Article
Chemistry, Physical
Raji Saraswathy, Govind Kumar Sharma, Kuttan Prabhakaran
Summary: A simple method of producing carbon foams by assembling short vermicelli rods and bonding them using phenol-formaldehyde. The carbonized vermicelli rods exhibit ductility during carbonization, promoting the nucleation and growth of bubbles due to water vapor generated by the condensation of starch. The carbon foam has an open void space and closed cellular pores with a broad range of cell sizes.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Gengsheng Liu, Zhaolei Ma, Guoxian Li, Wei Yu, Peng Wang, Chuizhou Meng, Shijie Guo
Summary: This study presents the design and fabrication of a solid-state zinc-air microbattery (ZAmB) using a facile 3D direct printing technique. By optimizing the printing ink composition, interdigital electrodes, gel electrolyte, and encapsulation frame are printed with a customized design, achieving an ultrahigh thickness of 2.5 mm and specific areal energy of 77.2 mWh cm-2. Battery modules consisting of individual ZAmBs connected in series or parallel are printed for practical powering of various devices. The 3D direct printing technique allows for adjustable form factor and integration capability, enabling exploration of new energy systems with diverse structures and extended functionalities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Simon Faba, Marina P. Arrieta, Angel Aguero, Alejandra Torres, Julio Romero, Adrian Rojas, Maria Jose Galotto
Summary: This article proposes a method using supercritical carbon dioxide (scCO(2)) to obtain compostable bionanocomposite foams based on PLA and organoclay. The foams showed a closed cell and uniform cell structure with enhanced thermal stability and improved overall mechanical performance. The water uptake behavior demonstrated that the foams had low water absorption, and they also disintegrated under composting conditions. Therefore, these bionanocomposite foams seem to be a promising sustainable alternative for applications such as food packaging.
Article
Materials Science, Composites
Younghoon Kwon, Soyoung E. Seo, Jaejun Lee, Szabolcs Berezvai, Javier Read de Alaniz, Claus D. Eisenbach, Robert M. McMeeking, Craig J. Hawker, Megan T. Valentine
Summary: Additive manufacturing allows the creation of bio-inspired materials with complex architectures and diverse properties. By using a digital light processing strategy, polymer foams with controlled porosity were 3D printed by incorporating thermally expandable microspheres. The foams showed remarkable resilience under cyclic loading, maintaining their modulus and energy dissipation even at large deformations.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Jyun-Ran Chen, Jing-Ru Chen, Cheng-Kuan Su
Summary: In this study, post-printing treatment was used to enhance the performance of devices manufactured using traditional 3D printing technologies. By treating the polyamide 6 (PA6) monolithic packing with formic acid and sodium bicarbonate solutions, the extraction of various metal ions was significantly improved.
Article
Engineering, Multidisciplinary
Huan Jiang, Aaron Coomes, Zhennan Zhang, Hannah Ziegler, Yanyu Chen
Summary: By investigating the effects of graded designs on compressive mechanical performance of 3D printed architected polymer foams, it was found that hybrid foam exhibited significant enhancement in specific energy absorption and stiffness compared to uniform foam, graded binder foam, and graded thickness foam. The specific energy absorption and stiffness of the hybrid graded foam also outperformed lattice-based and shell-based graded foams. These findings provide a new avenue for engineering architected materials with enhanced mechanical properties for a wide range of applications.
COMPOSITES PART B-ENGINEERING
(2021)
Review
Chemistry, Physical
Xiaocong Tian, Bingang Xu
Summary: This article discusses the application of 3D printing in solid-state energy storage, focusing on 3D printing principles and key issues in solid-state energy storage, as well as summarizing recent advances in 3D printed solid-state EESDs. The paper highlights the significant role of 3D printing in promoting the future development of solid-state EESDs.
Article
Chemistry, Multidisciplinary
Ryan Mendenhall, Babak Eslami
Summary: Four-dimensional printing is a process that transforms 3D-printed objects through heating and cooling, providing temperature guidelines for mass manufacturing of complex geometries.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Sarat Singamneni, Malaya Prasad Behera, Derryn Truong, Marie Joo Le Guen, Elspeth Macrae, Kim Pickering
Summary: Fused deposition modelling is a popular 3D printing method that can use pellets and not just filament raw materials. Direct printing of softer PLA composite based on pellets is proposed for thermosensitive polymers, achieving comparable mechanical performance to injection moulded counterparts.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Characterization & Testing
Juraj Svatik, Petr Lepcio, Frantisek Ondreas, Klara Zarybnicka, Marek Zboncak, Premysl Mencik, Josef Jancar
Summary: Bioinspired structures can achieve mechanical properties beyond conventional artificial materials. By using FDM 3D printing to manufacture porous bamboo-inspired structures of unmodified PLA, the toughening of PLA solely by the pore gradient was introduced for the first time, showing improvements in ductility and work at break. This could potentially enable the use of gradient porous materials in structural components and lay a foundation for the future design of toughened 3D printed structures.
