1
|
Kalinke C, Crapnell RD, de Oliveira PR, Janegitz BC, Bonacin JA, Banks CE. How to Improve Sustainability in Fused Filament Fabrication (3D Printing) Research? GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2300408. [PMID: 39006060 PMCID: PMC11237179 DOI: 10.1002/gch2.202300408] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 04/11/2024] [Indexed: 07/16/2024]
Abstract
This review aims to provide an overview of sustainable approaches that can be incorporated into well-known procedures for the development of materials, pre- and post-treatments, modifications, and applications of 3D-printed objects, especially for fused filament fabrication (FFF). Different examples of conductive and non-conductive bespoke filaments using renewable biopolymers, bioplasticizers, and recycled materials are presented and discussed. The main final characteristics of the polymeric materials achieved according to the feedstock, preparation, extrusion, and treatments are also covered. In addition to recycling and remanufacturing, this review also explores other alternative approaches that can be adopted to enhance the sustainability of methods, aiming to produce efficient and environmentally friendly 3D printed products. Adjusting printing parameters and miniaturizing systems are also highlighted in this regard. All these recommended strategies are employed to minimize environmental damage, while also enabling the production of high-quality, economical materials and 3D printed systems. These efforts align with the principles of Green Chemistry, Sustainable Development Goals (SDGs), 3Rs (Reduce, Reuse, Recycle), and Circular Economy concepts.
Collapse
Affiliation(s)
- Cristiane Kalinke
- Institute of ChemistryUniversity of Campinas (UNICAMP)CampinasSão Paulo13083–859Brazil
- Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetManchesterM1 5GDUK
| | - Robert D. Crapnell
- Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetManchesterM1 5GDUK
| | - Paulo R. de Oliveira
- Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetManchesterM1 5GDUK
- Department of Nature SciencesMathematics, and EducationFederal University of São Carlos (UFSCar)ArarasSão Paulo13600–970Brazil
| | - Bruno C. Janegitz
- Department of Nature SciencesMathematics, and EducationFederal University of São Carlos (UFSCar)ArarasSão Paulo13600–970Brazil
| | - Juliano A. Bonacin
- Institute of ChemistryUniversity of Campinas (UNICAMP)CampinasSão Paulo13083–859Brazil
| | - Craig E. Banks
- Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetManchesterM1 5GDUK
| |
Collapse
|
2
|
Djonyabe Habiba R, Malça C, Branco R. Exploring the Potential of Recycled Polymers for 3D Printing Applications: A Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2915. [PMID: 38930283 PMCID: PMC11205834 DOI: 10.3390/ma17122915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024]
Abstract
The integration of recycled polymers into additive manufacturing (AM) processes offers a promising opportunity for advancing sustainability within the manufacturing industry. This review paper summarizes existing research and developments related to the use of recycled materials in AM, focusing on distinct polymers, such as polylactic acid (PLA), polyethylene terephthalate (PET), and acrylonitrile butadiene styrene (ABS), among others. Key topics explored include the availability of recycled filaments on the market, challenges associated with material variability and traceability, and efforts toward establishing ethical product standards and sustainability characterization methodologies. Regulatory considerations and standards development by organizations such as ASTM and ISO are discussed, along with recommendations for future advancements in improving the sustainability of filament recycling and achieving net-zero emissions in AM processes. The collective efforts outlined in this paper underscore the potential of recycled polymers in AM to foster a more sustainable and environmentally friendly manufacturing industry.
Collapse
Affiliation(s)
- Rachel Djonyabe Habiba
- Centre for Rapid and Sustainable Product Development (CDRSP), Polytechnic Institute of Leiria (IPL), 2430 Marinha Grande, Portugal; (R.D.H.); (C.M.)
| | - Cândida Malça
- Centre for Rapid and Sustainable Product Development (CDRSP), Polytechnic Institute of Leiria (IPL), 2430 Marinha Grande, Portugal; (R.D.H.); (C.M.)
- Coimbra Institute of Engineering (ISEC), Polytechnic Institute of Coimbra (IPC), Rua Pedro Nunes–Quinta da Nora, 3030-199 Coimbra, Portugal
| | - Ricardo Branco
- CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Luis Reis Santos, 3030-788 Coimbra, Portugal
| |
Collapse
|
3
|
de Deus BCT, Costa TC, Altomari LN, Brovini EM, de Brito PSD, Cardoso SJ. Coastal plastic pollution: A global perspective. MARINE POLLUTION BULLETIN 2024; 203:116478. [PMID: 38735173 DOI: 10.1016/j.marpolbul.2024.116478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 04/21/2024] [Accepted: 05/06/2024] [Indexed: 05/14/2024]
Abstract
Coastal ecosystems have ecological importance worldwide and require control and prevention measures to mitigate human pollution. The objective of this study was to perform a systematic review to provide a comprehensive overview of the global issue of coastal plastic pollution. 689 articles were eligible for qualitative synthesis and 31 were considered for quantitative analysis. There was an exponential increase in articles addressing coastal plastic pollution over the past 50 years. Studies were mainly carried out on beaches, and plastic bottles were the most found item, followed by cigarette butts. Polyethylene was the predominant plastic polymer, and white microplastic fragments stood out. China published most articles on the topic and Brazil had the highest number of sites sampled. Meta-analysis had significant effect sizes based on the reported data. These findings carry significant implications for environmental policies, waste management practices, and targeted awareness campaigns aimed at mitigating plastic pollution.
Collapse
Affiliation(s)
- Beatriz Corrêa Thomé de Deus
- Postgraduate Program in Biodiversity and Nature Conservation, Institute of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, 36036-900, São Pedro, Juiz de Fora, Minas Gerais, Brazil
| | - Thaiane Cantarino Costa
- Postgraduate Program in Biodiversity and Nature Conservation, Institute of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, 36036-900, São Pedro, Juiz de Fora, Minas Gerais, Brazil
| | - Leslie Nascimento Altomari
- Postgraduate Program in Biodiversity and Nature Conservation, Institute of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, 36036-900, São Pedro, Juiz de Fora, Minas Gerais, Brazil
| | - Emília Marques Brovini
- Postgraduate Program in Environmental Engineering, Federal University of Ouro Preto, Campus Universitário, Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Paulo Sérgio Duque de Brito
- VALORIZA Research Centre, Polytechnic Institute of Portalegre, Campus Politécnico, 10, 7300-555 Portalegre, Portalegre, Portugal
| | - Simone Jaqueline Cardoso
- Postgraduate Program in Biodiversity and Nature Conservation, Institute of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, 36036-900, São Pedro, Juiz de Fora, Minas Gerais, Brazil; Department of Zoology, Institute of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, 36036-900, São Pedro, Juiz de Fora, Minas Gerais, Brazil.
| |
Collapse
|
4
|
Patti A. Challenges to Improve Extrusion-Based Additive Manufacturing Process of Thermoplastics toward Sustainable Development. Macromol Rapid Commun 2024:e2400249. [PMID: 38818529 DOI: 10.1002/marc.202400249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/20/2024] [Indexed: 06/01/2024]
Abstract
This review aims to present the different approaches to lessen the environmental impact of the extrusion-based additive manufacturing (MEX) process of thermoplastic-based resins and protect the ecosystem. The benefits and drawbacks of each alternative, including the use of biomaterials or recycled materials as feedstock, energy efficiency, and polluting emissions reduction, have been examined. First, the technological option of using a pellet-fed printer was compared to a filament-fed printer. Then, common biopolymers utilized in MEX applications are discussed, along with methods for improving the mechanical properties of associated printed products. The introduction of natural fillers in thermoplastic resins and the use of biocomposite filaments have been proposed to improve the specific performance of printed items, highlighting the numerous challenges related to their extrusion. Various polymers and fillers derived from recycling are presented as feeding raw materials for printers to reduce waste accumulation, showing the inferior qualities of the resulting goods when compared to printed products made from virgin materials. Finally, the energy consumption and emissions released into the atmosphere during the printing process are discussed, with the potential for both aspects to be controlled through material selection and operating conditions.
Collapse
Affiliation(s)
- Antonella Patti
- Department of Civil Engineering and Architecture (DICAr), University of Catania, Viale Andrea Doria 6, Catania, CT, 95125, Italy
| |
Collapse
|
5
|
Ralls AM, Monette Z, Kasar AK, Menezes PL. Enhancing Tribological Performance of Self-Lubricating Composite via Hybrid 3D Printing and In Situ Spraying. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2601. [PMID: 38893868 PMCID: PMC11173934 DOI: 10.3390/ma17112601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/13/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024]
Abstract
In this work, a self-lubricating composite was manufactured using a novel hybrid 3D printing/in situ spraying process that involved the printing of an acrylonitrile butadiene styrene (ABS) matrix using fused deposition modeling (FDM), along with the in situ spraying of alumina (Al2O3) and hexagonal boron nitride (hBN) reinforcements during 3D printing. The results revealed that the addition of the reinforcement induced an extensive formation of micropores throughout the ABS structure. Under tensile-loading conditions, the mechanical strength and cohesive interlayer bonding of the composites were diminished due to the presence of these micropores. However, under tribological conditions, the presence of the Al2O3 and hBN reinforcement improved the frictional resistance of ABS in extreme loading conditions. This improvement in frictional resistance was attributed to the ability of the Al2O3 reinforcement to support the external tribo-load and the shearing-like ability of hBN reinforcement during sliding. Collectively, this work provides novel insights into the possibility of designing tribologically robust ABS components through the addition of in situ-sprayed ceramic and solid-lubricant reinforcements.
