Amalgamated fiber/hydrogel composites based on semi-interpenetrating polymer networks and electrospun nanocomposite fibrous mats

Papaparaskeva, Georgia; Louca, Maria; Voutouri, Chrysovalantis; Tanasă, Eugenia; Stylianopoulos, Triantafyllos; Krasia‐Christoforou, Theodora

doi:10.1016/j.eurpolymj.2020.110041

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…When the corrugated collector is used to produce a P4VPBuMA aligned fibrous pattern, the needle-to-collector distance should be shorter (5 cm) so that the ejected fibers can accumulate toward the center of the collector. PVP is a widely used polymer that has been processed by electrospinning, resulting in the fabrication of randomly oriented and aligned (nano)fibrous materials destined for use as tissue engineering scaffolds with controllable mechanical properties and multifunctionalities, 48,49 multifunctional fibrous membranes for magnetic hyperthermia applications, 50 sensors and actuators, 51 robust hydrophilic polymer fibers sensitized by perovskite nanocrystal emitters, 52 catalytic fibrous matrixes incorporating inorganic catalytic nanoparticles, 53 functional electrospun fibers employed in water remediation processes, 54 and so on. 55−58 PVP electrospun randomly oriented and aligned fibers were fabricated by applying the following optimum electrospinning conditions at room temperature and RH of 55%: A needle diameter of 20 G, a needle-to-collector distance of 25 cm, a flow rate of 1.33 mL h −1 , and a high voltage of 20 kV.…”

Section: Resultsmentioning

confidence: 99%

Highly Aligned Electrospun Polymer Fibers Produced Using a Corrugated Static Collector

Papaparaskeva

Papagiorgis

Itskos

et al. 2021

ACS Appl. Polym. Mater.

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Fiber alignment via electrospinning is a challenging process that requires complex optimization because of the synergistic contribution of the solution, processing, and environmental parameters. Much of the work has focused on the design of collectors that enable fiber alignment, in contrast to that of the stationary, flat collector where randomly oriented fibers are deposited. However, in most cases, the proposed collectors have either movable parts or complicated configurations. The present study focuses on a simplified design concept involving the use of a corrugated metallic collector in the production of highly aligned electrospun fibers based on three polymer systems exhibiting different physicochemical characteristics: Polyvinylpyrrolidone (PVP) (insulating), poly(3-hexylthiophene-2,5-diyl) (P3HT)-rich polymer blend (semiconducting), and poly(4-vinylpyridine-co-butyl methacrylate) (P4VPBuMA) (polyelectrolyte). The electric field profile developed in the presence of the corrugated collector was simulated by means of finite element analysis and compared to that of the conventional flat collector. Most importantly, electrospun meshes with an exceptionally high degree of alignment (up to 95%) after a prolonged electrospinning time were produced in all cases, thus demonstrating the effectiveness of this simple collector design approach on the production of highly oriented electrospun polymer fibers of various chemical compositions. Electro-optical characterization of the P3HT systems shows that oriented fibers exhibit identical optical properties to fibers with random orientation, indicating that the molecular conformation and structural state of the fibers is not affected by the alignment process during electrospinning. On the other hand, aligned fibers exhibit superior electrical properties, as evidenced by the suppression of hysteresis and an increase of photoconductance by up to 2.5 times compared to the respective characteristics of randomly oriented fibers due to an alignment-induced reduction of capacitive parasitic effects.

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Section: Resultsmentioning

confidence: 99%

Highly Aligned Electrospun Polymer Fibers Produced Using a Corrugated Static Collector

Papaparaskeva

Papagiorgis

Itskos

et al. 2021

ACS Appl. Polym. Mater.

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“…Papaparaskeva et al projected prefabricated fibrous mats of PVP/silver nanocomposites incorporated within semi-IPN hydrogels in two unique forms of laminated dispersion (a prefabricated electrospun fibrous mat was placed in the circumference of the fiber/hydrogel composite) and homogeneous (a 2D circular fibrous mat was homogeneously encapsulated within a 3D hydrogel matrix). They noted that the dispersion mode of electrically spun fibrous mats within the hydrogel significantly influences the mechanical performance of the resulting composite [ 198 ]. Injectable composites have been considered an alternative to produce fiber–hydrogel constructs with homogeneous qualities.…”

Section: Fiber–hydrogel Compositesmentioning

confidence: 99%

Recent Advances in Fiber–Hydrogel Composites for Wound Healing and Drug Delivery Systems

2021

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In the last decades, much research has been done to fasten wound healing and target-direct drug delivery. Hydrogel-based scaffolds have been a recurrent solution in both cases, with some reaching already the market, even though their mechanical stability remains a challenge. To overcome this limitation, reinforcement of hydrogels with fibers has been explored. The structural resemblance of fiber–hydrogel composites to natural tissues has been a driving force for the optimization and exploration of these systems in biomedicine. Indeed, the combination of hydrogel-forming techniques and fiber spinning approaches has been crucial in the development of scaffolding systems with improved mechanical strength and medicinal properties. In this review, a comprehensive overview of the recently developed fiber–hydrogel composite strategies for wound healing and drug delivery is provided. The methodologies employed in fiber and hydrogel formation are also highlighted, together with the most compatible polymer combinations, as well as drug incorporation approaches creating stimuli-sensitive and triggered drug release towards an enhanced host response.

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Marrying the incompatible for better: Incorporation of hydrophobic payloads in superhydrophilic hydrogels

Boon-in

Theerasilp

Crespy

2022

Journal of Colloid and Interface Science

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Amalgamated fiber/hydrogel composites based on semi-interpenetrating polymer networks and electrospun nanocomposite fibrous mats

Cited by 3 publications

References 41 publications

Highly Aligned Electrospun Polymer Fibers Produced Using a Corrugated Static Collector

Highly Aligned Electrospun Polymer Fibers Produced Using a Corrugated Static Collector

Recent Advances in Fiber–Hydrogel Composites for Wound Healing and Drug Delivery Systems

Marrying the incompatible for better: Incorporation of hydrophobic payloads in superhydrophilic hydrogels

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