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Development of biodegradable and antimalarial textile structures
Published in Gianni Montagna, Cristina Carvalho, Textiles, Identity and Innovation: In Touch, 2020
C. Pinheiro, N. Belino, R. Paul
Taking into account the need to have a totally biodegradable fibre that would be able to withstand the thermal and rheological conditions of a fusion extrusion process, Natureworks Ingeo 6201D PLA15 biopolymer was selected. This material is marketed under the brand Ingeo™ biopolymer, and it is a polymer that offers environmental benefits because it is made from renewable resources.
Manufacturing of resorbable composite biomaterials containing protein
Published in Materials and Manufacturing Processes, 2022
The following materials were used in the preparation of the samples: poly-L-lactide (PLA) – Ingeo™ 3051D, NatureWorks® LLC; long poly-L-lactide fibers – obtained by the wet solution method at the Department of Material and Commodity Sciences and Textile Metrology of Lodz University of Technology (fiber diameter 9.6 µm, tensile strength 1.34 GPa, Young’s modulus 20.1 GPa, εFmax 30.2%); long calcium alginate fibers – obtained at the Department of Material and Commodity Sciences and Textile Metrology of Lodz University of Technology. The fibers were formed via the wet solution method, using the 7.4% sodium alginate solution in water. The solidification and tension process was performed by means of the 3% CaCl2 bath (fiber diameter 10.65 µm, tensile strength 261 MPa, Young’s modulus 15.1 GPa, εFmax 1.7%); sodium alginate – Sigma-Aldrich; albumin – Egg white, Grade II, Sigma-Aldrich; culture medium – DMEM High Glucose (4.5 g/l) with L-Glutamine.
A Comparison of the physical properties of two commercial 3D printing PLA grades
Published in Virtual and Physical Prototyping, 2021
Diego Bermudez, Paulina A. Quiñonez, Evelyn J. Vasquez, Israel A. Carrete, Truman J. Word, David A. Roberson
Two grades of PLA: (1) Ingeo Biopolymer 3D870: and (2) Ingeo Biopolymer 4043D, were purchased from NatureWorks, LLC (NatureWorks, LLC, Minnetonka, MN, USA) in pellet form. Following the manufacturer’s technical data sheet, PLA 3D870 pellets were dried at 50°C for 8 h, while PLA 4043D pellets were dried at 80°C for 4 h to avoid material degradation due to hygroscopic mechanisms induced by the presence of moisture. Drying was conducted using a compressed air dryer (DriAir CFAM Micro-Dryer, East Windsor, CT, USA). The dried pellets of each PLA grade were then processed through extrusion using a twin-screw extruder (Model ZK 25 T, Collin Lab and Pilot Solutions, Norcross, GA, USA) to obtain a uniform filament with a 1.75 mm diameter. Extrusion parameters are shown in Table 1. Because the filaments were water cooled, the spools were dried again by following the manufacture’s technical data sheet using a VWR horizontal air flow oven (Radnor, PA, USA) and subsequently stored in zip sealing bags with desiccant.
Relationships between size and mechanical properties of scaffold-like structures
Published in Mechanics of Advanced Materials and Structures, 2021
Claudia Pagano, Lara Rebaioli, Francesco Baldi, Irene Fassi
PLA from NatureWorks, Ingeo™ Biopolymer 4043D, has been used for this study. According to the manufacturer data sheet, its density and melt flow rate are 1.24 g/cm3 and 76 g/10 min (evaluated at 210 °C with an extruding mass of 2.16 kg, as in the standard ASTM D1238 [16]), respectively. In order to obtain filaments to feed the FDM machine, the PLA pellets have been processed using a LabTech co-rotating twin-screw extruder (screw diameter = 16 mm, screw length to diameter ratio L/D = 40); the screw rotation speed has been set at 110 rpm, feed rate at 2.0 kg/h and barrel temperatures at 180 °C except for the first zone, set at 140 °C. Filaments with average diameter of 1.75 mm have been obtained.