Collapse
Affiliation(s)
| | | | | | - Pradeep L. Menezes
- Department of Mechanical Engineering, University of Nevada Reno, Reno, NV 89557, USA; (A.M.R.); (Z.M.); (A.K.K.)
| |
Collapse
|
6
|
Szechyńska-Hebda M, Hebda M, Doğan-Sağlamtimur N, Lin WT. Let's Print an Ecology in 3D (and 4D). MATERIALS (BASEL, SWITZERLAND) 2024; 17:2194. [PMID: 38793260 PMCID: PMC11122764 DOI: 10.3390/ma17102194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/01/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024]
Abstract
The concept of ecology, historically rooted in the economy of nature, currently needs to evolve to encompass the intricate web of interactions among humans and various organisms in the environment, which are influenced by anthropogenic forces. In this review, the definition of ecology has been adapted to address the dynamic interplay of energy, resources, and information shaping both natural and artificial ecosystems. Previously, 3D (and 4D) printing technologies have been presented as potential tools within this ecological framework, promising a new economy for nature. However, despite the considerable scientific discourse surrounding both ecology and 3D printing, there remains a significant gap in research exploring the interplay between these directions. Therefore, a holistic review of incorporating ecological principles into 3D printing practices is presented, emphasizing environmental sustainability, resource efficiency, and innovation. Furthermore, the 'unecological' aspects of 3D printing, disadvantages related to legal aspects, intellectual property, and legislation, as well as societal impacts, are underlined. These presented ideas collectively suggest a roadmap for future research and practice. This review calls for a more comprehensive understanding of the multifaceted impacts of 3D printing and the development of responsible practices aligned with ecological goals.
Collapse
Affiliation(s)
| | - Marek Hebda
- Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland;
| | | | - Wei-Ting Lin
- Department of Civil Engineering, National Ilan University, No. 1, Sec. 1, Shennong Rd., I-Lan 260, Taiwan;
| |
Collapse
|
7
|
Maraveas C, Kyrtopoulos IV, Arvanitis KG. Evaluation of the Viability of 3D Printing in Recycling Polymers. Polymers (Basel) 2024; 16:1104. [PMID: 38675022 PMCID: PMC11054724 DOI: 10.3390/polym16081104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
The increased use of plastics in industrial and agricultural applications has led to high levels of pollution worldwide and is a significant challenge. To address this plastic pollution, conventional methods such as landfills and incineration are used, leading to further challenges such as the generation of greenhouse gas emissions. Therefore, increasing interest has been directed to identifying alternative methods to dispose of plastic waste from agriculture. The novelty of the current research arose from the lack of critical reviews on how 3-Dimensional (3D) printing was adopted for recycling plastics, its application in the production of agricultural plastics, and its specific benefits, disadvantages, and limitations in recycling plastics. The review paper offers novel insights regarding the application of 3D printing methods including Fused Particle Fabrication (FPF), Hot Melt Extrusion (HME), and Fused Deposition Modelling (FDM) to make filaments from plastics. However, the methods were adopted in local recycling setups where only small quantities of the raw materials were considered. Data was collected using a systematic review involving 39 studies. Findings showed that the application of the 3D printing methods led to the generation of agricultural plastics such as Polylactic Acid (PLA), Acrylonitrile Butadiene Styrene (ABS), Polyethylene Terephthalate (PET), and High-Density Polyethylene (HDPE), which were found to have properties comparable to those of virgin plastic, suggesting the viability of 3D printing in managing plastic pollution. However, limitations were also associated with the 3D printing methods; 3D-printed plastics deteriorated rapidly under Ultraviolet (UV) light and are non-biodegradable, posing further risks of plastic pollution. However, UV stabilization helps reduce plastic deterioration, thus increasing longevity and reducing disposal. Future directions emphasize identifying methods to reduce the deterioration of 3D-printed agricultural plastics and increasing their longevity in addition to UV stability.
Collapse
Affiliation(s)
- Chrysanthos Maraveas
- Department of Natural Resources Development and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Street, 11855 Athens, Greece; (I.V.K.); (K.G.A.)
| | | | | |
Collapse
|
8
|
Kumar M, Bhujbal SK, Kohli K, Prajapati R, Sharma BK, Sawarkar AD, Abhishek K, Bolan S, Ghosh P, Kirkham MB, Padhye LP, Pandey A, Vithanage M, Bolan N. A review on value-addition to plastic waste towards achieving a circular economy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171106. [PMID: 38387564 DOI: 10.1016/j.scitotenv.2024.171106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/12/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
Plastic and mixed plastic waste (PW) has received increased worldwide attention owing to its huge rate of production, high persistency in the environment, and unsustainable waste management practices. Therefore, sustainable PW management and upcycling approaches are imperative to achieve the objectives of the United Nations Sustainable Development Goals. Numerous recent studies have shown the application and feasibility of various PW conversion techniques to produce materials with better economic value. Within this framework, the current review provides an in-depth analysis of cutting-edge thermochemical technologies such as pyrolysis, gasification, carbonization, and photocatalysis that can be used to value plastic and mixed PW in order to produce energy and industrial chemicals. Additionally, a thorough examination of the environmental impacts of contemporary PW upcycling techniques and their commercial feasibility through life cycle assessment (LCA) and techno-economical assessment are provided in this review. Finally, this review emphasizes the opportunities and challenges accompanying with existing PW upcycling techniques and deliver recommendations for future research works.
Collapse
Affiliation(s)
- Manish Kumar
- Amity Institute of Environmental Sciences, Amity University, Noida, India.
| | - Sachin Krushna Bhujbal
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Kirtika Kohli
- Distillate and Heavy Oil Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India
| | - Ravindra Prajapati
- Prairie Research Institute-Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA
| | - Brajendra K Sharma
- Prairie Research Institute-Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA; United States Department of Agriculture, Agricultural Research Service Eastern Regional Research Center Sustainable Biofuels and Co-Products Research Unit, 600 E. Mermaid Ln., Wyndmoor, PA 19038, USA
| | - Ankush D Sawarkar
- Department of Information Technology, Shri Guru Gobind Singhji Institute of Engineering and Technology (SGGSIET), Nanded, Maharashtra 431 606, India
| | - Kumar Abhishek
- Department of Environment, Forest and Climate Change, Government of Bihar, Patna, India
| | - Shiv Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia
| | - Pooja Ghosh
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India; Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio 70211, Finland
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, USA
| | - Lokesh P Padhye
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India; Kyung Hee University, Kyung Hee Dae Ro 26, Seoul 02447, Republic of Korea; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India; Centre for Energy and Environmental Sustainability, Lucknow 226029, India
| | - Meththika Vithanage
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
| | - Nanthi Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia.
| |
Collapse
|
9
|
Garwacki M, Cudnik I, Dziadowiec D, Szymczak P, Andrzejewski J. The Development of Sustainable Polyethylene Terephthalate Glycol-Based (PETG) Blends for Additive Manufacturing Processing-The Use of Multilayered Foil Waste as the Blend Component. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1083. [PMID: 38473555 DOI: 10.3390/ma17051083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/14/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024]
Abstract
The polymer foil industry is one of the leading producers of plastic waste. The development of new recycling methods for packaging products is one of the biggest demands in today's engineering. The subject of this research was the melt processing of multilayered PET-based foil waste with PETG copolymer. The resulting blends were intended for additive manufacturing processing using the fused deposition modeling (FDM) method. In order to improve the properties of the developed materials, the blends compounding procedure was conducted with the addition of a reactive chain extender (CE) and elastomeric copolymer used as an impact modifier (IM). The samples were manufactured using the 3D printing technique and, for comparison, using the traditional injection molding method. The obtained samples were subjected to a detailed characterization procedure, including mechanical performance evaluation, thermal analysis, and rheological measurements. This research confirms that PET-based film waste can be successfully used for the production of filament, and for most samples, the FDM printing process can be conducted without any difficulties. Unfortunately, the unmodified blends are characterized by brittleness, which makes it necessary to use an elastomer additive (IM). The presence of a semicrystalline PET phase improves the thermal resistance of the prepared blends; however, an annealing procedure is required for this purpose.
Collapse
Affiliation(s)
- Mikołaj Garwacki
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3 Str, 60-965 Poznan, Poland
| | - Igor Cudnik
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3 Str, 60-965 Poznan, Poland
| | - Damian Dziadowiec
- Institute of Materials Technology, Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3 Str, 61-138 Poznan, Poland
- Eurocast Sp. z o.o., Wejherowska 9 Str, 84-220 Strzebielino, Poland
| | - Piotr Szymczak
- Institute of Materials Technology, Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3 Str, 61-138 Poznan, Poland
- Eurocast Sp. z o.o., Wejherowska 9 Str, 84-220 Strzebielino, Poland
| | - Jacek Andrzejewski
- Institute of Materials Technology, Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3 Str, 61-138 Poznan, Poland
| |
Collapse
|
10
|
Olawumi MA, Oladapo BI, Ikumapayi OM, Akinyoola JO. Waste to wonder to explore possibilities with recycled materials in 3D printing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167109. [PMID: 37717760 DOI: 10.1016/j.scitotenv.2023.167109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/14/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023]
Abstract
In a world grappling with environmental challenges and the need for sustainable manufacturing practices, the convergence of 3D printing and recycling emerges as a promising solution. This research paper explores the potential of combining these two technologies and comprehensively analyses their synergistic effects. The study delves into the printability of recycled materials, evaluating their suitability for 3D printing and comparing their performance with conventional materials. The environmental impact of 3D printing with recycled materials is examined through a sustainability analysis and a life cycle assessment of recycled 3D printed objects. The findings reveal significant benefits, including enhanced resource efficiency, waste reduction, and customisation possibilities. The research also identifies challenges and opportunities for scaling up the use of recycled materials in 3D printing, highlighting the importance of collaboration, innovation, and regulations. With potential applications spanning various industries, from prototyping to construction and healthcare, the implications of this research are far-reaching. By embracing sustainable practices, industry collaboration, and innovation, the integration of 3D printing and recycling can pave the way for a more sustainable future, where resource conservation, circularity, and customised production are at the forefront of manufacturing.
