Article
Engineering, Multidisciplinary
Wenzhao Wang, Boqing Zhang, Mingxin Li, Jun Li, Chengyun Zhang, Yanlong Han, Li Wang, Kefeng Wang, Changchun Zhou, Lei Liu, Yujiang Fan, Xingdong Zhang
Summary: This study utilized 3D printing technology to fabricate composite scaffolds of PLA and n-HA, and demonstrated their potential for large bone defect repair through biocompatibility and in vivo implantation tests.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Polymer Science
Sara Perez-Davila, Natalia Garrido-Gulias, Laura Gonzalez-Rodriguez, Miriam Lopez-Alvarez, Julia Serra, Jose Eugenio Lopez-Periago, Pio Gonzalez
Summary: Additive manufacturing by 3D-FDM printing allows the production of patient-specific scaffolds for bone tissue regeneration. This study investigates the direct 3D printing of bone-related scaffolds using PLA and HA, and characterizes their properties. The results show efficient HA incorporation, uniform distribution, improved surface roughness, and higher bioavailability of the printed scaffolds. The scaffold porosity and mechanical properties can be controlled, and cell evaluation confirms enhanced cell proliferation.
Article
Materials Science, Multidisciplinary
Boqing Zhang, Ling Wang, Ping Song, Xuan Pei, Huan Sun, Lina Wu, Changchun Zhou, Kefeng Wang, Yujiang Fan, Xingdong Zhang
Summary: This study successfully combined PLLH/nHA composite with FDM technology to prepare porous bone repair scaffolds. The scaffolds showed good printing smoothness and accuracy, suitable mechanical properties, and good osteogenic properties.
MATERIALS & DESIGN
(2021)
Article
Biotechnology & Applied Microbiology
Ramses Belda-Perez, Sonia Heras, Costanza Cimini, Jon Romero-Aguirregomezcorta, Luca Valbonetti, Alessia Colosimo, Bianca Maria Colosimo, Silvia Santoni, Barbara Barboni, Nicola Bernabo, Pilar Coy
Summary: With the increasing demand for assisted reproductive technologies, the use of 3D printing for in vitro fertilization studies has been explored. This study evaluated different 3D-printing processes and biomaterials for supporting bovine embryo development. The results showed that 3D-printed scaffolds made with extrusion-based processing and polycaprolactone (PCL) had the best outcomes in terms of embryo development.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Review
Pharmacology & Pharmacy
Malgorzata Oleksy, Klaudia Dynarowicz, David Aebisher
Summary: Three-dimensional printing technology has been used for over 30 years in various industries such as automotive and aerospace. Its application in medicine has been limited to anatomical models, due to material limitations. Recent advances in innovative materials have led to the flourishing use of 3D printing in medicine and pharmacy, with notable developments in implant design, personalized biomedical models, and bioprinting for regenerative medicine. This review aims to characterize popular 3D printing techniques.
Article
Chemistry, Physical
Yue Qian, Cheng Li, Yuzhao Qi, Jing Zhong
Summary: The study introduces a universal strategy for large-scale alignment of graphene oxide without the need for modification. By laminating, scrolling, and 3D printing, graphene oxide nanosheets are aligned in the filament axial direction, resulting in improved mechanical properties of the composite materials.
Article
Chemistry, Multidisciplinary
Matteo Hirsch, Alvaro Charlet, Esther Amstad
Summary: Many soft natural tissues possess unique mechanical properties achieved through complex interactions between structure and composition. To address the lack of control in soft synthetic materials, a novel 3D printing approach called double network granular hydrogels (DNGHs) has been introduced. These DNGHs are stiff enough to support high tensile loads and significantly tougher than pure polymeric networks. This ink allows for the printing of strong and tough objects with high shape fidelity, opening up new possibilities for soft robotic applications.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Acoustics
R. Sailesh, L. Yuvaraj, Jeyaraj Pitchaimani, Mrityunjay Doddamani, Lenin Babu Mailan Chinnapandi
Summary: The research presents the influence of perforations with arbitrarily varying cross-sections on the acoustic behavior of 3D printed bio-degradable panels made of Poly Lactic Acid (PLA). Results show that perforated panels with varying cross-sections exhibit better sound absorption compared to uniform cross-sectional perforations, with DC and D perforation patterns showing comparable and lower transmission losses. Geometrical perforation variations are crucial in designing soundproof panels, as demonstrated in the study, and numerical analysis provides guidelines for designing optimum perforation geometries.
