Sustainable dressings for wound healing

Deleted Journal, Год журнала: 2025, Номер 2(1)

Опубликована: Янв. 2, 2025

Abstract The field of chronic wound care has been rapidly evolving. With a market size for wounds in billions USD, this is not an insignificant area to encourage more sustainable practices and processes. sourcing starting materials dressings from renewable resources the first crucial step ensuring that environmental impact minimized. Next important choice select methodologies accordance with principles green chemistry. This involves utilizing solvents as reaction media chemical processes preparing dressing materials. In many cases, like production hydrogels, crosslinking reagents are often employed. These can be, general, easily replaced by enzymes peroxidases, tyrosinases sortases. Process intensification strategies have emerged powerful approach ensure economy sustainability at large scale. Use microwave radiations ultrasonication instead heat accelerate rates helps cases inject wounds. review attempts highlight ongoing efforts future possibilities development cost-effective methods. Graphical

Язык: Английский

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Supramolecular Organic Nanofiller: A New Reinforcement Strategy for Dynamic Covalent Polymer Networks Toward Upcycling of Carbon Fiber Composites

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Abstract Dynamic covalent polymer networks (DCPN) provide an important solution to the challenging recyclability of thermoset elastomers. However, dynamic bonds exhibit relatively weak bond energies, considerably decreasing mechanical properties DCPN. Herein, a novel reinforcement strategy for DCPN involving in situ formation supramolecular organic nanofillers through asynchronous polymerization is proposed. Owing difference reactivity isocyanate groups and gradual deblocking aldimine, cross‐linking hexamethylene diisocyanate isocyanate‐terminated prepolymer containing oxime–urethane with deblocked tris(2‐aminoethyl)amine facilitates transition from molecular interpenetration chains into immiscible polymerization. This results thermodynamic incompatibility between hyperbranched clusters long chains, inducing spontaneous nanofillers. Compared traditional strategies, improve Furthermore, interactions enable network excellent recyclability. The unique prepared allow their combination carbon fibers (CF) form CF composites outstanding personal‐protection applications, achieving composite upcycling. study offers on upcycling high‐performance composites.

Язык: Английский

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Double-Sided Pressure-Sensitive Adhesive Materials under Human-Centric Extreme Environments

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(36), С. 48257 - 48268

Опубликована: Сен. 2, 2024

Maintaining the adhesion strength of flexible pressure-sensitive adhesives (PSAs) is crucial for advanced applications, such as health monitoring. Sustainable mounting critical wearable sensor devices, especially under challenging surroundings low and high temperatures (e.g., polar regions or deserts), underwater sweat environments (physical activity), cyclical shear complex stresses. In this article, we consider adhesive, mechanical, optical properties medical-grade double-sided PSAs by simulating extreme human-centric environments. Diverse temperature conditions, water humidity exposures, loads were selected tested over long intervals, up to 28 days. We observed that increased due pore closing expanding contact area between adhesive layer substrate. Conversely, caused layers harden reduce strength. Immersion in salty weakly acidic excessive reduced interfered with interfacial interactions. PSA films showed either cohesive failure mechanical stresses loading, which also affected presence various solvents. demonstrated variable performance, properties, transparency materials can be directly related changes their morphologies, surface roughness, swelling state, alternation area, helping establish broader rules design human monitoring sensors long-term application sensors, electrodes.

Язык: Английский

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Recent Advances on Starch-Based Adsorbents for Heavy Metal and Emerging Pollutant Remediation

Polymers, Год журнала: 2024, Номер 17(1), С. 15 - 15

Опубликована: Дек. 25, 2024

Starch is one of the most abundant polysaccharides in nature and has a high potential for application several fields, including effluent treatment as an adsorbent. unique structure, with zones different crystallinity glycosidic structure containing hydroxyl groups. This configuration allows wide range interactions pollutants degrees hydrophilicity, which includes from hydrogen bonding to hydrophobic interactions. review article aims survey use starch synthesis diverse adsorbents, forms nanoparticles blends, evaluates their performance terms amount pollutant adsorbed removal efficiency. A critical analysis materials developed, results obtained also presented. Finally, provides outlook on how this polysaccharide can be used more effectively efficiently remediation efforts near future.

