Characterization of electrospun poly(lactide) composites containing multiwalled carbon nanotubes

Ristić, Ivan; Miletić, Aleksandra; Vukić, Nevena; Marinović‐Cincović, Milena; Šmits, Krišjānis; Cakić, Suzana; Pilić, Branka

doi:10.1177/0892705719857780

Cited by 8 publications

(11 citation statements)

References 24 publications

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“…For electrospinning, PLA-based solutions were prepared by dissolving appropriate amount of PLA in the mixture of chloroform and dimethylformamide in the volumetric ratio 6:4 (V:V), so that the final concentration of polymer was 9 wt% by a method published earlier [ 54 , 55 , 56 ]. Active materials were prepared by adding of 2% and 5% of biochanin A (calculated on the polymer weight) to basic polymer solutions.…”

Section: Methodsmentioning

confidence: 99%

Electrospun Poly(lactide) Fibers as Carriers for Controlled Release of Biochanin A

et al. 2022

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The aim of this study is to investigate the possibility of using electrospun polylactide (PLA) fibers as a carrier of the phytoestrogen biochanin A. Polylactide fibers were prepared with different contents of biochanin A by using an electrospinning method at specific process parameters. The obtained electrospun polylactide fibers, as carriers of biochanin A, were characterized by means of different methods. The presented results showed that the mechanical properties of PLA have not changed significantly in the presence of biochanin A. Scanning electron microscopy showed that the fine fiber structure is retained without visible deformations and biochanin A crystals on the surface of the fibres. The analysis by infrared spectroscopy showed that there are no strong interactions between polylactide and biochanin A molecules, which is a good prerequisite for the diffusion release of biochanin A from PLA fibers.The release of biochanin A from PLA fibers in buffer solution pH 7.4 at 37 °C was monitored by applying the HPLC method. The rate and time of the release of biochanin A from PLA fibers is in correlation with the amount of the active ingredient in the matrix of the carrier and follows zero-order kinetics. PLA fibers with biochanin A exhibit concentration-dependent activity on proliferation and migration of L929 fibroblasts in direct culture system in vitro, and proved to be suitable for a potential formulation for use in wound healing.

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Section: Methodsmentioning

confidence: 99%

Electrospun Poly(lactide) Fibers as Carriers for Controlled Release of Biochanin A

et al. 2022

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“…The most often used substance is PLA 9,10 because it is easily accessible, compostable, and has very consistent fabrication characteristics that only require a few parameters to be altered. 9,[11][12][13][14] However, FFF parts created from these polymers lack robustness and endurance. Among the most important developments in the production of polymers is the inclusion of strands and nanomaterials in the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…The FFF‐process generally makes use of several thermoplastic materials, including PLA, ABS, and PC. The most often used substance is PLA 9,10 because it is easily accessible, compostable, and has very consistent fabrication characteristics that only require a few parameters to be altered 9,11–14 . However, FFF parts created from these polymers lack robustness and endurance.…”

Section: Introductionmentioning

confidence: 99%

Augmenting the flexural strength of polymer composites for stronger and more durable prosthetic sockets

2023

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The objective of this study was to develop a novel approach to enhance the flexural strength of polymer composites used in the fabrication of prosthetic sockets. The effects of control factors such as nozzle hole diameter and internal filling pattern on the flexural behavior of three distinct composite materials were examined: poly lactic acid reinforced with carbon fiber (PLA‐CF), polyethylene terephthalate glycol reinforced with carbon fiber (PETG‐CF), and PLA reinforced with multi‐walled carbon nanotubes (PLA‐MWCNTs), fabricated through fused filament fabrication. During study, samples of each composite material were created using 3D printing technology and underwent flexural testing. Fractography was then performed on the samples, and statistical analysis techniques, including Taguchi's method and response surface methodology (RSM) were used to analyze the results. The study found that the flexural behavior of the prosthetic socket materials varied significantly based on the control factors used. Specifically, a nozzle hole diameter of 0.6 mm and a rectilinear internal filling pattern with PLA‐MWCNTs composite material had the highest flexural strength among the three materials tested. Through this study, the authors demonstrated the potential to improve the design and manufacture of prosthetic sockets, which can lead to better functionality and comfort for the user. The low‐cost transtibial prosthetic socket developed in this study using the optimized composite material and 3D printing technology shows promise as an application in the field of prosthetics. This research can pave the way for the development of even stronger and more durable prosthetic sockets in the future.

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“…The most popular material is PLA since it is readily available, biodegradable, and has very stable fabricating features that only need a few settings to be adjusted. [15][16][17] High mechanical strength, thermo-plasticity, and fabricability are only a few of PLA's physical qualities that demonstrate its good biocompatibility. [16][17][18][19] However, their applicability in many applications is limited by their very stiff, brittle, slow crystallisation, and hydrolysis characteristics.…”

Section: Introductionmentioning

confidence: 99%

Comparing the flexural and morphological properties of dissimilar FFF-fabricated polymer composites

Jain

Upadhyay

Sahai

et al. 2023

Journal of Thermoplastic Composite Materials

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Additive manufacturing is becoming more and more significant for the production of engineering products. The global community of designers and manufacturers will undoubtedly benefit from identifying the process factors that could lead to superior mechanical behaviour. The incorporation of fibres and nanoparticles in polymer matrix is one of the most significant advancements in polymer fabrication. This study intends to investigate how the flexural behaviour of dissimilar polymer composites viz carbon fibre reinforced poly lactic acid (CF-PLA), carbon fibre reinforced poly ethylene terephthalate glycol (CF-PETG) and multi walled carbon nano tubes reinforced PLA (MWCNTs-PLA) are affected by process parameters viz nozzle diameter (0.2 mm, 0.4 mm, 0.6 mm), and infill pattern (triangular, honeycomb, rectilinear) through fused filament fabrication (FFF). Flexural testing was carried out on the fabricated specimens, and post to the testing, fractography has been carried out and statistical analysis of the observations is performed utilizing analysis of variance and Taguchi method. According to the observations, flexural strength of the polymer composite specimen increases with increase in nozzle diameter (ND). The flexural behaviour is also directly impacted with the variation of infill pattern (IP). Process parameter variations affect target factors differently depending on the fabricating material. For flexural behaviour, IP contributes 68.27% to CF-PLA, while ND contributes 88.96% to CF-PETG and 77.59% to MWCNTs-PLA. Overall, the highest flexural strength, 70.372 MPa, is exhibited by the specimen with ND 0.6 mm and rectilinear IP for MWCNTs-PLA as fabricating filament material. This study will aid researchers and designers in developing FFF-fabricated electrochemical energy storage devices with improved flexural behaviour of functional parts for a wide range of applications.

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Characterization of electrospun poly(lactide) composites containing multiwalled carbon nanotubes

Cited by 8 publications

References 24 publications

Electrospun Poly(lactide) Fibers as Carriers for Controlled Release of Biochanin A

Electrospun Poly(lactide) Fibers as Carriers for Controlled Release of Biochanin A

Augmenting the flexural strength of polymer composites for stronger and more durable prosthetic sockets

Comparing the flexural and morphological properties of dissimilar FFF-fabricated polymer composites

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