Article
Polymer Science
Camila Beatriz de Souza Medeiros, Bruna Louise Silva, Antonio Marcos Medeiros, Jose Daniel Diniz Melo, Ana Paula Cysne Barbosa
Summary: This study evaluated the changes in properties of 3D-printed PLA material when immersed in a simulated biological media, for potential applications in implantable devices. The results showed that immersion caused an initial increase and subsequent decrease in mass, as well as chemical alterations and an increase in glass transition temperature. Although there were no significant changes in flexural strength, the fatigue life of the immersed samples decreased by an average of 57% to 77%.
Article
Biochemistry & Molecular Biology
Eray Altan, Nurgul Turker, Osama Ali Hindy, Zeynep Dirican, Ozlem Bingol Ozakpinar, Aysegul Uzuner Demir, Deepak Kalaskar, Sourbh Thakur, Oguzhan Gunduz
Summary: In this study, a new polymer combination of Chitosan/Xanthan Gum was fabricated into wound dressings using 3D printing method. The dressings showed biocompatible, biodegradable, improved mechanical strength, and hydrophilic properties. In vitro cell culture experiments demonstrated their potential for cell proliferation and adhesion, making them promising for wound dressing applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Polymer Science
Pablo Romero-Araya, Victor Pino, Ariel Nenen, Verena Cardenas, Francisca Pavicic, Pamela Ehrenfeld, Guillaume Serandour, Judit G. Lisoni, Ignacio Moreno-Villoslada, Mario E. Flores
Summary: By combining 3D printing and electrospinning technologies, researchers have successfully produced biocompatible composite materials with mechanical properties similar to bone tissues.
Article
Engineering, Manufacturing
Haijun He, Kolos Molnar
Summary: A novel fabrication process was proposed in this study, utilizing nanofiber interleaves in 3D printed structures to enhance mechanical properties. By improving the morphology of nanofibers at the interlaminar interface and controlling nanofiber content, improvements were observed in the mechanical properties of nanocomposites.
ADDITIVE MANUFACTURING
(2021)
Article
Polymer Science
Catalin Gheorghe Amza, Aurelian Zapciu, Florin Baciu, Mihai Ion Vasile, Adrian Ionut Nicoara
Summary: This study examined the mechanical property changes of 3D printed parts made from PLA and PETG materials after accelerated aging due to UV-B exposure. The results showed significant decreases in both tensile and compressive strengths of the parts after irradiation, with creep behavior being closely connected to the decrease in mechanical properties.
Review
Chemistry, Physical
Angelika Zaszczynska, Maryla Moczulska-Heljak, Arkadiusz Gradys, Pawel Sajkiewicz
Summary: This study summarizes the latest advancements in 3D printing techniques in tissue engineering applications, focusing on the systematics of available 3D printing techniques, printable biomaterials, and advancements in 3D printing-assisted tissue engineering.
Review
Chemistry, Multidisciplinary
Assaf Shapira, Tal Dvir
Summary: 3D bioprinting is an emerging technology with great potential in tissue engineering. Despite challenges, innovative approaches and advanced technologies can address current issues and pave the way for future directions.