Collapse
Affiliation(s)
- Mattew A Olawumi
- School of Engineering and Sustainable Development, De Montfort University, Leicester, United Kingdom
| | - Bankole I Oladapo
- School of Engineering and Sustainable Development, De Montfort University, Leicester, United Kingdom; School of Science and Engineering, University of Dundee, United Kingdom.
| | - Omolayo M Ikumapayi
- Mechanical Mechatronics Engineering, Afe Babalola University, Ado-Ekiti, Nigeria
| | - John O Akinyoola
- Mechanical Mechatronics Engineering, Afe Babalola University, Ado-Ekiti, Nigeria
| |
Collapse
|
11
|
Acierno D, Patti A. Fused Deposition Modelling (FDM) of Thermoplastic-Based Filaments: Process and Rheological Properties-An Overview. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7664. [PMID: 38138805 PMCID: PMC10744784 DOI: 10.3390/ma16247664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
The fused deposition modeling (FDM) process, an extrusion-based 3D printing technology, enables the manufacture of complex geometrical elements. This technology employs diverse materials, including thermoplastic polymers and composites as well as recycled resins to encourage sustainable growth. FDM is used in a variety of industrial fields, including automotive, biomedical, and textiles, as a rapid prototyping method to reduce costs and shorten production time, or to develop items with detailed designs and high precision. The main phases of this technology include the feeding of solid filament into a molten chamber, capillary flow of a non-Newtonian fluid through a nozzle, layer deposition on the support base, and layer-to-layer adhesion. The viscoelastic properties of processed materials are essential in each of the FDM steps: (i) predicting the printability of the melted material during FDM extrusion and ensuring a continuous flow across the nozzle; (ii) controlling the deposition process of the molten filament on the print bed and avoiding fast material leakage and loss of precision in the molded part; and (iii) ensuring layer adhesion in the subsequent consolidation phase. Regarding this framework, this work aimed to collect knowledge on FDM extrusion and on different types of rheological properties in order to forecast the performance of thermoplastics.
Collapse
Affiliation(s)
- Domenico Acierno
- Regional Center of Competence New Technologies for Productive Activities Scarl, Via Nuova Agnano 11, 80125 Naples, Italy;
| | - Antonella Patti
- Department of Civil Engineering and Architecture (DICAr), University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy
| |
Collapse
|
12
|
Kovalski E, Salazar L, Levin D, Kamine TH. A 3D-Printed Portable Sterilizer to Be Used During Surgical Procedures in Spaceflight. Aerosp Med Hum Perform 2023; 94:857-860. [PMID: 37853595 DOI: 10.3357/amhp.6294.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
INTRODUCTION: During spaceflight, it is important to consider the mechanisms by which surgeries and medical procedures can be safely and efficiently conducted. Instruments used to carry out these processes need to be sterilized. Thus, we have designed and tested a three-dimensional-printed (3D-printed) portable sterilizer that implements far ultraviolet-C (Far UV-C) light radiation to disinfect bacteria and microorganisms from surgical instruments.METHODS: The sterilizer was 3D-printed with polylactic acid filament. Effectiveness was assessed through three trials at differing times of sterilization and compared against a control group of no sterilization and against Clorox wipes. Cultures were incubated on agar dishes and counted with ImageJ.RESULTS: Increasing time under Far UV-C light radiation increased the percentage of sterilization up to 100% at 10 min. The 3D-printed sterilizer was significantly better than Clorox wipes and control.DISCUSSION: As sterilization will be necessary for surgical procedures in microgravity and upmass is a significant concern, we have successfully demonstrated a 3D-printable portable sterilizer for surgical instruments that achieves 100% success in using Far UV-C light to disinfect its surface of bacteria with a 10-min sterilizing time. Further research is necessary to test this design in microgravity and with differently sized and shaped instruments.Kovalski E, Salazar L, Levin D, Kamine TH. A 3D-printed portable sterilizer to be used during surgical procedures in spaceflight. Aerosp Med Hum Perform. 2023; 94(11):857-860.
Collapse
|
13
|
Demeco A, Foresti R, Frizziero A, Daracchi N, Renzi F, Rovellini M, Salerno A, Martini C, Pelizzari L, Costantino C. The Upper Limb Orthosis in the Rehabilitation of Stroke Patients: The Role of 3D Printing. Bioengineering (Basel) 2023; 10:1256. [PMID: 38002380 PMCID: PMC10669460 DOI: 10.3390/bioengineering10111256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/22/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Stroke represents the third cause of long-term disability in the world. About 80% of stroke patients have an impairment of bio-motor functions and over half fail to regain arm functionality, resulting in motor movement control disorder with serious loss in terms of social independence. Therefore, rehabilitation plays a key role in the reduction of patient disabilities, and 3D printing (3DP) has showed interesting improvements in related fields, thanks to the possibility to produce customized, eco-sustainable and cost-effective orthoses. This study investigated the clinical use of 3DP orthosis in rehabilitation compared to the traditional ones, focusing on the correlation between 3DP technology, therapy and outcomes. We screened 138 articles from PubMed, Scopus and Web of Science, selecting the 10 articles fulfilling the inclusion criteria, which were subsequently examined for the systematic review. The results showed that 3DP provides substantial advantages in terms of upper limb orthosis designed on the patient's needs. Moreover, seven research activities used biodegradable/recyclable materials, underlining the great potential of validated 3DP solutions in a clinical rehabilitation setting. The aim of this study was to highlight how 3DP could overcome the limitations of standard medical devices in order to support clinicians, bioengineers and innovation managers during the implementation of Healthcare 4.0.
Collapse
Affiliation(s)
- Andrea Demeco
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Ruben Foresti
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
- Center of Excellence for Toxicological Research (CERT), University of Parma, 43126 Parma, Italy
- Italian National Research Council, Institute of Materials for Electronics and Magnetism (CNR-IMEM), 43124 Parma, Italy
| | - Antonio Frizziero
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Nicola Daracchi
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Francesco Renzi
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Margherita Rovellini
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Antonello Salerno
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Chiara Martini
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| | - Laura Pelizzari
- AUSL Piacenza, Neurorehabilitation and Spinal Unit, Department of Rehabilitative Medicine, 29121 Piacenza, Italy;
| | - Cosimo Costantino
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (A.F.); (N.D.); (F.R.); (M.R.); (A.S.); (C.M.); (C.C.)
| |
Collapse
|
14
|
Sola A, Trinchi A. Recycling as a Key Enabler for Sustainable Additive Manufacturing of Polymer Composites: A Critical Perspective on Fused Filament Fabrication. Polymers (Basel) 2023; 15:4219. [PMID: 37959900 PMCID: PMC10649055 DOI: 10.3390/polym15214219] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Additive manufacturing (AM, aka 3D printing) is generally acknowledged as a "green" technology. However, its wider uptake in industry largely relies on the development of composite feedstock for imparting superior mechanical properties and bespoke functionality. Composite materials are especially needed in polymer AM, given the otherwise poor performance of most polymer parts in load-bearing applications. As a drawback, the shift from mono-material to composite feedstock may worsen the environmental footprint of polymer AM. This perspective aims to discuss this chasm between the advantage of embedding advanced functionality, and the disadvantage of causing harm to the environment. Fused filament fabrication (FFF, aka fused deposition modelling, FDM) is analysed here as a case study on account of its unparalleled popularity. FFF, which belongs to the material extrusion (MEX) family, is presently the most widespread polymer AM technique for industrial, educational, and recreational applications. On the one hand, the FFF of composite materials has already transitioned "from lab to fab" and finally to community, with far-reaching implications for its sustainability. On the other hand, feedstock materials for FFF are thermoplastic-based, and hence highly amenable to recycling. The literature shows that recycled thermoplastic materials such as poly(lactic acid) (PLA), acrylonitrile-butadiene-styrene (ABS), and polyethylene terephthalate (PET, or its glycol-modified form PETG) can be used for printing by FFF, and FFF printed objects can be recycled when they are at the end of life. Reinforcements/fillers can also be obtained from recycled materials, which may help valorise waste materials and by-products from a wide range of industries (for example, paper, food, furniture) and from agriculture. Increasing attention is being paid to the recovery of carbon fibres (for example, from aviation), and to the reuse of glass fibre-reinforced polymers (for example, from end-of-life wind turbines). Although technical challenges and economical constraints remain, the adoption of recycling strategies appears to be essential for limiting the environmental impact of composite feedstock in FFF by reducing the depletion of natural resources, cutting down the volume of waste materials, and mitigating the dependency on petrochemicals.
