phases attract special attention due to the numerous possibilities for functionalization. Cellulose is preferable for the production of hydrogels from economic, ecological, physical, chemical, and biological points of view since it is inexpensive, renewable, versatile, non-toxic, reveals high mechanical and thermal stability, has a porous structure, an imposing number of reactive OH groups, and good biocompatibility. Due to the poor solubility of natural cellulose, the hydrogels are commonly produced from cellulose derivatives that require multiple chemical manipulations. However, there is a number of techniques of hydrogel preparation via dissolution and regeneration of non-derivatized cellulose of various origins. Thus, hydrogels can be produced from plant-derived cellulose, lignocellulose and cellulose wastes, including agricultural, food and paper wastes. The advantages and limitations of using solvents are discussed in this review with regard to the possibility of industrial scaling up. Metallogels are often formed on the basis of ready-made hydrogels, which is why the choice of an adequate solvent is important for obtaining desirable results. The methods of the preparation of cellulose metallogels with d-transition metals in the present state of the art are reviewed.

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Functional Materials from Paper Wastes: II–Cellulose Hydrogels with High Water Retention Capacity Obtained from Solutions of Waste Paper in DMAc/LiCl

Cited by 3 publications

References 27 publications

Cellulose-Based Metallogels—Part 2: Physico-Chemical Properties and Biological Stability

Cellulose-Based Metallogels—Part 2: Physico-Chemical Properties and Biological Stability

Advancing sustainable molded packaging: Integrating silica aerogel into recycled paper pulp for the fabrication of thermally and mechanically stable superhydrophobic composites

Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation

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