An experimental and numerical study on an innovative metastructure for 3D printed thermoplastic polyurethane with auxetic performance DOI
Mehran Mojaver, Taher Azdast, Rezgar Hasanzadeh

et al.

Polymers for Advanced Technologies, Journal Year: 2024, Volume and Issue: 35(2)

Published: Feb. 1, 2024

Abstract Metamaterials are specifically designed materials that possess unique properties cannot be found in naturally occurring substances. These remarkable have the capability to bring about a significant transformation across wide range of industries. Auxetic structures recent area research distinctive characteristic known as negative Poisson's ratio. Unlike conventional contract when stretched, auxetic actually expand two dimensions. In this study, new structure was introduced, and thermoplastic polyurethane samples were 3D printed using fused filament fabrication method. The then subjected strains ranging from 5% 50% ratios measured both experimentally numerically finite element method Ansys software. By comparing results experimental simulation, it is evident applying within causes ratio change −0.81 −0.14 showed newly introduced auxetic. According analysis root mean square error, hexagonal mesh with size 0.7 mm consistently produced most accurate results, aligning closely sample. Given an entirely novel category arrow‐head structures, there potential for future conducted order further develop enhance model.

Language: Английский

3D printing assisted biofabrication of oxidized guar gum/agar–agar/salvianolic acid hydrogels DOI
Rahila Batul,

Syed Muneeb Haider Gillani,

A. S. K. Ghouri

et al.

The International Journal of Advanced Manufacturing Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Analysis of foreign body response and systemic toxicity of additively manufactured nanocellulose reinforced alginate gelatin-based scaffolds with interconnected 3D porous structure DOI
Sulob Roy Chowdhury,

Bikramjit Basu

Journal of Biomaterials Applications, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

The last two decaes have witnessed significant efforts to develop gelatin/alginate based scaffolds using variants of 3D printing techniques. However, their biocompatibility for regenerating complex soft tissues remains insufficiently explored. Addressing this gap, we fabricated 3D-printed alginate-gelatin (3A5G) and nanocellulose-reinforced (3A5G1C) hydrogel with clinically relevant dimensions (15 mm diameter, 5 height) the host tissue responses were critically analyzed. distinct advantages nanocellulose in modulating mechanical strength, viscoelasticity, swelling, degradation characteristics established our prior studies. This investigation aimed comprehensively evaluate foreign body response these a rat model. animals exhibited healthy metabolic activity, evidenced by progressive weight gain, localized healing, normal mobility over 30 days. Histological analyses could not reveal any adverse immune reaction at 7- or 30-days, post-implantation. Hematological serum biochemical assessments indicated progression from acute (7 days) sub-acute (30 inflammation, following subcutaneous implantation, without signature systemic toxicity. Immune marker evaluation (TNF-α, CD-8, CD-68, COX-2, IL-6) confirmed absence pathological responses, even incorporation. Immunohistochemical analysis CD31 staining demonstrated enhanced vascularization both 7 toxicity scaffold products favorable outcomes underline potential regeneration. incorporation further scaffolds' functional performance, particularly promoting vascularization, positioning them as promising candidates engineering applications.

Language: Английский

Citations

0
TPMS-based scaffolds: Adaptation of morphological properties and mechanical response to reference tissue DOI
Nataliya Elenskaya, Mikhail Tashkinov, Vadim V. Silberschmidt

et al.

International Journal of Solids and Structures, Journal Year: 2025, Volume and Issue: unknown, P. 113366 - 113366

Published: April 1, 2025

Language: Английский

Citations

0
Hierarchical chitin and chitosan-derived heterostructural nanocomposites: From interdisciplinary applications to a sustainable vision DOI
Le Gia Trung,

Jin Seog Gwag,

Ha Huu

et al.

Carbohydrate Polymers, Journal Year: 2025, Volume and Issue: 362, P. 123702 - 123702

Published: May 5, 2025

Language: Английский

Citations

0
An experimental and numerical study on an innovative metastructure for 3D printed thermoplastic polyurethane with auxetic performance DOI
Mehran Mojaver, Taher Azdast, Rezgar Hasanzadeh

et al.

Polymers for Advanced Technologies, Journal Year: 2024, Volume and Issue: 35(2)

Published: Feb. 1, 2024

Abstract Metamaterials are specifically designed materials that possess unique properties cannot be found in naturally occurring substances. These remarkable have the capability to bring about a significant transformation across wide range of industries. Auxetic structures recent area research distinctive characteristic known as negative Poisson's ratio. Unlike conventional contract when stretched, auxetic actually expand two dimensions. In this study, new structure was introduced, and thermoplastic polyurethane samples were 3D printed using fused filament fabrication method. The then subjected strains ranging from 5% 50% ratios measured both experimentally numerically finite element method Ansys software. By comparing results experimental simulation, it is evident applying within causes ratio change −0.81 −0.14 showed newly introduced auxetic. According analysis root mean square error, hexagonal mesh with size 0.7 mm consistently produced most accurate results, aligning closely sample. Given an entirely novel category arrow‐head structures, there potential for future conducted order further develop enhance model.

Language: Английский

Citations

2