https://sam.ensam.eu:443 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. Thu, 12 Mar 2026 10:57:46 GMT 2026-03-12T10:57:46Z http://hdl.handle.net/10985/22478 Crosslinked Polyethylene (XLPE), Recycling via Foams BAWARETH, Mohammed; XU, Weiheng; RAVICHANDRAN, Dharneedar; ZHU, Yuxiang; JAMBHULKAR, Sayli; FONSECA, Nathan; MIQUELARD-GARNIER, Guillaume; VISNANSKY, Camille; LOVELADY, Matthew; CAMPBELL, William; SONG, Kenan Efficient recycling of crosslinked polyethylene has been challenging due to manufacturing difficulties caused by chemical crosslinking. This study focuses on simple processing via solid waste powder generation and particle fining for the subsequent crosslinked polyethylene inclusion and dispersion in rigid polyurethane foam. In addition, the concentration effects of crosslinked polyethylene in polyurethane were studied, showing a well-controlled foam microstructure with uniform pores, retained strength, better thermal degradation resistance, and, more importantly, increased thermal capabilities. Thus, the simple mechanical processing of crosslinked polyethylene and chemical urethane foaming showed the massive potential of recycling large amounts of crosslinked polyethylene in foams for broad applications in food packaging, house insulation, and sound reduction. Sun, 26 Jun 2022 00:00:00 GMT http://hdl.handle.net/10985/22478 2022-06-26T00:00:00Z BAWARETH, Mohammed XU, Weiheng RAVICHANDRAN, Dharneedar ZHU, Yuxiang JAMBHULKAR, Sayli FONSECA, Nathan MIQUELARD-GARNIER, Guillaume VISNANSKY, Camille LOVELADY, Matthew CAMPBELL, William SONG, Kenan Efficient recycling of crosslinked polyethylene has been challenging due to manufacturing difficulties caused by chemical crosslinking. This study focuses on simple processing via solid waste powder generation and particle fining for the subsequent crosslinked polyethylene inclusion and dispersion in rigid polyurethane foam. In addition, the concentration effects of crosslinked polyethylene in polyurethane were studied, showing a well-controlled foam microstructure with uniform pores, retained strength, better thermal degradation resistance, and, more importantly, increased thermal capabilities. Thus, the simple mechanical processing of crosslinked polyethylene and chemical urethane foaming showed the massive potential of recycling large amounts of crosslinked polyethylene in foams for broad applications in food packaging, house insulation, and sound reduction. http://hdl.handle.net/10985/25765 3D printing carbon–carbon composites with multilayered architecture for enhanced multifunctional properties RAVICHANDRAN, Dharneedar; DMOCHOWSKA, Anna; SUNDARAVADIVELAN, Barath; THIPPANNA, Varunkumar; MOTTA DE CASTRO, Emile; PATIL, Dhanush; RAMANATHAN, Arunachalam; ZHU, Yuxiang; SOBCZAK, M. Taylor; ASADI, Amir; PEIXINHO, Jorge; MIQUELARD-GARNIER, Guillaume; SONG, Kenan Carbon–carbon (C–C) composites are highly sought-after in aviation, automotive, and defense sectors due to their outstanding thermal and thermo-mechanical properties. These composites are highly valued for their exceptional thermal and thermo-mechanical properties, including remarkably low density and coefficient of thermal expansion, which are expected to surpass those of many alloys and other composites in the production of high-grade components. However, the current manufacturing methods for C–C composites are unable to meet market demands due to their high cost, low production speed, and labor-intensive processes, limiting their broader applications. This study presents an innovative approach by introducing a new extrusion-based 3D printing method using multiphase direct ink writing (MDIW) for C–C composite fabrication. The primary matrix utilized is a phenol-formaldehyde thermosetting resin, reinforced with silicon carbide (SiC) and graphite nanopowder (Gnp), focusing on achieving simple, scalable, and environmentally sustainable production of green parts with enhanced polymer matrix. This is followed by an inert carbonization process to obtain the final C–C composites. The research emphasizes the careful optimization of curing and rheological properties, including the use of suitable viscosity modifiers like carbon black (CB). Furthermore, the MDIW process demonstrates its capability to pattern dual nanoparticles within the composite structure in a well-ordered manner, leading to improved overall performance. Thermo-mechanical and thermo-electrical properties were thoroughly tested, showcasing the multifunctionality of the composite for diverse applications, from high-value industries like aerospace to broader uses such as heatsinks and electronic packaging. Sat, 01 Jun 2024 00:00:00 GMT http://hdl.handle.net/10985/25765 2024-06-01T00:00:00Z RAVICHANDRAN, Dharneedar DMOCHOWSKA, Anna SUNDARAVADIVELAN, Barath THIPPANNA, Varunkumar MOTTA DE