Collapse
Affiliation(s)
- Antonella Sola
- Advanced Materials and Processing, Manufacturing Business Unit, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, Melbourne, VIC 3169, Australia
| | - Adrian Trinchi
- Advanced Materials and Processing, Manufacturing Business Unit, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, Melbourne, VIC 3169, Australia
| |
Collapse
|
15
|
Oladapo BI, Bowoto OK, Adebiyi VA, Ikumapayi OM. Net zero on 3D printing filament recycling: A sustainable analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 894:165046. [PMID: 37355139 DOI: 10.1016/j.scitotenv.2023.165046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/18/2023] [Accepted: 06/19/2023] [Indexed: 06/26/2023]
Abstract
As global concerns about climate change and resource scarcity grow, the need for sustainable practices in manufacturing is becoming increasingly important. 3D printing, a rapidly developing technology, has the potential to mitigate environmental impacts by reducing material waste and enabling decentralised production. This article investigates the sustainability of 3D printing filament recycling, focusing on achieving net-zero emissions. We analyse the environmental impact, energy consumption, and potential for reducing waste in filament recycling and provide recommendations for improving sustainability. Recycling these filaments has been identified as a potential solution to reduce the amount of plastic waste generated. This paper explores the concept of achieving net zero on 3D printing filament recycling, focusing on the sustainable analysis of the process. A literature review was conducted to understand the current state of 3D printing filament recycling and the challenges of achieving net zero. The review was supplemented with interviews with industry experts to gain a more in-depth understanding of the challenges and potential solutions. The results show that achieving net zero on 3D printing filament recycling is possible. However, it requires a holistic approach that considers the entire lifecycle of the filament. The paper discusses the implications of achieving net zero on 3D printing filament recycling for sustainability and the circular economy.
Collapse
Affiliation(s)
- Bankole I Oladapo
- Mechanical and Electronic Engineering, School of Science and Engineering, University of Dundee, Dundee, United Kingdom; School of Engineering and Sustainable Development, De Montfort University, Leicester, United Kingdom.
| | - Oluwole K Bowoto
- University of Bolton, Department of Mechanical Engineering, Bolton, United Kingdom
| | - Victor A Adebiyi
- Centre for Agroecology, Water and Resilience (CAWR), Coventry University, Department: Fundamental Processes and Resilience, United Kingdom
| | - Omolayo M Ikumapayi
- Mechanical Mechatronics Engineering, Afe Babalola University, Ado-Ekiti, Nigeria
| |
Collapse
|
16
|
García-Sobrino R, Cortés A, Calderón-Villajos R, Díaz JG, Muñoz M. Novel and Accessible Physical Recycling for Expanded Polystyrene Waste with the Use of Acetone as a Solvent and Additive Manufacturing (Direct Ink-Write 3D Printing). Polymers (Basel) 2023; 15:3888. [PMID: 37835938 PMCID: PMC10575267 DOI: 10.3390/polym15193888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
The current high production of plastics has prompted the exploration of alternative pathways to facilitate recycling, aiming for a progressively sustainable society. This paper presents an alternative and affordable technology for treating waste expanded polystyrene (EPS) mixed with acetone in a 100:1 volume ratio to be used as 3D printing ink for Direct Ink Write technology. In order to optimize the printing parameters, a comprehensive study was conducted, evaluating different needle diameters, printing speeds, and bed temperature values to achieve homogenous pieces and a highly repeatable 3D printing process. Results showed that the main optimum printing parameters were using needles with diameters of 14 to 16 G and printing speeds ranging from 2 to 12 mm/s, which were found to yield the most uniform ribbons. Increasing the bed temperature, despite favoring acetone evaporation, led to the generation of more heterogeneous structures due to void growth inside the printed ribbons. Thus, employing room temperature for the bed proved to be the optimal value. Lastly, a comparative study between the starting material and the EPS after the printing process was conducted using FTIR-ATR and GPC analyses, ensuring the preservation of the original polymer's integrity during physical recycling.
Collapse
Affiliation(s)
- Rubén García-Sobrino
- Department of Applied Mathematics, Materials Science and Engineering and Electronic Technology, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain; (R.G.-S.)
| | - Alejandro Cortés
- Department of Applied Mathematics, Materials Science and Engineering and Electronic Technology, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain; (R.G.-S.)
| | - Rocío Calderón-Villajos
- Department of Applied Mathematics, Materials Science and Engineering and Electronic Technology, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain; (R.G.-S.)
| | - Jorge G. Díaz
- School of Mechanical Engineering, Industrial University of Santander, Bucaramanga 680002, Colombia;
| | - Marta Muñoz
- Department of Applied Mathematics, Materials Science and Engineering and Electronic Technology, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain; (R.G.-S.)
| |
Collapse
|
17
|
Kassab A, Al Nabhani D, Mohanty P, Pannier C, Ayoub GY. Advancing Plastic Recycling: Challenges and Opportunities in the Integration of 3D Printing and Distributed Recycling for a Circular Economy. Polymers (Basel) 2023; 15:3881. [PMID: 37835930 PMCID: PMC10575100 DOI: 10.3390/polym15193881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/12/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
The concept of the circular economy has emerged as a promising solution to address the mounting concerns surrounding plastic waste and the urgent need for sustainable resource management. While conventional centralized recycling remains a common practice for plastic waste, centralized facilities may prove inadequate in handling the ever-increasing volumes of plastic waste generated globally. Consequently, exploring alternative recycling methods, such as distributed recycling by additive manufacturing, becomes paramount. This innovative approach encompasses actively involving communities in recycling practices and promotes a circular economy. This comprehensive review paper aims to explore the critical aspects necessary to realize the potential of distributed recycling by additive manufacturing. In this paper, our focus lies on proposing schemes that leverage existing literature to harness the potential of distributed recycling by additive manufacturing as an effective approach to plastic waste management. We explore the intricacies of the recycling process, optimize 3D printing parameters, address potential challenges, and evaluate the mechanical properties of recycled materials. Our investigation draws heavily from the literature of the last five years, as we conduct a thorough critical assessment of DRAM implementation and its influence on the properties of 3D printing structures. Through comprehensive analysis, we reveal the potential of recycled materials in delivering functional components, with insights into their performance, strengths, and weaknesses. This review serves as a comprehensive guide for those interested in embracing distributed recycling by additive manufacturing as a transformative approach to plastic recycling. By fostering community engagement, optimizing 3D printing processes, and incorporating suitable additives, it is possible to collectively contribute to a more sustainable future while combatting the plastic waste crisis. As progress is made, it becomes essential to further delve into the complexities of material behavior, recycling techniques, and the long-term durability of recycled 3D printed components. By addressing these challenges head-on, it is feasible to refine and advance distributed recycling by additive manufacturing as a viable pathway to minimize plastic waste, fostering a circular economy and cultivating a cleaner planet for generations to come.
Collapse
Affiliation(s)
- Ali Kassab
- Department of Industrial and Manufacturing Systems, University of Michigan-Dearborn, Dearborn, MI 48128, USA;
| | - Dawood Al Nabhani
- Department of Mechanical Engineering, University of Michigan-Dearborn, Dearborn, MI 48128, USA; (D.A.N.); (C.P.)
| | - Pravansu Mohanty
- Department of Mechanical Engineering, University of Michigan-Dearborn, Dearborn, MI 48128, USA; (D.A.N.); (C.P.)
| | - Christopher Pannier
- Department of Mechanical Engineering, University of Michigan-Dearborn, Dearborn, MI 48128, USA; (D.A.N.); (C.P.)
| | - Georges Y. Ayoub
- Department of Industrial and Manufacturing Systems, University of Michigan-Dearborn, Dearborn, MI 48128, USA;
| |
Collapse
|
18
|
Hidalgo-Carvajal D, Muñoz ÁH, Garrido-González JJ, Carrasco-Gallego R, Alcázar Montero V. Recycled PLA for 3D Printing: A Comparison of Recycled PLA Filaments from Waste of Different Origins after Repeated Cycles of Extrusion. Polymers (Basel) 2023; 15:3651. [PMID: 37688276 PMCID: PMC10490016 DOI: 10.3390/polym15173651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/10/2023] Open
Abstract
The objective of this work is to evaluate the reprocessing of PLA 3D printing waste from different origins, into filaments and films, and without the addition of any additive. Two types of waste were considered: a blend of different printing wastes (masks, visors, other components) of personal protective equipment coming from an association of Spanish coronamakers, and PLA waste from a single known commercial source. Both types of materials were subjected to repeated extrusion cycles and processed into films by compression molding. Samples were characterized after each cycle and their mechanical and viscosity properties evaluated. Diffusion-ordered NMR spectroscopy (DOSY) experiments were also carried out to estimate molecular weights. The results show a better performance for the PLA waste from the known origin, capable of withstanding up to three re-extrusion cycles per two for the waste blending, without significant degradation. Additionally, a model to address collection and mechanical recycling cycles under two different scenarios (full traceability and not full traceability) was proposed.
Collapse
Affiliation(s)
- David Hidalgo-Carvajal
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain (R.C.-G.)
| | - Álvaro Hortal Muñoz
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain (R.C.-G.)
- Dirección de Compras Industrial y Cliente, Repsol, 28006 Madrid, Spain
| | | | - Ruth Carrasco-Gallego
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain (R.C.-G.)
| | - Victoria Alcázar Montero
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain (R.C.-G.)
