Influence of 3D Printing Conditions on Some Physical–Mechanical and Technological Properties of PCL Wood-Based Polymer Parts Manufactured by FDM

Beşliu, Irina; Tămăşag, Ioan; Slătineanu, Laurenţiu

doi:10.3390/polym15102305

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…After the activation of a void, the strain increases strongly with a very few stress, similarly to the model for the thermally activated break-away motion of dislocations in metals and alloys already described [46,78,82]. Therefore, the non-homogeneous mesostructure which could lead the poor mechanical properties in 3D pieces compared with pieces obtained from traditional production methods [7][8][9][10][11][12][13][14], could be now beneficial for tunable functional composites. Truly, the non-homogeneous mesostructure can be a source for promoting ADD effects.…”

Section: Discussionmentioning

confidence: 69%

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High functional 3D printed PCL/FSMA magnetic composites

Lambri,

Bonifacich,

Lambri

et al. 2024

Smart Mater. Struct.

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The capacity of adaptability of a 3D-printed composite of polycaprolactone-based containing micro-particles of ferromagnetic shape memory alloy of composition Ni45Mn36.7In13.3Co5 was determined. Composites exhibit an increase in both damping and modulus values up to around 11%, at temperatures close to 325 K, when applying a magnetic field of 120 kA/m. In addition, composites show also an increase in the damping values of around 50% at temperatures near 333 K, related to the martensitic transformation, which is promoted by an increase in the oscillating strain from 0.5x10-4 up to 2x10-4 and when applying a magnetic field of 120 kA/m. Moreover, the maximum temperature of use of the composite can be increased by means of a magnetic field. These adaptability qualities make this functional composite attractive, for the vibration control at elevated temperatures as well as the potential applications in magnetocaloric devices.

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Section: Discussionmentioning

confidence: 69%

“…and machining. There is an inherent inhomogeneity in the FDM printing technique due to the deposition process, which affects the mechanical properties of the printed part [7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

High functional 3D printed PCL/FSMA magnetic composites

Lambri,

Bonifacich,

Lambri

et al. 2024

Smart Mater. Struct.

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“…The research findings indicated that the infill density and layer height emerged as the primary factors influencing the results in the production of 3Dprinted components. Beșliu-Băncescu et al [24] examined the impact of printing temperature, layer thickness, and printing speed on the physical-mechanical properties (fracture temperature, weight error, ultimate tensile strength) as well as technological properties (cutting machinability, top and lateral surface roughness) of polycaprolactone (PCL) wood-based biopolymer components produced through FDM. The conducted research found that selecting the highest level of printing speed had a beneficial impact on both the surface roughness and ultimate tensile strength of the 3D-printed components.…”

Section: Introductionmentioning

confidence: 99%

Thermal Evaluation of Material Extrusion Process Parameters and Their Impact on Warping Deformation

2023

jjmie

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Warping deformation poses a significant challenge in the material extrusion process of ABS additive manufacturing, impacting dimensional accuracy and part quality. In this study, we aimed to optimize the printing factors to minimize warping deformation and enhance the overall performance of ABS-printed parts. The studied parameters included bed temperature, printing speed, chamber temperature, and printing temperature. To overcome the limitations of time-consuming and costly laboratory experiments, a simulation-based approach using numerical techniques and the Digimat-AM software's finite element model was employed to visualize and analyze warping deformation. The Taguchi technique was utilized to design a series of experiments, yielding valuable data for statistical analysis and optimization. The results highlighted the significant influence of bed temperature on warping deformation, followed by chamber temperature, printing temperature, and printing speed. Through systematic analysis, the "optimal" parameter settings were determined. These findings offer valuable insights for process optimization, enabling improved dimensional accuracy and reduced warping deformation in ABS additive manufacturing. By combining numerical simulation and the Taguchi method, this investigation gives a practical and efficient method for enhancing the performance of material extrusion processes, ensuring high-quality printed parts in the field of additive manufacturing.

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“…Such models are often applied to understand the interactions between factors (composition, excipient concentration, parameter values, etc.) and the desired characteristics of the tablets [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Polymer Tablet Matrix Systems for the Controlled Release of Dry Betula pendula Leaf Extract

Penkov,

Lukova,

Manev

et al. 2023

Polymers

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The aim of the study was to develop polymer matrix tablets with modified release of dry Betula pendula leaf extract and to investigate basic parameters influencing the drug release pattern. To fully assess the statistical significance of the influence of the individual factors in the tablet formulation development as well as the combination of them, Tukey’s tests and a complete 33 factor analysis of variance (ANOVA) were applied. The following three factors were studied at three levels (low, medium and high): influence of the hydrophobic/hydrophilic polymer ratio Ethylcellulose (EC)/Hydroxypropyl methylcellulose (HPMC) (40/60, 25/75 and 10/90), influence of HPMC molecular weight (500 kDa, 750 kDa and 1150 kDa), and influence of the compression force applied (1 t, 1.5 t and 2 t). The effect of these varied parameters on the drug release parameter t80 was evaluated statistically. Twenty-seven tablet models were formulated, including all possible combinations of the variables. The obtained drug release profiles demonstrated that a 25/75 (EC/HPMC) ratio was the most suitable for prolonging the release process. Increasing the molecular weight of HMPC from 500 kDa to 750–1150 kDa and applying higher compression force significantly influenced the studied t80 values and caused sustained drug release (t80 up to 7.97 h). The combination of the hydrophilic HPMC polymer with the hydrophobic EC can result in the formation of a promising drug-carrying matrix, offering effective control of the drug release process.

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Influence of 3D Printing Conditions on Some Physical–Mechanical and Technological Properties of PCL Wood-Based Polymer Parts Manufactured by FDM

Cited by 9 publications

References 31 publications

High functional 3D printed PCL/FSMA magnetic composites

High functional 3D printed PCL/FSMA magnetic composites

Thermal Evaluation of Material Extrusion Process Parameters and Their Impact on Warping Deformation

Polymer Tablet Matrix Systems for the Controlled Release of Dry Betula pendula Leaf Extract

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