This review critically addresses the most relevant and innovative techniques for obtaining polymers from tannins.

The enzymatic polymerization of biomass-derived polyphenols presents a sustainable approach to producing advanced materials. However, the structural diversity and incomplete characterization tannins pose challenges optimizing process. This study investigates how tannin composition presence phenolic non-phenolic compounds in aqueous Pinus radiata bark extracts influence laccase-catalyzed resulting material’s thermal properties. were characterized using proximate ultimate analysis, Py-GC/MS,...

Nanocomposite polymers have received considerable interest in research for the last three decades. Those nanocomposite that are sensitive to a stimulus such as pH, temperature, magnetism, and electricity, among others, called smart or intelligent had even greater attention due their potential technological applications. Applications of these include flexible electronic devices, sensors, self-healing polymers, shape-memory materials, etc. The sensitivity material can come from both polymer...

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTMicrocystins Detection Methods: A Focus on Recent Advances Using Molecularly Imprinted PolymersYadiris García*Yadiris GarcíaDepartamento de Química Analítica e Inorgánica Facultad Ciencias Químicas, Universidad Concepción, Casilla 160-C, 4030000 Chile*Email: [email protected]More by Yadiris GarcíaView Biographyhttps://orcid.org/0000-0002-9998-6601, Myleidi VeraMyleidi VeraDepartamento Polímeros, ChileMore VeraView Biography, Juan D. GiraldoJuan...

Abstract The valorization of tannins from forest by‐products is a major opportunity for the sustainable development forestry industry. Herein we report laccase‐mediated polymerization obtained an aqueous pine bark extract. reaction was conducted under oxygen atmosphere at 50°C 60 min and followed by UV–Vis, fluorescence intensity, phenol content, viscosity measurements. An insoluble polymer after 45 min, which attributed to coupling reactions triggered phenoxyl radicals within mixture....

The laccase enzymes of Agaricus bisporus and Trametes versicolor were successfully covalently co-immobilized on poly(glycidyl methacrylate) microspheres. enzyme load reached after the co-immobilization both was 6.75 U g−1 carrier. resulting biocatalyst showed combined properties immobilized enzymes, increasing their optimum pH temperature ranges. storage operational stabilities also improved co-immobilization. In presence mediator (ABTS) organophosphate pesticide diazinon 100% biodegraded 48...

Abstract Over the last decades, presence of highly organic pollutants has increased and become an environmental problem that affects all forms life. To solve or reduce this problem, multiple strategies have been proposed for elimination degradation compounds in aqueous media. This review aims to revise critically discuss most recent advances polymer supports be used adsorption pollutants. However, greatest challenge with respect issue is industrial scale‐up bioremediation processes allow...

Antibiotic determination at low concentrations is a critical challenge to ensure water, food, and environmental safety. This work reports the application of molecularly imprinted nanoparticles (MINs) as synthetic antibodies in microplate assay for tetracycline (TC) subnanomolar levels. MINs with hydrodynamic radii ranging from 200 300 nm were synthesized via solid-phase imprinting on magnetic using lymecycline (LMC) an auxiliary template. immobilized onto polystyrene microplates exhibited...

ABSTRACT Laccase enzymes are multicopper oxidases capable of oxidizing different compounds. However, to be able use this biocatalyst for industrial applications, their immobilization is needed. The present work investigates the Myceliophthora thermophila laccase (MtL) on monodisperse microspheres poly(glycidyl methacrylate) (PGMA) used in azinphos‐methyl degradation. was optimized achieve highest activity immobilized enzyme. As result, protein load obtained 2.5 mg g −1 carrier (35 U...

ABSTRACT Enzymatic immobilization is a versatile alternative to improve enzyme stability and enable its reuse. In this study, the change in immobilized properties due type of functional group on carrier was evaluated. For that, monodisperse polymeric microspheres with two groups widely used laccase immobilization—oxirane [poly(glycidyl methacrylate) (PGMA)] hydrazide—were synthesized by dispersion polymerization covalently immobilize Trametes versicolor . Using response surface methodology,...

New cellulose porous layers, with capacity to transport and retain boron from aqueous solution, were developed via interpenetrating polymer network (IPNs). These systems made assemble mimetic of plant root tissue for the study available transport. For that layers supported on polypropylene matrix used as primary formation IPN. A vinyl monomer, (4-vinylbenzyl)-N-methyl-d-glucamine (VbNMDG), was synthesized at three concentration levels ultrafiltration membranes modified by in situ...

The presence of organic dyes in wastewater is a problem growing interest due to its effect on the environment and human health. aim this work was obtain magnetic hydrogels methacrylated gelatin-g-polyelectrolyte be used for removal methylene blue (MB) as model contaminant dye. Grafted gelatins with two degrees functionalization (48% 76%) were obtained subsequently crosslinked using 2-acrylamido-2-methyl-1-propansulfonic acid (AMPS) sodium 4-vinylbenzenesulfonate (SSNa) monomers. Magnetic...

Abstract Laccase enzymes of were covalently coimmobilized on poly(glycidyl methacrylate) microspheres. The objective this work was to create a biocatalyst that works efficiently in wide range pH. coimmobilization performed using two different strategies compare the most efficient. results showed by correctly selecting and concentrations involved commobilization, it is possible obtain at pH (2.0–7.0). maximum activity values reached per gram support for obtained 41.90 U (pH 3.0), 40.89 4.0),...

Water availability, a vital factor in agriculture, is being threatened by shortages caused droughts, desertification, and climate change. In this context, hydrogels, polymers with high water absorption retention capacity, emerge as key solutions to improve use efficiency irrigation. This study investigated the effect of natural superabsorbent hydrogel (TG) at different concentrations (0.3%, 0.5%, 0.8%, 1.0%) on capacity three coarse-textured soils one medium-textured soil. Results are...

Abstract The applications of functional polymers to different research fields have been increasing. An especially important application is the use polymer‐based sensors for chromogenic detection compounds environmental interest in water. Polymer matrix supports developed improve sensing capacity and performance sensors. Therefore, area sensor design manufacturing pollutant increasingly interesting many scientific communities ranging from biological chemical sciences engineering. This subject...

Microcystins (MCs) are highly toxic peptides produced by cyanobacteria during algal blooms. Microcystin-leucine-arginine (MC-LR) is the most and common MC variant with major effects on human animal health upon exposure. MC-LR detection has become critical to ensure water safety, therefore robust reliable analytical methods needed. This work reports development of a simple optimized Molecularly Imprinted Nanoparticle-Based Assay (MINA) for in water. Nanoparticles (MINs) were prepared...

Abstract The properties of macroscopic polymer nanocomposites are highly dependent on the nanoparticle–polymer interfacial region, which varies with morphology nanoparticles. Herein, we used TiO 2 nanofillers very low aspect ratio, same chemical composition, and surface functions, but different geometries (nanospheres nanoplates) dispersed in a poly(acrylic acid) matrix to analyze influence nanoparticle geometry nanocomposite hydrogels. was found affect swelling rheological polymers....