- Grupo de Investigación Polímeros, Caracterización y Aplicaciones (POLCA), 28006 Madrid, Spain
| |
Collapse
|
19
|
Anwajler B, Zdybel E, Tomaszewska-Ciosk E. Innovative Polymer Composites with Natural Fillers Produced by Additive Manufacturing (3D Printing)-A Literature Review. Polymers (Basel) 2023; 15:3534. [PMID: 37688160 PMCID: PMC10489793 DOI: 10.3390/polym15173534] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/18/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
In recent years, plastics recycling has become one of the leading environmental and waste management issues. Along with the main advantage of plastics, which is undoubtedly their long life, the problem of managing their waste has arisen. Recycling is recognised as the preferred option for waste management, with the aim of reusing them to create new products using 3D printing. Additive manufacturing (AM) is an emerging and evolving rapid tooling technology. With 3D printing, it is possible to achieve lightweight structures with high dimensional accuracy and reduce manufacturing costs for non-standard geometries. Currently, 3D printing research is moving towards the production of materials not only of pure polymers but also their composites. Bioplastics, especially those that are biodegradable and compostable, have emerged as an alternative for human development. This article provides a brief overview of the possibilities of using thermoplastic waste materials through the application of 3D printing, creating innovative materials from recycled and naturally derived materials, i.e., biomass (natural reinforcing fibres) in 3D printing. The materials produced from them are ecological, widely available and cost-effective. Research activities related to the production of bio-based materials have gradually increased over the last two decades, with the aim of reducing environmental problems. This article summarises the efforts made by researchers to discover new innovative materials for 3D printing.
Collapse
Affiliation(s)
- Beata Anwajler
- Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, 27 Wybrzeze Wyspianskiego Street, 50-370 Wroclaw, Poland
| | - Ewa Zdybel
- Department of Food Storage and Technology, Wroclaw University of Environmental and Life Sciences, 25 Norwida Street, 50-375 Wroclaw, Poland; (E.Z.); (E.T.-C.)
| | - Ewa Tomaszewska-Ciosk
- Department of Food Storage and Technology, Wroclaw University of Environmental and Life Sciences, 25 Norwida Street, 50-375 Wroclaw, Poland; (E.Z.); (E.T.-C.)
| |
Collapse
|
20
|
Oleksy M, Dynarowicz K, Aebisher D. Rapid Prototyping Technologies: 3D Printing Applied in Medicine. Pharmaceutics 2023; 15:2169. [PMID: 37631383 PMCID: PMC10458921 DOI: 10.3390/pharmaceutics15082169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Three-dimensional printing technology has been used for more than three decades in many industries, including the automotive and aerospace industries. So far, the use of this technology in medicine has been limited only to 3D printing of anatomical models for educational and training purposes, which is due to the insufficient functional properties of the materials used in the process. Only recent advances in the development of innovative materials have resulted in the flourishing of the use of 3D printing in medicine and pharmacy. Currently, additive manufacturing technology is widely used in clinical fields. Rapid development can be observed in the design of implants and prostheses, the creation of biomedical models tailored to the needs of the patient and the bioprinting of tissues and living scaffolds for regenerative medicine. The purpose of this review is to characterize the most popular 3D printing techniques.
Collapse
Affiliation(s)
- Małgorzata Oleksy
- Students English Division Science Club, Medical College of the University of Rzeszów, University of Rzeszów, 35-959 Rzeszów, Poland;
| | - Klaudia Dynarowicz
- Center for Innovative Research in Medical and Natural Sciences, Medical College of the University of Rzeszów, University of Rzeszów, 35-310 Rzeszów, Poland;
| | - David Aebisher
- Department of Photomedicine and Physical Chemistry, Medical College of the University of Rzeszów, University of Rzeszów, 35-959 Rzeszów, Poland
| |
Collapse
|
21
|
Rahman AM, Rahman TT, Pei Z, Ufodike CO, Lee J, Elwany A. Additive Manufacturing Using Agriculturally Derived Biowastes: A Systematic Literature Review. Bioengineering (Basel) 2023; 10:845. [PMID: 37508872 PMCID: PMC10376353 DOI: 10.3390/bioengineering10070845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/09/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Agriculturally derived biowastes can be transformed into a diverse range of materials, including powders, fibers, and filaments, which can be used in additive manufacturing methods. This review study reports a study that analyzes the existing literature on the development of novel materials from agriculturally derived biowastes for additive manufacturing methods. A review was conducted of 57 selected publications since 2016 covering various agriculturally derived biowastes, different additive manufacturing methods, and potential large-scale applications of additive manufacturing using these materials. Wood, fish, and algal cultivation wastes were also included in the broader category of agriculturally derived biowastes. Further research and development are required to optimize the use of agriculturally derived biowastes for additive manufacturing, particularly with regard to material innovation, improving print quality and mechanical properties, as well as exploring large-scale industrial applications.
Collapse
Affiliation(s)
- Al Mazedur Rahman
- Department of Industrial & Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Taieba Tuba Rahman
- Department of Industrial & Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Zhijian Pei
- Department of Industrial & Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Chukwuzubelu Okenwa Ufodike
- Department of Engineering Technology and Industrial Distribution, Texas A&M University, College Station, TX 77843, USA
- J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Jaesung Lee
- Department of Industrial & Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Alaa Elwany
- Department of Industrial & Systems Engineering, Texas A&M University, College Station, TX 77843, USA
| |
Collapse
|
22
|
Crapnell R, Sigley E, Williams RJ, Brine T, Garcia-Miranda Ferrari A, Kalinke C, Janegitz BC, Bonacin JA, Banks CE. Circular Economy Electrochemistry: Recycling Old Mixed Material Additively Manufactured Sensors into New Electroanalytical Sensing Platforms. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:9183-9193. [PMID: 37351461 PMCID: PMC10284352 DOI: 10.1021/acssuschemeng.3c02052] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/24/2023] [Indexed: 06/24/2023]
Abstract
Recycling used mixed material additively manufactured electroanalytical sensors into new 3D-printing filaments (both conductive and non-conductive) for the production of new sensors is reported herein. Additively manufactured (3D-printed) sensing platforms were transformed into a non-conductive filament for fused filament fabrication through four different methodologies (granulation, ball-milling, solvent mixing, and thermal mixing) with thermal mixing producing the best quality filament, as evidenced by the improved dispersion of fillers throughout the composite. Utilizing this thermal mixing methodology, and without supplementation with the virgin polymer, the filament was able to be cycled twice before failure. This was then used to process old sensors into an electrically conductive filament through the addition of carbon black into the thermal mixing process. Both recycled filaments (conductive and non-conductive) were utilized to produce a new electroanalytical sensing platform, which was tested for the cell's original application of acetaminophen determination. The fully recycled cell matched the electrochemical and electroanalytical performance of the original sensing platform, achieving a sensitivity of 22.4 ± 0.2 μA μM-1, a limit of detection of 3.2 ± 0.8 μM, and a recovery value of 95 ± 5% when tested using a real pharmaceutical sample. This study represents a paradigm shift in how sustainability and recycling can be utilized within additively manufactured electrochemistry toward promoting circular economy electrochemistry.
Collapse
Affiliation(s)
- Robert
D. Crapnell
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Chester Street, Manchester M1 5GD, U.K.
| | - Evelyn Sigley
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Chester Street, Manchester M1 5GD, U.K.
| | - Rhys J. Williams
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Chester Street, Manchester M1 5GD, U.K.
| | - Tom Brine
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Chester Street, Manchester M1 5GD, U.K.
| | | | - Cristiane Kalinke
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Chester Street, Manchester M1 5GD, U.K.
- Institute
of Chemistry, University of Campinas (Unicamp), 13083-859 São
Paulo, Brazil
| | - Bruno C. Janegitz
- Department
of Nature Sciences, Mathematics, and Education, Federal University of São Carlos (UFSCar), 13600-970 Araras, São Paulo, Brazil
| | - Juliano A. Bonacin
- Institute
of Chemistry, University of Campinas (Unicamp), 13083-859 São
Paulo, Brazil
| | - Craig E. Banks
- Faculty
of Science and Engineering, Manchester Metropolitan
University, Chester Street, Manchester M1 5GD, U.K.
| |
Collapse
|
23
|
Hanitio EW, Lutfhyansyah NR, Efendi BM, Mardiyati Y, Steven S. From Electronic Waste to 3D-Printed Product, How Multiple Recycling Affects High-Impact Polystyrene (HIPS) Filament Performances. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093412. [PMID: 37176294 PMCID: PMC10180321 DOI: 10.3390/ma16093412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/07/2023] [Accepted: 04/15/2023] [Indexed: 05/15/2023]
Abstract
The rapid growth of the electronics industry is producing excessive electronic waste. One of the common types of materials in electronic waste is high-impact polystyrene (HIPS). In this study, HIPS from electronic waste was recycled through an extrusion process and used as a 3D print filament. The effects of recycling on printability, physical properties, and mechanical properties in horizontal and vertical directions were examined. It was found that until the fourth-cycle, mechanical properties such as horizontal tensile strength, horizontal flexural strength, vertical flexural strength, and vertical impact strength were comparable with virgin commercial filament. In addition, the vertical flexural modulus in the fourth cycle increased by 77.28%. However, the density of recycled HIPs' first to the fourth cycle slightly decreased by 10.6%, and the melt flow rate increased by 20.3%. It was also observed that until the third cycle, the effect of the reprocessing steps was insignificant on the defect of the 3D-printed product. In general, the experiments show various results, mainly in mechanical properties. Nevertheless, recycled HIPS filaments are comparable to or better than commercial ones in some cases. As a result, recycled HIPS filaments hold the potential to be considered as an alternative to other types of 3D print filaments.