Язык: Английский

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Ultra-Strong, Humidity-Tolerant Thermoset Based on Dynamic Covalent Bond Integration Strategy via Boron−Nitrogen Bidentate Coordination

Macromolecules, Год журнала: 2025, Номер unknown

Опубликована: Янв. 27, 2025

Язык: Английский

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Interparticle Crosslinked Ion-responsive Microgels for 3D and 4D (Bio)printing Applications

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Abstract Microgels offer unique advantages over bulk hydrogels due to their improved diffusion limits for oxygen and nutrients. Particularly, stimuli-responsive microgels with inherently bioactive self-supporting properties emerge as highly promising biomaterials. This study unveils the development of interparticle-crosslinked, self-supporting, ion-responsive tailored 3D 4D (bio)printing applications. A novel strategy was proposed develop that enabled interparticle crosslinking, eliminating need filler preserving essential microscale void spaces support cell migration vascularization. Additionally, these possessed unique, shrinking behavior primarily by Hofmeister effect, reversible upon removal stimulus. Two types microgels, spherical (µS) random-shaped (µR), were fabricated, µR exhibiting superior mechanical higher packing density. Fabricated microgel-based constructs supported angiogenesis tunable vessel size based on interstitial while demonstrating excellent shear-thinning self-healing high print fidelity. Various bioprinting techniques employed validated using including extrusion-based, embedded, intraembedded, aspiration-assisted bioprinting, facilitating biofabrication scalable constructs. Multi-material printing achieved combining non-responsive enabling programmable shape transformations exposure ionic solutions. Utilizing printing, complex, dynamic structures generated such coiling filaments, grippers, folding sheets, providing a foundation advanced tissue models devices regenerative medicine soft robotics, respectively.

Язык: Английский

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Flexible, Recyclable, and Highly Conductive Self‐Healing Polymer‐Based Phase Change Films for Thermal Management

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 7, 2025

Abstract Phase change materials (PCMs) hold significant promise for thermal energy storage and management. However, challenges such as low conductivity, liquid leakage, solid rigidity, poor recyclability hinder their practical applications. Herein, a facile yet effective strategy fabricating highly conductive, flexible, recyclable polymer‐based phase composites (PCCs) is proposed. The physically crosslinked dual polymer networks endow the PCC film with excellent latent heat (158.6 J g −1 ), tunable mechanical stress (3.95–8.59 MPa), thermal‐regenerating capability, utilization. By utilizing shear‐induced alignment of graphite nanoplatelets (GNPs), proposed films demonstrate remarkable conductivity 6.24 W m K at GNP loading 10 wt.%, achieving enhancement efficiency 302%. Moreover, flexible PCCs‐based device demonstrates regulation in electronic devices wearable This work provides cost‐effective avenue scalable fabrication thermally PCCs toward various management

Язык: Английский

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Dynamical networking using Gaussian fields

The European Physical Journal E, Год журнала: 2025, Номер 48(4-5)

Опубликована: Май 1, 2025

Abstract A novel field theoretical approach towards modelling dynamic networking in complex systems is presented. An equilibrium formalism which utilises Gaussian fields adapted to model the dynamics of particles that can bind and unbind from one another. Here, refers introduction instantaneous co-localisation constraints does not necessitate formation a well-defined transient or persistent network. By combining this with Martin–Siggia–Rose generating functionals, weighted functional for networked system obtained. The introduces spatial temporal into Langevin dynamics, via statistical weights, thereby accounting all possible configurations be simple example Brownian another demonstrates tool leads results physical quantities collective description. Applying cross-linking polymers mixture, we calculate average number instances. As expected, structure factors each type polymer show collapses once introduced, but addition repulsive time-dependent potential above minimum strength prevents this. examples presented paper indicate could applied range synthetic biological obtain predictions experimentally verifiable quantities. Graphic abstract

Язык: Английский

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Depolymerizable Thermosetting Dielectric Elastomers Toughened by Sacrificial Hydrogen Bonds for Sustainable Capacitive Strain‐Sensor

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract The development of sustainable capacitive strain‐sensors necessitates dielectric elastomers that integrate mechanical robustness and closed‐loop recyclability. Herein, a self‐healing thermosetting elastomer (PIT) is designed simultaneously achieves depolymerizability high toughness through dual‐crosslinking architecture combining triazine‐based dynamic covalent linkages supramolecular hydrogen bonds. nucleophilic aromatic substitution enables chemical recycling, while the sacrificial bonding dissipates energy to enhance toughness. electron‐deficient triazine structure confers enhanced properties (κ = 5.94 at 100 kHz), surpassing common silicone‐based counterparts (e.g., silicon rubber, κ<3). Capitalizing on these attributes, recyclable strain sensor pioneered by assembling PIT with liquid metal electrodes. device demonstrates superior performance metrics, including broad detection range (1%‐250% strain) sensitivity (gauge factor 0.98), reliability (>500 cycles), full‐component Real‐time human motion monitoring validates practical functionality, controlled depolymerization regenerates pristine materials for re‐fabrication. This work presents material design paradigm manufacturing strategy eco‐conscious flexible electronics.

Язык: Английский

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Physical crosslinking of hydrogels: The potential of dynamic and reversible bonds in burn care

Coordination Chemistry Reviews, Год журнала: 2025, Номер 542, С. 216868 - 216868

Опубликована: Июнь 6, 2025

Язык: Английский

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