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Topic Review
Antibacterial Activity of Chitosan and Its Derivatives
This research illuminates the various methods of chitosan extraction, its antibacterial properties, and its multifarious applications in diverse sectors. The choice of method is dictated by multiple variables, including the desired properties of chitosan, resource availability, cost, and environmental footprint.
  • 323
  • 21 Sep 2023
Topic Review
Anthocyanin-Based Polymers for Healthcare Applications
Anthocyanins are a specific group of molecules found in nature that have recently received increasing attention due to their interesting biological and colorimetric properties that have been successfully applied in several fields such as food preservation and biomedicine. Meanwhile, the incorporation of anthocyanins into polymeric systems has become an interesting strategy to widen the applicability of these molecules and develop new smart and functional polymers in the above-cited areas. 
  • 403
  • 14 Mar 2024
Topic Review
Anion Exchange Membranes with Inorganic Fillers
Anion exchange membrane fuel cells (AEMFC) are clean energy conversion devices that are an attractive alternative to the more common proton exchange membrane fuel cells (PEMFCs), because they present, among others, the advantage of not using noble metals like platinum as catalysts for the oxygen reduction reaction. The AEMs are the central element of many technologically relevant devices, first and foremost alkaline membrane fuel cells (FC). These fuel cells can significantly reduce the amount of noble metal catalysts for the oxygen reduction reaction (ORR) and may represent the future of FC development.
  • 1.0K
  • 29 Nov 2021
Topic Review
Aloe vera
Aloe vera plant offers a sustainable solution for the removal of various pollutants from water. Due to its chemical composition, Aloe vera has been explored as coagulant/flocculant and biosorbent for water treatment. 
  • 3.8K
  • 23 Jun 2021
Topic Review
Alkylimidazoles
Alkylimidazoles have good complexing properties, also they are  cheap so can be successfully used in the separation of metal ions from aqueous solutions.
  • 1.9K
  • 16 Dec 2020
Topic Review
Aliphatic Polyesters by ADMET Polymerization and Hydrogenation
The recent developments of the synthesis of bio-based long-chain aliphatic polyesters by the acyclic diene metathesis (ADMET) polymerization of α,ω-dienes, derived from plant oils and bio-based chemicals, like bis(10-undecenoate) with isosorbide, using ruthenium-carbene catalysts. The development of subsequent (one-pot) tandem hydrogenation produced saturated polyesters under mild conditions.
  • 270
  • 06 Feb 2024
Topic Review
Alginate Microparticles for Food, Pharmaceutical and Cosmetic Applications
Alginates are the most widely used natural polymers in the pharmaceutical, food and cosmetic industries. Usually, they are applied as a thickening, gel-forming and stabilizing agent. Moreover, the alginate-based formulations such as matrices, membranes, nanospheres or microcapsules are often used as delivery systems. Alginate microparticles (AMP) are biocompatible, biodegradable and nontoxic carriers, applied to encapsulate hydrophilic active substances, including probiotics.
  • 699
  • 21 Oct 2022
Topic Review
Agricultural Applications of Superabsorbent Polymer Hydrogels
Although natural polymers, such as various polysaccharides, have undoubted advantages related to their biocompatibility, biodegradability, and low cost, they are inferior to synthetic polymers in terms of water absorption and water retention properties. In this regard, the most promising are semi-synthetic polymeric superabsorbents based on natural polymers modified with additives or grafted chains of synthetic polymers, which can combine the advantages of natural and synthetic polymeric hydrogels without their disadvantages. Such semi-synthetic polymers are of great interest for agricultural applications, especially in dry regions, also because they can be used to create systems for the slow release of nutrients into the soil, which are necessary to increase crop yields using environmentally friendly technologies.
  • 943
  • 02 Mar 2023
Topic Review
Aging Performance of Polymer-Modified Binders
The term “aging of polymer-modified binder”, as well as the term “bitumen aging” in a generalized form, combines the whole set of reversible and irreversible changes in its chemical composition, physical transformations, and changes in structural and mechanical properties occurring during the production of polymer-modified binders, its storage/transportation, technological processing, and operation, i.e., during the entire lifecycle of the polymer-modified binder. Polymer-modified binders are complex multicomponent systems in which polymer and other additives, if available, make a significant contribution to the aging process.
  • 216
  • 15 Dec 2023
Topic Review
Aggregation-Induced Emission Properties in Polymers
Aggregation-Induced Emission (AIE) is a phenomenon that consists of the appearance of fluorescence in solid state or aggregation greater than that of molecules in solution and has recently attracted the attention of the scientific community because of their potential applications in different fields. Compared to small molecules, little attention has been paid to polymers and oligomers that exhibit AIE, despite having excellent properties such as high emission efficiency in aggregate and solid states, signal amplification effect, good processability and the availability of multiple functionalization sites. In addition to these features, if the molecular structure is fully conjugated, intramolecular electronic interactions between the composing chromophores may appear, thus giving rise to a wealth of new photophysical properties. In this review, we focus on selected fully conjugated oligomers, dendrimers and polymers, and briefly summarize their synthetic routes, fluorescence properties and potential applications. An exhaustive comparison between spectroscopic results in solution and aggregates or in solid state has been collected in almost all examples, and an opinion on the future direction of the field is briefly stated.
  • 753
  • 02 Feb 2021
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