Collapse
Affiliation(s)
- Edbert Wing Hanitio
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
| | - Novan Rifky Lutfhyansyah
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
| | - Balqis Mentari Efendi
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
| | - Yati Mardiyati
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
| | - Steven Steven
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
| |
Collapse
|
24
|
Nagata K, Inaba K, Kimoto K, Kawana H. Accuracy of Dental Models Fabricated Using Recycled Poly-Lactic Acid. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2620. [PMID: 37048914 PMCID: PMC10096089 DOI: 10.3390/ma16072620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Based on the hypothesis that the fabrication of dental models using fused deposition modeling and poly-lactic acid (PLA), followed by recycling and reusing, would reduce industrial waste, we aimed to compare the accuracies of virgin and recycled PLA models. The PLA models were recycled using a crusher and a filament-manufacturing machine. Virgin PLA was labeled R, and the first, second, and third recycles were labeled R1, R2, and R3, respectively. To determine the accuracies of the virgin and reused PLA models, identical provisional crowns were fitted, and marginal fits were obtained using micro-computed tomography. A marginal fit of 120 µm was deemed acceptable based on previous literature. The mesial, distal, buccal, and palatal centers were set at M, D, B, and P, respectively. The mean value of each measurement point was considered as the result. When comparing the accuracies of R and R1, R2, and R3, significant differences were noted between R and R3 at B, R and R2, R3 at P, and R and R3 at D (p < 0.05). No significant difference was observed at M. This study demonstrates that PLA can be recycled only once owing to accuracy limitations.
Collapse
Affiliation(s)
- Koudai Nagata
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Japan
| | - Keitaro Inaba
- Department of Oral Microbiology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Japan
| | - Katsuhiko Kimoto
- Department of Fixed Prosthodontics, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Japan
| | - Hiromasa Kawana
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Japan
| |
Collapse
|
25
|
Cakir Yigit N, Karagoz I. A review of recent advances in bio-based polymer composite filaments for 3D printing. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2023.2190799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Affiliation(s)
- Nese Cakir Yigit
- Polymer Materials Engineering Department, Yalova University, Yalova, Türkiye
| | - Idris Karagoz
- Polymer Materials Engineering Department, Yalova University, Yalova, Türkiye
| |
Collapse
|
26
|
Silva-Neto HA, Duarte-Junior GF, Rocha DS, Bedioui F, Varenne A, Coltro WKT. Recycling 3D Printed Residues for the Development of Disposable Paper-Based Electrochemical Sensors. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36884339 DOI: 10.1021/acsami.3c00370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Here, we propose a recyclable approach using acrylonitrile-butadiene-styrene (ABS) residues from additive manufacturing in combination with low-cost and accessible graphite flakes as a novel and potential mixture for creating a conductive paste. The graphite particles were successfully incorporated in the recycled thermoplastic composite when solubilized with acetone and the mixture demonstrated greater adherence to different substrates, among which cellulose-based material made possible the construction of a paper-based electrochemical sensor (PES). The morphological, structural, and electrochemical characterizations of the recycled electrode material were demonstrated to be similar to those of the traditional carbon-based surfaces. Faradaic responses based on redox probe activity ([Fe(CN)6]3-/4-) exhibited well-defined peak currents and diffusional mass transfer as a quasi-reversible system (96 ± 5 mV) with a fast heterogeneous rate constant value of 2 × 10-3 cm s-1. To improve the electrode electrochemical properties, both the PES and the classical 3D-printed electrode surfaces were modified with a combination of multiwalled carbon nanotubes (MWCNTs), graphene oxide (GO), and copper. Both electrode surfaces demonstrated the suitable oxidation of nitrite at 0.6 and 0.5 V vs Ag, respectively. The calculated analytical sensitivities for PES and 3D-printed electrodes were 0.005 and 0.002 μA/(μmol L-1), respectively. The proposed PES was applied for the indirect amperometric analysis of S-nitroso-cysteine (CysNO) in serum samples via nitrite quantitation, demonstrating a limit of detection of 4.1 μmol L-1, with statistically similar values when compared to quantitative analysis of the same samples by spectrophotometry (paired t test, 95% confidence limit). The evaluated electroanalytical approach exhibited linear behavior for nitrite in the concentration range between 10 and 125 μmol L-1, which is suitable for realizing clinical diagnosis involving Parkinson's disease, for example. This proof of concept shows the great promise of this recyclable strategy combining ABS residues and conductive particles in the context of green chemical protocols for constructing disposable sensors.
Collapse
Affiliation(s)
- Habdias A Silva-Neto
- Instituto de Química, Universidade Federal de Goiás, 74690-900, Goiânia, GO Brazil
| | | | - Danielly S Rocha
- Instituto de Química, Universidade Federal de Goiás, 74690-900, Goiânia, GO Brazil
| | - Fethi Bedioui
- Institute of Chemistry for Life and Health Sciences i-CLeHS, Chimie ParisTech-PSL/CNRS, Paris 8060, France
| | - Anne Varenne
- Institute of Chemistry for Life and Health Sciences i-CLeHS, Chimie ParisTech-PSL/CNRS, Paris 8060, France
| | - Wendell K T Coltro
- Instituto de Química, Universidade Federal de Goiás, 74690-900, Goiânia, GO Brazil
- Instituto Nacional de Ciência e Tecnologia de Bioanalítica, Campinas 13084-971, São Paulo Brazil
| |
Collapse
|
27
|
Tegethoff T, Santa R, Cayón E, Scavarda A. Strategy and additive technologies as the catalyst for outsourcing, process innovation and operational effectiveness. PLoS One 2023; 18:e0282366. [PMID: 36848342 PMCID: PMC9970076 DOI: 10.1371/journal.pone.0282366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 02/13/2023] [Indexed: 03/01/2023] Open
Abstract
PURPOSE There is rising interest in Industry 4.0 as a factor in the competitiveness of the organization. Although many companies are aware of the importance of Industry 4.0, the development of such initiatives in Colombia is slow. Consequently, this research investigates the impact of additive technologies as part of the Industry 4.0 concept on operational effectiveness and, therefore, the competitiveness of the organization and tries to establish the factors that hinder the adequate implementation of such new, innovative technologies. DESIGN/METHODOLOGY/APPROACH Structural equation modeling was used to analyze the antecedents and outcomes of operational effectiveness. To this end, 946 usable questionnaires were collected from managers and personnel from Colombian organizations. FINDINGS Initial findings show that management is aware of Industry 4.0 concepts and implements strategies for such initiatives. Nevertheless, neither process innovation nor additive technologies have a significant impact on operational effectiveness and therefore on the competitiveness of the organization. PRACTICAL IMPLICATIONS The implementation of new innovative technologies requires the closure of the digital gap between urban and rural areas and between large and medium and small enterprises. Similarly, the concept of Industry 4.0 as a new, innovative manufacturing concept requires a transversal implementation to increase the competitiveness of the organization. ORIGINALITY/VALUE The value of this paper lies in discussing the current technological and human capabilities and strategies that Colombian organizations, as an example of a developing nation, should improve to leverage the benefits of Industry 4.0 to remain competitive. The results are probably generalizable to other regions in developing countries throughout the world.
Collapse
Affiliation(s)
- Thomas Tegethoff
- Colegio de Estudios Superiores de Administración–CESA, Bogotá, Colombia
- * E-mail:
| | - Ricardo Santa
- Colegio de Estudios Superiores de Administración–CESA, Bogotá, Colombia
| | - Edgardo Cayón
- Colegio de Estudios Superiores de Administración–CESA, Bogotá, Colombia
| | - Annibal Scavarda
- Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
28
|
Cieślik M, Rodak A, Susik A, Wójcik N, Szociński M, Ryl J, Formela K. Multiple Reprocessing of Conductive PLA 3D-Printing Filament: Rheology, Morphology, Thermal and Electrochemical Properties Assessment. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16031307. [PMID: 36770313 PMCID: PMC9920316 DOI: 10.3390/ma16031307] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/07/2023] [Accepted: 01/30/2023] [Indexed: 05/27/2023]
Abstract
Additive manufacturing technologies are gaining more and more attention, resulting in the development or modification of 3D printing techniques and dedicated materials. On the other hand, economic and ecological aspects force the industry to develop material recycling strategies. In this work, the multiple reprocessing of a commercially available PLA conductive composite with carbon black filler, dedicated to 3D printing, was investigated. The effects of extrusion temperature (190 °C and 200 °C) and reprocessing steps (1-5 steps) on the rheology, morphology, thermal and electrochemical properties of the conductive PLA 3D-printing filament were evaluated. The results showed deterioration of the thermal stability and material strength, as well as the influence of reprocessing on the melting point, which increases after initial melting. The electronic conduction mechanism of the composite depends on the percolation paths and it is also affected by the multiple processing. The reversibility of the [Fe(CN)6]3-/4- redox process diminishes with a higher degradation level of the conductive PLA. Importantly, the material fluidity was too high after the multiple reprocessing, which should be considered and suitably corrected during CB-PLA application as a 3D-printed electrode material.
Collapse
Affiliation(s)
- Mateusz Cieślik
- Advanced Materials Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Agata Rodak
- Advanced Materials Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Agnieszka Susik
- Advanced Materials Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Natalia Wójcik
- Advanced Materials Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Michał Szociński
- Department of Electrochemistry, Corrosion and Materials Engineering, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Jacek Ryl
- Advanced Materials Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Krzysztof Formela
- Advanced Materials Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| |
Collapse
|
29
|
Pillay R, Hansraj R, Rampersad N. Spectacle lens and contact lens recycling in South Africa. AFRICAN VISION AND EYE HEALTH 2023. [DOI: 10.4102/aveh.v82i1.777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
|
30
|
Colombian Sustainability Perspective on Fused Deposition Modeling Technology: Opportunity to Develop Recycled and Biobased 3D Printing Filaments. Polymers (Basel) 2023; 15:polym15030528. [PMID: 36771829 PMCID: PMC9921848 DOI: 10.3390/polym15030528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/05/2023] [Accepted: 01/10/2023] [Indexed: 01/21/2023] Open
Abstract
In the context of the preservation of natural resources, researchers show a growing interest in developing eco-friendly materials based on recycled polymers and natural fiber biocomposites to minimize plastic and agroindustrial waste pollution. The development of new materials must be integrated within the circular economy concepts to guarantee sustainable production. In parallel, fused deposition modeling, an additive manufacturing technology, provides the opportunity to use these new materials in an efficient and sustainable manner. This review presents the context of plastics and agro-industrial fiber pollution, followed by the opportunity to give them added value by applying circular economy concepts and implementing these residues to develop new materials for the manufacture of fused deposition modeling 3D printing technique feedstock. Colombian perspective is highlighted since 3D printing technology is growing there, and Colombian biodiversity represents a high reservoir of materials. Also, recycling in Colombia promotes compliance with the 2030 Agenda and the Sustainable Development Goals.