CASTRO, Emile PATIL, Dhanush RAMANATHAN, Arunachalam ZHU, Yuxiang SOBCZAK, M. Taylor ASADI, Amir PEIXINHO, Jorge MIQUELARD-GARNIER, Guillaume SONG, Kenan Carbon–carbon (C–C) composites are highly sought-after in aviation, automotive, and defense sectors due to their outstanding thermal and thermo-mechanical properties. These composites are highly valued for their exceptional thermal and thermo-mechanical properties, including remarkably low density and coefficient of thermal expansion, which are expected to surpass those of many alloys and other composites in the production of high-grade components. However, the current manufacturing methods for C–C composites are unable to meet market demands due to their high cost, low production speed, and labor-intensive processes, limiting their broader applications. This study presents an innovative approach by introducing a new extrusion-based 3D printing method using multiphase direct ink writing (MDIW) for C–C composite fabrication. The primary matrix utilized is a phenol-formaldehyde thermosetting resin, reinforced with silicon carbide (SiC) and graphite nanopowder (Gnp), focusing on achieving simple, scalable, and environmentally sustainable production of green parts with enhanced polymer matrix. This is followed by an inert carbonization process to obtain the final C–C composites. The research emphasizes the careful optimization of curing and rheological properties, including the use of suitable viscosity modifiers like carbon black (CB). Furthermore, the MDIW process demonstrates its capability to pattern dual nanoparticles within the composite structure in a well-ordered manner, leading to improved overall performance. Thermo-mechanical and thermo-electrical properties were thoroughly tested, showcasing the multifunctionality of the composite for diverse applications, from high-value industries like aerospace to broader uses such as heatsinks and electronic packaging. http://hdl.handle.net/10985/25764 Ink-Based Additive Manufacturing of a Polymer/Coal Composite: A Non-Traditional Reinforcement SUNDARAVADIVELAN, Barath; RAVICHANDRAN, Dharneedar; DMOCHOWSKA, Anna; PATIL, Dhanush; THUMMALAPALLI, Sri Vaishnavi; RAMANATHAN, Arunachalam; PEIXINHO, Jorge; MIQUELARD-GARNIER, Guillaume; SONG, Kenan Coal, a crucial natural resource traditionally employed for generating carbonrich materials and powering global industries, has faced escalating scrutiny due to its adverse environmental impacts outweighing its utility in the contemporary world. In response to the worldwide shift toward sustainability, the United States alone has witnessed an approximate 50% reduction in coal consumption. Nevertheless, the ample availability of coal has spurredinterest in identifying alternative sustainable applications. This research delves into the feasibility of utilizing coal as a nonconventional carbon-rich reinforcement in direct ink writing (DIW)-based 3D printing techniques. Our investigation here involves a thermosetting resin serving as a matrix, incorporating pulverized coal (250 μm in size) and carbon black as the reinforcement and a viscosity modifier, respectively. The ink formulation is meticulously designed to exhibit shear-thinning behavior essential for DIW 3D printing, ensuring uniform and continuous printing. Mechanical properties are assessed through the 3D printing of ASTM standard specimens to validate the reinforcing impact. Remarkably, the study reveals that a 2 wt % coal concentration in the ink leads to a substantial improvement in both tensile and flexural properties, resulting in enhancements of 35 and 12.5%, respectively. Additionally, the research demonstrates the printability of various geometries with coal as reinforcement, opening up new possibilities for coal utilization while pursuing more sustainable manufacturing and applications. Wed, 01 May 2024 00:00:00 GMT http://hdl.handle.net/10985/25764 2024-05-01T00:00:00Z SUNDARAVADIVELAN, Barath RAVICHANDRAN, Dharneedar DMOCHOWSKA, Anna PATIL, Dhanush THUMMALAPALLI, Sri Vaishnavi RAMANATHAN, Arunachalam PEIXINHO, Jorge MIQUELARD-GARNIER, Guillaume SONG, Kenan Coal, a crucial natural resource traditionally employed for generating carbonrich materials and powering global industries, has faced escalating scrutiny due to its adverse environmental impacts outweighing its utility in the contemporary world. In response to the worldwide shift toward sustainability, the United States alone has witnessed an approximate 50% reduction in coal consumption. Nevertheless, the ample availability of coal has spurredinterest in identifying alternative sustainable applications. This research delves into the feasibility of utilizing coal as a nonconventional carbon-rich reinforcement in direct ink writing (DIW)-based 3D printing techniques. Our investigation here involves a thermosetting