Design of Functional Polymer Systems to Optimize the Filler Retention in Obtaining Cellulosic Substrates with Improved Properties

Ungureanu, Elena; Fortună, Maria Emiliana; Țopa, Denis; Lobiuc, Andrei; Ungureanu, Ovidiu C.; Jitareanu, Doina Carmenica

doi:10.3390/ma16051904

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…Despite their high swelling ability, some superabsorbent polymers exhibit low water retention capacity, resulting in a rapid release. To enhance this characteristic, various fillers can be utilized, and the degree of crosslinking and monomer content can also help to control the release of water [ 34 ]. As an illustration, the incorporation of halloysite nanotubes can extend the water release duration to 30 days for a synthetic superabsorbent polymer obtained through the copolymerization of acrylamide, 2-acrylamido-2-methylpropane-1-sulfonic acid, and acrylic acid [ 24 ].…”

Section: Water Storage: a Superpower Of Hydrogelsmentioning

confidence: 99%

Agriculture 4.0: Polymer Hydrogels as Delivery Agents of Active Ingredients

Mikhailidi,

Ungureanu,

Tofanica

et al. 2024

Gels

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The evolution from conventional to modern agricultural practices, characterized by Agriculture 4.0 principles such as the application of innovative materials, smart water, and nutrition management, addresses the present-day challenges of food supply. In this context, polymer hydrogels have become a promising material for enhancing agricultural productivity due to their ability to retain and then release water, which can help alleviate the need for frequent irrigation in dryland environments. Furthermore, the controlled release of fertilizers by the hydrogels decreases chemical overdosing risks and the environmental impact associated with the use of agrochemicals. The potential of polymer hydrogels in sustainable agriculture and farming and their impact on soil quality is revealed by their ability to deliver nutritional and protective active ingredients. Thus, the impact of hydrogels on plant growth, development, and yield was discussed. The question of which hydrogels are more suitable for agriculture—natural or synthetic—is debatable, as both have their merits and drawbacks. An analysis of polymer hydrogel life cycles in terms of their initial material has shown the advantage of bio-based hydrogels, such as cellulose, lignin, starch, alginate, chitosan, and their derivatives and hybrids, aligning with sustainable practices and reducing dependence on non-renewable resources.

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Section: Water Storage: a Superpower Of Hydrogelsmentioning

confidence: 99%

Agriculture 4.0: Polymer Hydrogels as Delivery Agents of Active Ingredients

Mikhailidi,

Ungureanu,

Tofanica

et al. 2024

Gels

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“…The adsorption mechanisms were identified as involving electrostatic attraction and hydrogen bonding for dye adsorption, while for the adsorption process of heavy metal ions, a dominant role was played by the anionic groups of the hydrogel [142]. The presence of cellulose ethers or chitosan can further enhance the number of anionic groups, thereby augmenting the adsorption capacity towards heavy metal ions [134,[141][142][143][144][145].…”

Section: Magnetic Materialsmentioning

confidence: 99%

Cellulose-Based Metallogels—Part 3: Multifunctional Materials

Mikhailidi,

Ungureanu,

Belosinschi

et al. 2023

Gels

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The incorporation of the metal phase into cellulose hydrogels, resulting in the formation of metallogels, greatly expands their application potential by introducing new functionalities and improving their performance in various fields. The unique antiviral, antibacterial, antifungal, and anticancer properties of metal and metal oxide nanoparticles (Ag, Au, Cu, CuxOy, ZnO, Al2O3, TiO2, etc.), coupled with the biocompatibility of cellulose, allow the development of composite hydrogels with multifunctional therapeutic potential. These materials can serve as efficient carriers for controlled drug delivery, targeting specific cells or pathogens, as well as for the design of artificial tissues or wound and burn dressings. Cellulose-based metallogels can be used in the food packaging industry to provide biodegradable and biocidal materials to extend the shelf life of the goods. Metal and bimetallic nanoparticles (Au, Cu, Ni, AuAg, and AuPt) can catalyze chemical reactions, enabling composite cellulose hydrogels to be used as efficient catalysts in organic synthesis. In addition, metal-loaded hydrogels (with ZnO, TiO2, Ag, and Fe3O4 nanoparticles) can exhibit enhanced adsorption capacities for pollutants, such as dyes, heavy metal ions, and pharmaceuticals, making them valuable materials for water purification and environmental remediation. Magnetic properties imparted to metallogels by iron oxides (Fe2O3 and Fe3O4) simplify the wastewater treatment process, making it more cost-effective and environmentally friendly. The conductivity of metallogels due to Ag, TiO2, ZnO, and Al2O3 is useful for the design of various sensors. The integration of metal nanoparticles also allows the development of responsive materials, where changes in metal properties can be exploited for stimuli-responsive applications, such as controlled release systems. Overall, the introduction of metal phases augments the functionality of cellulose hydrogels, expanding their versatility for diverse applications across a broad spectrum of industries not envisaged during the initial research stages.

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“…Cellulose-based hydrogels give rise to a huge number of composite materials. They possess three-dimensional porous structures, which allow the incorporation of functional fillers and are thus applied as smart materials [16,22,[26][27][28][29][30]. The same, the use of cellulose aerogels is preferable to obtain special properties with new potential applications [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…They possess three-dimensional porous structures, which allow the incorporation of functional fillers and are thus applied as smart materials [16,22,[26][27][28][29][30]. The same, the use of cellulose aerogels is preferable to obtain special properties with new potential applications [27][28][29][30][31]. Nanocomposites based on cellulose hydrogels with metal particles have been extensively developed in recent decades.…”

Section: Introductionmentioning

confidence: 99%

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

Михаилиди

Volf

Belosinschi

et al. 2023

Gels

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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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Design of Functional Polymer Systems to Optimize the Filler Retention in Obtaining Cellulosic Substrates with Improved Properties

Cited by 7 publications

References 14 publications

Agriculture 4.0: Polymer Hydrogels as Delivery Agents of Active Ingredients

Agriculture 4.0: Polymer Hydrogels as Delivery Agents of Active Ingredients

Cellulose-Based Metallogels—Part 3: Multifunctional Materials

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

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