Article
Polymer Science
Adrian Lewandowski, Krzysztof Wilczynski
Summary: This paper reviews the issue of modeling twin-screw extrusion of polymeric materials and presents a global approach to process modeling, including solid polymer transport, polymer plasticating, and the flow of molten polymer. It also discusses the optimization and scaling of twin-screw extrusion, as well as the future prospects of developments and research in this field.
Article
Environmental Sciences
Alberto Rubin Pedrazzo, Francesco Trotta, Gjylije Hoti, Federico Cesano, Marco Zanetti
Summary: Cyclodextrin nanosponges have various applications in pharmaceuticals, with researchers developing more eco-friendly and efficient synthesis methods, including using mechanochemistry as a new approach.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Polymer Science
Matthias Altepeter, Volker Schoeppner, Sven Wanke, Laura Austermeier, Philipp Meinheit, Leon Schmidt
Summary: Nowadays, usable plastic materials with defined properties are created by blending additives into the base polymer. This article investigates the transferability of previous studies on the material degradation of polypropylene to different machine sizes and compounds. The results show that compounders can use the recommendations and calculation model to design processes that are gentle on the material, regardless of the machine size.
Article
Engineering, Chemical
Ryan J. Kowalski, Ewa Pietrysiak, Girish M. Ganjyal
Summary: A genetic algorithm model and neural network fitness function were developed to predict screw profile design, which successfully predicted the necessary screw profiles and extrusion conditions. By simulating predicted screw profile designs, quick optimization of desired characteristics in the final extrudates can be achieved.
JOURNAL OF FOOD ENGINEERING
(2021)
Article
Food Science & Technology
Chunmin Guan, Jingjing Liu, Senlan Gan, Gangping Xiong, Fan Qiao, Weiling Mo, Yakun Song, Xiangjin Fu, Chun Liu, Qinlu Lin
Summary: This study investigated the impact of soluble soybean polysaccharide (SSPS) on the cooking and eating quality of rice noodles. The addition of SSPS improved the cooking and sensory quality of rice noodles, and rice noodles prepared by twin-screw extrusion had a more desired appearance and better taste. The addition of SSPS reduced the pasting viscosity of rice flour and inhibited the generation of the starch-ordered structure. Double-3% rice noodles exhibited higher cooking and eating quality, as well as intensity of V-type diffraction peak.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Robert R. A. Bolt, Sarah E. Raby-Buck, Katharine Ingram, Jamie A. Leitch, Duncan L. Browne
Summary: This article describes the use of temperature-controlled mechanochemistry for the mechanochemical nickel-catalyzed Suzuki-Miyaura coupling. The method eliminates the need for bulk solvents and is not affected by air/moisture, and has been successfully scaled up using twin-screw extrusion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Gregory A. Campbell, Mark D. Wetzel, Paul Andersen, Joseph Golba
Summary: This paper presents a novel melting model for the kneading block melting zone in co-rotating, fully intermeshing twin screw extruders. The model includes multiple melting mechanisms such as friction heating, pellet compression, energy diffusion, and viscous dissipation. It is validated using extrusion measurements and visualizations with low density polyethylene. The study helps to elucidate the mechanisms during melting in twin screw extruders.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Chemistry, Applied
Khadija Trigui, Albert Magnin, Jean-Luc Putaux, Sami Boufi
Summary: Twin-screw extrusion (TSE) is an effective method for preparing high-solid-content nanocellulose gels. This study investigates the disintegration mechanism of cellulose fibers and the role of fiber pretreatment. The results show that combining TSE with rotor-stator dispersion or short sonication homogenization can enhance the fibrillation during extrusion, leading to a higher fraction of nanocellulose.
CARBOHYDRATE POLYMERS
(2022)
Correction
Materials Science, Paper & Wood
Hesam Taheri, Maiju Hietala, Kristiina Oksman
Summary: The affiliation of all the authors in the original publication was processed incorrectly and has now been updated in the correction.
Article
Engineering, Chemical
Hannes Bauer, Josip Matic, Johannes Khinast
Summary: This study used Smoothed Particle Hydrodynamics simulations to investigate the pressure build-up, power consumption, and mixing behavior of various extruder elements in pharmaceutical extrusion equipment. A comprehensive parameter catalogue was computed to study the performance of all elements under different operating conditions, and novel process maps supporting the optimization of process zone length were presented.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Food Science & Technology
Ana Belen Martin-Diana, Belen Blanco Espeso, Ivan Jesus Jimenez Pulido, Pedro J. Acebes Martinez, Daniel Rico
Summary: Gluten-free products are experiencing significant growth in the baked goods industry due to the high incidence of celiac disease. Rice flour is commonly used in gluten-free products but lacks fiber, protein, and minerals. Teff, a gluten-free grain with high fiber and antioxidant content, has limited functionality. This study evaluated the effect of extrusion on rice-teff mixtures and found that extrusion improved the technological properties and antioxidant activity of the blends.
Article
Polymer Science
Kun Cong, Jiyu He, Rongjie Yang
Summary: TPU and FR-TPU were prepared by reactive extruding with different chain extenders to adjust molecular weight and mechanical properties, characterized by FTIR, DSC, TGA, and NMR. This solvent-free method was efficient in producing polymers.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Agricultural Engineering
Gabriel Banvillet, Etienne Gatt, Naceur Belgacem, Julien Bras
Summary: The study focused on cellulose fiber deconstruction for CNF production using bioextrusion with twin-screw extrusion. Results showed that bioextrusion led to improved CNF properties compared to reference, with lower energy consumption. This concept could be optimized for industrial production of highly concentrated CNF.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Joaquim Manoel Justino Netto, Amir Ilkiu Sarout, Andre Luiz Grando Santos, Alessandra de Almeida Lucas, Marcelo Aparecido Chinelatto, Jorge Lino Alves, Antonio Gaspar-Cunha, Jose Antonio Covas, Zilda de Castro Silveira
Summary: This paper presents the design and validation of an innovative 3D printer with a co-rotating twin screw extrusion unit, which offers improved mixing capacity and process flexibility. The feasibility of the design was verified through numerical calculations and extrusion tests, and successful printing of various samples was achieved.
ADDITIVE MANUFACTURING
(2022)
Article
Polymer Science
Ashish Kaushal, Vishal Singh
Summary: The research focuses on preparing graphite and carbon fiber reinforced polypropylene composites with improved mechanical strength and electromagnetic shielding efficiency, showing promising potential for applications in deterring electromagnetic pollution.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