resin serving as a matrix, incorporating pulverized coal (250 μm in size) and carbon black as the reinforcement and a viscosity modifier, respectively. The ink formulation is meticulously designed to exhibit shear-thinning behavior essential for DIW 3D printing, ensuring uniform and continuous printing. Mechanical properties are assessed through the 3D printing of ASTM standard specimens to validate the reinforcing impact. Remarkably, the study reveals that a 2 wt % coal concentration in the ink leads to a substantial improvement in both tensile and flexural properties, resulting in enhancements of 35 and 12.5%, respectively. Additionally, the research demonstrates the printability of various geometries with coal as reinforcement, opening up new possibilities for coal utilization while pursuing more sustainable manufacturing and applications. http://hdl.handle.net/10985/24729 3D Printing‐Enabled Design and Manufacturing Strategies for Batteries: A Review FONSECA, Nathan; THUMMALAPALLI, Sri Vaishnavi; JAMBHULKAR, Sayli; RAVICHANDRAN, Dharneedar; ZHU, Yuxiang; PATIL, Dhanush; THIPPANNA, Varunkumar; RAMANATHAN, Arunachalam; XU, Weiheng; GUO, Shenghan; KO, Hyunwoong; FAGADE, Mofe; KANNAN, Arunchala M.; NIAN, Qiong; ASADI, Amir; MIQUELARD-GARNIER, Guillaume; DMOCHOWSKA, Anna; HASSAN, Mohammad K.; AL-EJJI, Maryam Maryam; EL-DESSOUKY, Hassan M.; STAN, Felicia; SONG, Kenan Lithium-ion batteries (LIBs) have significantly impacted the daily lives, finding broad applications in various industries such as consumer electronics, electric vehicles, medical devices, aerospace, and power tools. However, they still face issues (i.e., safety due to dendrite propagation, manufacturing cost, random porosities, and basic & planar geometries) that hinder their widespread applications as the demand for LIBs rapidly increases in all sectors due to their high energy and power density values compared to other batteries. Additive manufacturing (AM) is a promising technique for creating precise and programmable structures in energy storage devices. This review first summarizes light, filament, powder, and jetting-based 3D printing methods with the status on current trends and limitations for each AM technology. The paper also delves into 3D printing-enabled electrodes (both anodes and cathodes) and solid-state electrolytes for LIBs, emphasizing the current state-of-the-art materials, manufacturing methods, and properties/performance. Additionally, the current challenges in the AM for electrochemical energy storage (EES) applications, including limited materials, low processing precision, codesign/comanufacturing concepts for complete battery printing, machine learning (ML)/artificial intelligence (AI) for processing optimization and data analysis, environmental risks, and the potential of 4D printing in advanced battery applications, are also presented. Sun, 01 Jan 2023 00:00:00 GMT http://hdl.handle.net/10985/24729 2023-01-01T00:00:00Z FONSECA, Nathan THUMMALAPALLI, Sri Vaishnavi JAMBHULKAR, Sayli RAVICHANDRAN, Dharneedar ZHU, Yuxiang PATIL, Dhanush THIPPANNA, Varunkumar RAMANATHAN, Arunachalam XU, Weiheng GUO, Shenghan KO, Hyunwoong FAGADE, Mofe KANNAN, Arunchala M. NIAN, Qiong ASADI, Amir MIQUELARD-GARNIER, Guillaume DMOCHOWSKA, Anna HASSAN, Mohammad K. AL-EJJI, Maryam Maryam EL-DESSOUKY, Hassan M. STAN, Felicia SONG, Kenan Lithium-ion batteries (LIBs) have significantly impacted the daily lives, finding broad applications in various industries such as consumer electronics, electric vehicles, medical devices, aerospace, and power tools. However, they still face issues (i.e., safety due to dendrite propagation, manufacturing cost, random porosities, and basic & planar geometries) that hinder their widespread applications as the demand for LIBs rapidly increases in all sectors due to their high energy and power density values compared to other batteries. Additive manufacturing (AM) is a promising technique for creating precise and programmable structures in energy storage devices. This review first summarizes light, filament, powder, and jetting-based 3D printing methods with the status on current trends and limitations for each AM technology. The paper also delves into 3D printing-enabled electrodes (both anodes and cathodes) and solid-state electrolytes for LIBs, emphasizing the current state-of-the-art materials, manufacturing methods, and properties/performance. Additionally, the current challenges in the AM for electrochemical energy storage (EES) applications, including limited materials, low processing precision, codesign/comanufacturing concepts for complete battery printing, machine learning (ML)/artificial intelligence (AI) for processing optimization and data analysis, environmental risks, and the potential of 4D printing in advanced battery applications, are also presented.