Collapse
|
31
|
Mishra V, Negi S, Kar S. FDM-based additive manufacturing of recycled thermoplastics and associated composites. JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT 2023; 25:758-784. [PMID: 36686404 PMCID: PMC9838364 DOI: 10.1007/s10163-022-01588-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Hailed since the fourth industrial revolution, three-dimensional (3D) printing or additive manufacturing (AM) has been extensively implemented in various manufacturing sectors. This process is popular for generating regular products and incorporating innovative designs into the components like auxetic structures, such as fabrication of engineering products, customized implants and sophisticated biomedical devices. Over the years, one of the interesting outputs of this emerging technology is the reuse of waste thermoplastic materials to produce competent products through the fused deposition modeling (FDM) technique. The strength of FDM components produced from thermoplastic waste is lower than that of virgin plastic FDM counterparts. So, there is a need to understand the significant changes in the recycled thermoplastic material during subsequent extrusions, which are chain scission, change in viscosity and breaking strength. The use of additives has been a promising solution to improve the performance of recycled material for 3D printing applications. Hence, this study aims to provide an overview of reusing plastic waste through FDM-based 3D printing. This review summarizes the current knowledge about the effect of processing on thermo-mechanical properties of recycled plastic FDM parts and the use of various additives to improve the overall quality. In addition, two case studies from open literature have been demonstrated to explain the use of FDM and associated technology for plastic recycling.
Collapse
Affiliation(s)
- Vishal Mishra
- National Institute of Technology Silchar, Silchar, Assam India
| | - Sushant Negi
- National Institute of Technology Silchar, Silchar, Assam India
| | - Simanchal Kar
- National Institute of Technology Silchar, Silchar, Assam India
| |
Collapse
|
32
|
Nagata K, Muromachi K, Kouzai Y, Inaba K, Inoue E, Fuchigami K, Nihei T, Atsumi M, Kimoto K, Kawana H. Fit accuracy of resin crown on a dental model fabricated using fused deposition modeling 3D printing and a polylactic acid filament. J Prosthodont Res 2023; 67:144-149. [PMID: 35466158 DOI: 10.2186/jpr.jpr_d_21_00325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Purpose We considered the possibility of reducing industrial waste by fabricating and reusing dental models prepared using a fused deposition modeling (FDM) 3D printer and polylactic acid (PLA) filaments. The purpose of this study was to verify the accuracy of models fabricated using FDM and PLA.Methods The same provisional crown was used to check the marginal fit on PLA models prepared using an intraoral scanner (IOS) and FDM, plaster models made with silicone impression material and plaster, and resin models prepared using an IOS and stereolithography apparatus (SLA) 3D printer. The marginal fit was measured using micro-computed tomography at four points on the tooth: the buccal center (B), palatal center (P), mesial center (M), and distal center (D) points.Results At point B, the marginal gaps were 118 ± 21.7, 62 ± 16.4, and 50 ± 26.5 μm for the PLA, resin, and plaster models, respectively, with a significant difference between the PLA model and the other two. However, the marginal gap at all other measurement points was not significantly different between the models (P > 0.05).Conclusions We compared the accuracy of the models fabricated using the FDM, SLA, and conventional methods. The combination of FDM and PLA filaments showed no significant differences from the other models, except at point B, indicating its usefulness. Therefore, FDM and PLA may become necessary materials for dental treatment in the future.
Collapse
Affiliation(s)
- Koudai Nagata
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, Yokosuka, Japan
| | - Koichiro Muromachi
- Department of Pulp Biology and Endodontics, Kanagawa Dental University, Yokosuka, Japan
| | - Yusuke Kouzai
- Department of Education Planning, Kanagawa Dental University, Yokosuka, Japan
| | - Keitaro Inaba
- Department of Oral Microbiology, Kanagawa Dental University, Yokosuka, Japan
| | - Erika Inoue
- Division of the Dental practice support, Kanagawa Dental University, Yokosuka, Japan
| | - Kei Fuchigami
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, Yokosuka, Japan
| | - Tomotaro Nihei
- Department of Clinical Biomaterials, Kanagawa Dental University, Yokosuka, Japan
| | - Mihoko Atsumi
- Department of Fixed Prosthodontics, Kanagawa Dental University, Yokosuka, Japan
| | - Katsuhiko Kimoto
- Department of Fixed Prosthodontics, Kanagawa Dental University, Yokosuka, Japan
| | - Hiromasa Kawana
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, Yokosuka, Japan
| |
Collapse
|
33
|
Thermomechanical response of thermoplastic polyurethane used in MEX additive manufacturing over repetitive mechanical recycling courses. Polym Degrad Stab 2023. [DOI: 10.1016/j.polymdegradstab.2022.110232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
34
|
Koczoń P, Bartyzel B, Iuliano A, Klensporf-Pawlik D, Kowalska D, Majewska E, Tarnowska K, Zieniuk B, Gruczyńska-Sękowska E. Chemical Structures, Properties, and Applications of Selected Crude Oil-Based and Bio-Based Polymers. Polymers (Basel) 2022; 14:polym14245551. [PMID: 36559918 PMCID: PMC9783367 DOI: 10.3390/polym14245551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/07/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The growing perspective of running out of crude oil followed by increasing prices for all crude oil-based materials, e.g., crude oil-based polymers, which have a huge number of practical applications but are usually neither biodegradable nor environmentally friendly, has resulted in searching for their substitutes-namely, bio-based polymers. Currently, both these types of polymers are used in practice worldwide. Owing to the advantages and disadvantages occurring among plastics with different origin, in this current review data on selected popular crude oil-based and bio-based polymers has been collected in order to compare their practical applications resulting from their composition, chemical structure, and related physical and chemical properties. The main goal is to compare polymers in pairs, which have the same or similar practical applications, regardless of different origin and composition. It has been proven that many crude oil-based polymers can be effectively replaced by bio-based polymers without significant loss of properties that ensure practical applications. Additionally, biopolymers have higher potential than crude oil-based polymers in many modern applications. It is concluded that the future of polymers will belong to bio-based rather than crude oil-based polymers.
Collapse
Affiliation(s)
- Piotr Koczoń
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Bartłomiej Bartyzel
- Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Anna Iuliano
- Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Dorota Klensporf-Pawlik
- Department of Food Quality and Safety, Poznan University of Economics and Business, 61-875 Poznan, Poland
| | - Dorota Kowalska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Ewa Majewska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Katarzyna Tarnowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Bartłomiej Zieniuk
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Eliza Gruczyńska-Sękowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
- Correspondence:
| |
Collapse
|
35
|
Fico D, Rizzo D, De Carolis V, Montagna F, Esposito Corcione C. Sustainable Polymer Composites Manufacturing through 3D Printing Technologies by Using Recycled Polymer and Filler. Polymers (Basel) 2022; 14:polym14183756. [PMID: 36145901 PMCID: PMC9504255 DOI: 10.3390/polym14183756] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/01/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
In the last years, the excessive use of plastic and other synthetic materials, that are generally difficult to dispose of, has caused growing ecological worries. These are contributing to redirecting the world’s attention to sustainable materials and a circular economy (CE) approach using recycling routes. In this work, bio-filaments for the Fused Filament Fabrication (FFF) 3D printing technique were produced from recycled polylactic acid (PLA) and artisanal ceramic waste by an extrusion process and fully characterized from a physical, thermal, and mechanical point of view. The data showed different morphological, thermal, rheological, and mechanical properties of the two produced filaments. Furthermore, the 3D objects produced from the 100% recycled PLA filament showed lower mechanical performance. However, the results have demonstrated that all the produced filaments can be used in a low-cost FFF commercial printer that has been modified with simple hand-made operations in order to produce 3D-printed models. The main objective of this work is to propose an example of easy and low-cost application of 3D printing that involves operations such as the reprocessing and the recyclability of materials, that are also not perfectly mechanically performing but can still provide environmental and economic benefits.