Article
Engineering, Environmental
Francesca Lionetto, Carola Esposito Corcione, Francesco Messa, Serena Perrone, Antonio Salomone, Alfonso Maffezzoli
Summary: This study investigates the challenges associated with adsorption studies of contaminants on microplastics (MPs) in the marine environment and explores the adsorption of amoxicillin on different types of MPs. The results show that aged MPs absorb a higher antibiotic content than unaged ones due to their different specific surface areas. The thermodynamic affinity between amoxicillin and PET MPs is analyzed through Hansen's solubility parameters, and a potential interaction mechanism based on hydrogen bonding is hypothesized. Additionally, it is found that PET MPs can serve as carriers for pollutant transport in the aquatic environment.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Materials Science, Composites
Fabio De Pascalis, Francesca Lionetto, Alfonso Maffezzoli, Michele Nacucchi
Summary: A general method of predicting the stiffness tensor of short-fiber composites has been presented in this study, based on the fabric tensor obtained from X-ray computed tomography. The method does not rely on the specific type of fabric tensor used to characterize the symmetry properties of the composite. Experimental data from thermoplastic composite matrices reinforced with short carbon and basalt fibers were used to validate the method. The statistical alignment of fibers in each portion of the sample was measured to calculate the components of the stiffness tensor.
POLYMER COMPOSITES
(2023)
Review
Polymer Science
Andrea Dei Sommi, Francesca Lionetto, Alfonso Maffezzoli
Summary: Liquid composite molding (LCM) is a fast and cheap process for fabricating large parts with good properties. The filling stage, which involves impregnating a reinforcing fiber preform with low-viscosity resin, relies on Darcy's permeability. This review summarizes the most commonly used methods for permeability measurement in LCM.
Article
Polymer Science
Lucia D'Accolti, Alessia De Cataldo, Francesco Montagna, Carola Esposito Corcione, Alfonso Maffezzoli
Summary: This study presents a new method using recyclable 3D-printed polylactic acid (PLA) scaffolds coated with iron oxide catalyst for Fenton reactions on aromatic model molecules. The results show that the scaffolds have advantages of easier handling and waste reduction, leading to a reduction in times and costs. The catalyst coating has limited leachability and can be easily recovered and reused multiple times.
Article
Chemistry, Multidisciplinary
Zahra Rajabimashhadi, Rahim Naghizadeh, Ashkan Zolriasatein, Carola Esposito Corcione
Summary: Researchers successfully synthesized magnesium hydroxide nanoparticles with hexagonal structure and various morphologies including plate, flake, spherical, and disc shapes using the hydrothermal method by changing the precursor and surfactant.
Article
Green & Sustainable Science & Technology
F. Scalera, S. I. A. Pereira, A. Bucciarelli, D. M. Tobaldi, A. Quarta, F. Gervaso, P. M. L. Castro, A. Polini, C. Piccirillo
Summary: Chitosan (Cs) and hydroxyapatite (HA) 3D scaffolds/composites were prepared using a sustainable process, with HA obtained from cork-derived CaCO3 acting as a template agent. HA@Cs composites were formed by in situ HA formation in a Cs solution. The CsHA_72 composite exhibited improved pore structure, smaller and more circular pores, excellent biocompatibility, and good cell proliferation, making it a suitable biomaterial.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Green & Sustainable Science & Technology
Manfredi Saeli, Marinelia N. Capela, Clara Piccirillo, David M. Tobaldi, M. Paula Seabra, Francesca Scalera, Raffaella Striani, Carola Esposito Corcione, Tiziana Campisi
Summary: This paper presents the development of green bio-composite mortars by reusing spent coffee ground (SCG) in the Circular Economy approach. The addition of SCG in the mortar resulted in a more compact structure and various concrete applications. Despite a decrease in bulk density, the mechanical performance remained suitable for masonry applications. The reused bio-waste also led to a reduction in manufacturing cost and showed promising potential for energy-saving uses in buildings.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biochemistry & Molecular Biology
Giuseppe Greco, Antonella Giuri, Sonia Bagheri, Miriam Seiti, Olivier Degryse, Aurora Rizzo, Claudio Mele, Eleonora Ferraris, Carola Esposito Corcione
Summary: In this study, ternary nanocomposites based on PEDOT:PSS and graphene oxide (GO), blended with green additives (glucose or ascorbic acid), were fabricated and characterized. The results showed that the nanocomposites had good electrochemical properties and chemical structures, making them suitable for the fabrication of supercapacitors in printed (bio)-electronics.
