Polysaccharide-Based Hydrogels for Advanced Biomedical Engineering Applications

ACS Polymers Au, Journal Year: 2024, Volume and Issue: 4(6), P. 463 - 486

Published: Aug. 20, 2024

In recent years, numerous applications of hydrogels using polysaccharides have evolved, benefiting from their widespread availability, excellent biodegradability, biocompatibility, and nonpoisonous nature. These natural polymers are typically sourced renewable materials or manufacturing processes, contributing collaboratively to waste management demonstrating the potential for enhanced enduring sustainability. field novel bioactive molecule carriers biotherapeutics, attracting attention due inherent properties adaptable chemical structures. offer versatile matrices with a range architectures mechanical properties, while retaining bioactivity incorporated biomolecules. However, conventional polysaccharide-based suffer inadequate toughness large swelling which prohibit efficacy in real-world applications. This review offers insights into latest advancements development diverse biotherapeutic administrations, either standalone conjunction other drug delivery systems, pharmaceutical biomedical fields.

Language: Английский

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Toxicity of stereolithography 3D printed objects at the chemical level and strategies to improve biocompatibility

Additive manufacturing, Journal Year: 2025, Volume and Issue: unknown, P. 104715 - 104715

Published: Feb. 1, 2025

Language: Английский

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Direct ink writing of polymer‐based materials—A review

Polymer Engineering and Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 2, 2024

Abstract Additive manufacturing (AM) is widely recognized for its flexibility, structural complexity, customizability, and sustainability. Within the realm of AM technology, direct ink writing (DIW) stand out due to material diversity, high resolution, capacity free‐form design. It enjoys widespread applications in biomedicine engineering, making it a key advanced method crafting design‐free, multifunctional, stable items. Herein, review DIW polymer‐based materials presented. starts with an overview various fillers polymer composites, followed by in‐depth discussion diverse methods customizing across different classes. Subsequently, delves into emerging materials, encompassing their utility biology, electrical energy storage, electronics, robotics. Finally, addresses current challenges prospects associated DIW, aiming elucidate potential pathways future innovations. Highlights one most popular techniques 3D printing. Describes application recent years. Outlines advances hydrogels, 4D myriad materials. Discusses outlooks provide guidance future.

Language: Английский

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Preparation of short carbon fiber reinforced photosensitive resin and composite material properties study

Polymer Engineering and Science, Journal Year: 2024, Volume and Issue: 64(10), P. 4890 - 4903

Published: July 23, 2024

Abstract Light‐curing rapid prototyping (SLA) has become an emerging technology in the manufacturing industry because of its high precision, prototyping, and ability to mold complex parts. To enhance mechanical properties thermal stability raw material photosensitive resin (PR), carbon fiber (CF) was surface modified by chemical oxidation grafting amino silane (KH550) obtain KH550‐modified (ACF). Then, ACF composited with fiber/photosensitive (ACF/PR) composites. The viscosities ACF/PR composites, including viscosity, curing shrinkage, properties, were characterized. results showed that KH550 successfully grafted onto CF. When addition composites 0.6%, tensile strength, elongation at break, impact strength reached 39.48 MPa, 20.32%, 13.62 kJ/m 2 , which 120%, 27.15%, 154% higher than pure resin; decomposition temperatures maximum 50% mass loss increased 457.66°C 442.44°C loss, is 3.95% 3.63% resin. Currently, have excellent toughness, stability. This paper gives a cost‐efficient method for improving functioning PR. Highlights Mixed acid modification CFs. Preparation CF/photosensitive Composites

Language: Английский

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Trapping crystallinity in highly crosslinked thermosets by light-based 3D printing from the liquid crystalline phase

Published: Nov. 27, 2024

We propel photopolymerizable liquid crystalline (LC) shape memory materials from solely elastomeric performance to the thermomechanical of tough, yielding thermosets. LC elastomers are at forefront smart, stimuli-responsive development. To apply their properties mechanically superior thermosets, we demonstrate main-chain incorporation high quantities preordered motifs into a densely crosslinked network via thiol-ene photopolymerization achieve new material class hybridizing advantages and networks. A terminal alkene mesogen with robust phase is combined multiple trithiol comonomers selected based on resulting polymer crystallinities (13-37%). The bulk exhibit strength, stiffness pronounced under stress elongations around 200%. Their excellent were explained by separation observed in atomic force microscopy. Furthermore, these fast, near-perfect imprinting (99%) recovery (97%) over least 20 cycles, light-based 3D printing temperature.

Language: Английский

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Design and Depolymerization of Bis(2‐hydroxyethyl) Terephthalate‐Containing Polyurethanes for Vat Photopolymerization

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 9, 2024

Abstract Vat photopolymerization (VPP) of highly aromatic polyurethanes (PUs) expands the library additive manufacturing (AM) materials and enables a vast array ductile thermoplastics, rigid flexible thermosets, elastomers. Aromatic diisocyanates various diols enable printing rigid, cross‐linked parts, which offer high glass transition temperatures tunable thermomechanical performance. The judicious control molecular weight photo‐reactive telechelic oligomers allows for fundamental study influence cross‐link density in 3D PU printed objects. VPP AM produces objects with resolution, smooth surface finish, isotropic mechanical properties. Thermal post‐processing is critical maintaining excellent properties semi‐crystallinity as function density. Due to presence two ester carbonyls bis(2‐hydroxyethyl) terephthalate chain extender, parts are readily amenable depolymerization methanolysis produce difunctional dimethyl dicarbamates under modest reaction conditions. Dimethyl serve suitable monomers subsequent polycondensation.

Language: Английский

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Rapid 3D printing of unlayered, tough epoxy-alcohol resins with late gel points via dual-color curing technology

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 26, 2024

Herein, printing a wide-meshed methacrylate matrix-assisted epoxide network utilizing alcohol chain transfer in semi-orthogonal curing leads to tough interpenetrating networks much faster, at lower intensities and without layer artefacts.

Language: Английский

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Role of post-polymerization in the curing of photopolymerizable composition under the influence of pulsed radiation

Russian Chemical Bulletin, Journal Year: 2024, Volume and Issue: 73(11), P. 3441 - 3449

Published: Nov. 1, 2024

Language: Английский

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