Article
Polymer Science
Du Ngoc Uy Lan, Christian Bethke, Volker Altstadt, Holger Ruckdaschel
Summary: This study presents a new method for preparing epoxy foams, called solid-state carbamate foaming technique. By changing the ratio of hardener and carbamate, epoxy foams with uniform density were successfully obtained, and they have a high glass transition temperature and storage modulus.
Article
Engineering, Manufacturing
Mingqi Ding, Dawei Xu, Qi Wang
Summary: In this study, syndiotactic polypropylene powders with low melting point and carbon nanotubes coating were used as the microwave absorbing medium to successfully fabricate modified polypropylene composite foam with superior mechanical properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Pengzhi Li, Bin Lan, Qiang Zhang, Qi Yang, Pengjian Gong, Chul B. Park, Guangxian Li
Summary: This work proposes a novel strategy combining nano-fibrillation network and supercritical carbon dioxide solid-state foaming to simultaneously strengthen and toughen foam materials. By utilizing different techniques in designing micro and nano-scale structures, a microcellular foam with large expansion ratio and small cell size was obtained, while improving compression strength and impact toughness.
Article
Polymer Science
Miroslav Muller, Vladimir Sleger, Viktor Kolar, Monika Hromasova, Dominik Pis, Rajesh Kumar Mishra
Summary: The current research focuses on evaluating the fatigue behavior of pure PLA and PLA reinforced with natural fillers like pinewood, bamboo, and cork, showing that their fatigue life is similar under the same loading conditions. The presence of natural fillers did not reduce the material's ability to respond to low-cycle fatigue, and cyclic testing did not significantly affect the tensile strength and durability of PLA-based materials. Furthermore, under cyclic loading, the visco-elastic behavior of tested materials increased, along with the presence of porosity and good interfacial compatibility with biological fillers as shown by SEM analysis.
Review
Chemistry, Multidisciplinary
Liam Krueger, Jared A. Miles, Amirali Popat
Summary: 3D printing is rapidly expanding in the pharmaceutical and healthcare fields, allowing for precise control of dosage and multiple aesthetic features of dosage forms. The development of hybrid materials is gaining momentum, particularly in the context of FDM technology.
JOURNAL OF CONTROLLED RELEASE
(2022)
Article
Materials Science, Multidisciplinary
Venkateshwarlu Kakumanu, Sriharsha Srinivas Sundarram
Article
Engineering, Chemical
Sriharsha S. Sundarram, Wei Li
POLYMER ENGINEERING AND SCIENCE
(2013)
Article
Materials Science, Multidisciplinary
Brenna McAllister, Mohammed Thajudeen, Shelley Phelan, Sriharsha Srinivas Sundarram
Summary: A novel method combining additive manufacturing and solid-state foaming is presented to fabricate dual porous tissue scaffolds. The obtained scaffolds have controllable macro- and micropore sizes and can support cell adhesion, proliferation, and viability. The method has the potential to aid in the development of bioartificial organs.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Engineering, Chemical
Dylan Weber, Sriharsha Srinivas Sundarram
Summary: Structures currently used for energy absorption include foams, composites, and honeycombs. Recent studies have shown that triply periodic minimal surfaces (TPMS) have potential for energy absorption and weight reduction. This study introduces three TPMS lattice structures, namely the Gyroid, Fischer-Koch S, and PMY, which are 3D printed using polylactic acid in uniform and graded densities. The structures are then foamed and characterized for porosity, compressive properties, energy absorption, and thermal properties. The results demonstrate that the energy absorption values of the uniform and graded density structures are similar as long as their average density is similar, with the foamed PMY structures exhibiting the highest energy absorption value. The foaming process increases the porosity but does not improve the energy absorption characteristics.
POLYMER ENGINEERING AND SCIENCE
(2023)
Proceedings Paper
Engineering, Manufacturing
Venkateshwarlu Kakumanu, Sriharsha Srinivas Sundarram
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2018, VOL 2
(2019)
Proceedings Paper
Engineering, Mechanical
David Jose, Christopher Gutierrez, Sriharsha Srinivas Sundarram
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 14
(2017)