Article
Chemistry, Physical
Daniela Rizzo, Daniela Fico, Francesco Montagna, Raffaele Casciaro, Carola Esposito Corcione
Summary: This study successfully reproduced four missing columns of a 17th century polychrome wooden ciborium using advanced technologies, overcoming the challenges of scanning reflective surfaces and utilizing 3D printing techniques. The importance of collaboration between different professionals for restoration design and the need for scientific research into high-performance 3D printing materials suitable for conservation are highlighted.
Article
Chemistry, Physical
Daniela Fico, Daniela Rizzo, Francesco Montagna, Carola Esposito Corcione
Summary: This paper compares the advantages and disadvantages of fused filament fabrication (FFF) and computer numerical control (CNC) milling in the specific case of conserving cultural heritage. It is found that PETG is more suitable than pine wood for reproducing the missing columns, as it retains water repellent and colorimetric properties after artificial aging. The comparison also shows that CNC milling is quicker but more expensive and produces more waste compared to FFF printing. Based on these results, FFF is assessed to be more suitable for replicating the specific column.
Article
Polymer Science
Zahra Rajabimashhadi, Rahim Naghizadeh, Ashkan Zolriasatein, Sonia Bagheri, Claudio Mele, Carola Esposito Corcione
Summary: Polyurethane (PU) is a widely used polymer coating with favorable characteristics such as low density, nontoxicity, nonflammability, longevity, adhesion, simplicity in manufacture, flexibility, and hardness. However, it has limitations in mechanical properties, thermal and chemical stability, especially at high temperatures, where it becomes flammable and loses adhesion ability. In this study, PU composites were developed by adding reinforcements such as magnesium hydroxide and silica nanoparticles to overcome these weaknesses. The hydrophobic, physical, and mechanical properties of the pure PU and its composites were examined, and the presence of fillers was found to improve the surface topography and mechanical properties of the hybrid composite. The hybrid polymer coatings also exhibited superhydrophobic properties.
Review
Polymer Science
Giulia Morello, Gianvito De Iaco, Giuseppe Gigli, Alessandro Polini, Francesca Gervaso
Summary: Hydrogels are biomaterials that can act as a scaffold for cells to organize themselves spatially, similar to what occurs in vivo. They are essential for the development of 3D systems and can recreate the cellular microenvironment, making them ideal for tissue engineering and 3D in vitro modeling.
Article
Engineering, Multidisciplinary
Andrea Dei Sommi, Giuseppe Buccoliero, Francesca Lionetto, Fabio De Pascalis, Michele Nacucchi, Alfonso Maffezzoli
Summary: The purpose of this study was to develop a multiphysic model to predict the conditions leading to water-generated porosity in autoclave lamination of composite parts, and to prevent their presence by modifying the process parameters. The model was proven effective in predicting and avoiding porosity development in epoxy matrix carbon fiber reinforced laminates exposed to a moist environment.
COMPOSITES PART B-ENGINEERING
(2023)
Proceedings Paper
Polymer Science
Antonio Greco, Francesca Ferrari, Alfonso Maffezzoli
Summary: This study aims to investigate the suitability of plasticized polylactic acid (PLA) using two cardanol derivatives, cardanol (CA) and epoxidized cardanol acetate (ECA), in two different processing techniques, injection molding and rotational molding. The crystallization kinetics of plasticized PLA were initially studied, with poly(ethylene glycol) (PEG) shown to significantly increase the rate of crystallization during cooling. The two different processing techniques, characterized by different cooling rates, resulted in the production of either amorphous or crystalline samples, with CA and ECA allowing for the production of amorphous samples even in rotational molding, thus retaining good toughness.
PROCEEDINGS OF THE 36TH CONFERENCE OF THE POLYMER PROCESSING SOCIETY, PPS36
(2023)