Collapse
Affiliation(s)
- Daniela Fico
- Department of Engineering for Innovation, University of Salento, Edificio P, Campus Ecotekne, s.p. 6 Lecce-Monteroni, 73100 Lecce, Italy
- Correspondence:
| | - Daniela Rizzo
- Department of Cultural Heritage, University of Salento, Via D. Birago 64, 73100 Lecce, Italy
| | - Valentina De Carolis
- Department of Engineering for Innovation, University of Salento, Edificio P, Campus Ecotekne, s.p. 6 Lecce-Monteroni, 73100 Lecce, Italy
| | - Francesco Montagna
- Department of Engineering for Innovation, University of Salento, Edificio P, Campus Ecotekne, s.p. 6 Lecce-Monteroni, 73100 Lecce, Italy
| | - Carola Esposito Corcione
- Department of Engineering for Innovation, University of Salento, Edificio P, Campus Ecotekne, s.p. 6 Lecce-Monteroni, 73100 Lecce, Italy
| |
Collapse
|
36
|
Madhu NR, Erfani H, Jadoun S, Amir M, Thiagarajan Y, Chauhan NPS. Fused deposition modelling approach using 3D printing and recycled industrial materials for a sustainable environment: a review. THE INTERNATIONAL JOURNAL, ADVANCED MANUFACTURING TECHNOLOGY 2022; 122:2125-2138. [PMID: 36091410 PMCID: PMC9443620 DOI: 10.1007/s00170-022-10048-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/25/2022] [Indexed: 06/12/2023]
Abstract
According to research findings of many peer-reviewed studies, up to 90% of household items may be made of plastic. But nowadays, just a small portion of plastic waste is recycled. Plastic pyrolysis and polymer breakdown are environmentally hazardous. Processing is, therefore, necessary for recycling. Plastics are constantly being manufactured and require minimal processing, necessitating innovation. Plastic recycling is becoming a major issue for environmentalists and waste management professionals. Fused deposition modelling, or FDM, is one of the most popular types of additive manufacturing. It uses the melt extrusion process to deposit filaments of thermal polymers in a predetermined pattern. Using a computer-generated design, 3D printing, sometimes referred to as additive manufacturing, is a technique for building three-dimensional objects layer by layer. A 3D item is produced by the additive method of 3D printing, which involves building up layers of material. To make a three-dimensional object, FDM printers eject a thermoplastic filament that has been heated to its melting point layer by layer. 3D printing is a rapidly expanding industry and the market in this field has grown up to 23% by 2021. Several experiments on new 3D printing materials have been carried out to reduce pollution and the supply of plastic. Various additives have been investigated to increase recycled polymers' molecular weight and mechanical properties. The most frequent type of fibre found in that is thermoplastic fibre. In this instance, waste ABS (acrylonitrile butadiene styrene) plastic from industrial FDM printers was gathered and examined in a bustling open shop. In this review, we discussed the use of recyclable polymers in 3D printing for waste material management.
Collapse
Affiliation(s)
- Nithar Ranjan Madhu
- Department of Zoology, Acharya Prafulla Chandra College, New Barrackpore, West Bengal India
| | - Hadi Erfani
- Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Sapana Jadoun
- Laboratorio de Especiación Y Trazas Elementales, Departamento de Química Analítica E Inorgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
| | - Mohammad Amir
- Department of Electrical Engineering, Jamia Millia Islamia Central University, Delhi, India
| | - Y. Thiagarajan
- Department of Electrical and Electronics Engineering, Christ College of Engineering and Technology, Puducherry, India
| | | |
Collapse
|
37
|
Hassoun A, Cropotova J, Trif M, Rusu AV, Bobiş O, Nayik GA, Jagdale YD, Saeed F, Afzaal M, Mostashari P, Khaneghah AM, Regenstein JM. Consumer acceptance of new food trends resulting from the fourth industrial revolution technologies: A narrative review of literature and future perspectives. Front Nutr 2022; 9:972154. [PMID: 36034919 PMCID: PMC9399420 DOI: 10.3389/fnut.2022.972154] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 07/15/2022] [Indexed: 12/11/2022] Open
Abstract
The growing consumer awareness of climate change and the resulting food sustainability issues have led to an increasing adoption of several emerging food trends. Some of these trends have been strengthened by the emergence of the fourth industrial revolution (or Industry 4.0), and its innovations and technologies that have fundamentally reshaped and transformed current strategies and prospects for food production and consumption patterns. In this review a general overview of the industrial revolutions through a food perspective will be provided. Then, the current knowledge base regarding consumer acceptance of eight traditional animal-proteins alternatives (e.g., plant-based foods and insects) and more recent trends (e.g., cell-cultured meat and 3D-printed foods) will be updated. A special focus will be given to the impact of digital technologies and other food Industry 4.0 innovations on the shift toward greener, healthier, and more sustainable diets. Emerging food trends have promising potential to promote nutritious and sustainable alternatives to animal-based products. This literature narrative review showed that plant-based foods are the largest portion of alternative proteins but intensive research is being done with other sources (notably the insects and cell-cultured animal products). Recent technological advances are likely to have significant roles in enhancing sensory and nutritional properties, improving consumer perception of these emerging foods. Thus, consumer acceptance and consumption of new foods are predicted to continue growing, although more effort should be made to make these food products more convenient, nutritious, and affordable, and to market them to consumers positively emphasizing their safety and benefits.
Collapse
Affiliation(s)
- Abdo Hassoun
- Sustainable AgriFoodtech Innovation and Research (SAFIR), Arras, France
- Syrian Academic Expertise (SAE), Gaziantep, Turkey
| | - Janna Cropotova
- Department of Biological Sciences Ålesund, Norwegian University of Science and Technology, Ålesund, Norway
| | - Monica Trif
- Department of Food Research, Centre for Innovative Process Engineering (CENTIV) GmbH, Syke, Germany
| | - Alexandru Vasile Rusu
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Cluj-Napoca, Romania
- Genetics and Genetic Engineering, Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, Cluj-Napoca, Romania
| | - Otilia Bobiş
- Animal Science and Biotechnology Faculty, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Cluj-Napoca, Romania
| | - Gulzar Ahmad Nayik
- Department of Food Science and Technology, Government Degree College, Shopian, India
| | - Yash D. Jagdale
- MIT School of Food Technology, MIT ADT University, Pune, India
| | - Farhan Saeed
- Department of Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Department of Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Parisa Mostashari
- Department of Food Science and Technology, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amin Mousavi Khaneghah
- Department of Fruit and Vegetable Product Technology, Prof. Wacław Dabrowski Institute of Agricultural and Food Biotechnology – State Research Institute, Warsaw, Poland
| | - Joe M. Regenstein
- Department of Food Science, Cornell University, Ithaca, NY, United States
| |
Collapse
|
38
|
Hassoun A, Bekhit AED, Jambrak AR, Regenstein JM, Chemat F, Morton JD, Gudjónsdóttir M, Carpena M, Prieto MA, Varela P, Arshad RN, Aadil RM, Bhat Z, Ueland Ø. The fourth industrial revolution in the food industry-part II: Emerging food trends. Crit Rev Food Sci Nutr 2022; 64:407-437. [PMID: 35930319 DOI: 10.1080/10408398.2022.2106472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The food industry has recently been under unprecedented pressure due to major global challenges, such as climate change, exponential increase in world population and urbanization, and the worldwide spread of new diseases and pandemics, such as the COVID-19. The fourth industrial revolution (Industry 4.0) has been gaining momentum since 2015 and has revolutionized the way in which food is produced, transported, stored, perceived, and consumed worldwide, leading to the emergence of new food trends. After reviewing Industry 4.0 technologies (e.g. artificial intelligence, smart sensors, robotics, blockchain, and the Internet of Things) in Part I of this work (Hassoun, Aït-Kaddour, et al. 2022. The fourth industrial revolution in the food industry-Part I: Industry 4.0 technologies. Critical Reviews in Food Science and Nutrition, 1-17.), this complimentary review will focus on emerging food trends (such as fortified and functional foods, additive manufacturing technologies, cultured meat, precision fermentation, and personalized food) and their connection with Industry 4.0 innovations. Implementation of new food trends has been associated with recent advances in Industry 4.0 technologies, enabling a range of new possibilities. The results show several positive food trends that reflect increased awareness of food chain actors of the food-related health and environmental impacts of food systems. Emergence of other food trends and higher consumer interest and engagement in the transition toward sustainable food development and innovative green strategies are expected in the future.
Collapse
Affiliation(s)
- Abdo Hassoun
- Sustainable AgriFoodtech Innovation & Research (SAFIR), Arras, France
- Syrian AcademicExpertise (SAE), Gaziantep, Turkey
| | | | - Anet Režek Jambrak
- Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
| | - Joe M Regenstein
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Farid Chemat
- Green Extraction Team, INRAE, Avignon University, Avignon, France
| | - James D Morton
- Department of Wine Food and Molecular Biosciences, Lincoln University, Lincoln, New Zealand
| | - María Gudjónsdóttir
- Faculty of Food Science and Nutrition, School of Health Sciences, University of Iceland, Reykjavík, Iceland
| | - María Carpena
- Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
| | - Miguel A Prieto
- Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
| | - Paula Varela
- Fisheries and Aquaculture Research, Nofima - Norwegian Institute of Food, Ås, Norway
| | - Rai Naveed Arshad
- Institute of High Voltage & High Current, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan
| | - Zuhaib Bhat
- Division of Livestock Products Technology, SKUAST-J, Jammu, India
| | - Øydis Ueland
- Fisheries and Aquaculture Research, Nofima - Norwegian Institute of Food, Ås, Norway
| |
Collapse
|
39
|
Singh R, Prakash S, Kumar V, Pabla BS. 3D Printed Flame Retardant, ABS-C4H8N6O Composite as Energy Storage Device. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07106-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
40
|
Barczewski BF, Junqueira LDA, Raposo FJ, Brandão MAF, Raposo NRB. Aplicações da manufatura aditiva em oftalmologia. REVISTA BRASILEIRA DE OFTALMOLOGIA 2022. [DOI: 10.37039/1982.8551.20220052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
41
|
Bow JK, Gallup N, Sadat SA, Pearce JM. Open source surgical fracture table for digitally distributed manufacturing. PLoS One 2022; 17:e0270328. [PMID: 35839177 PMCID: PMC9286293 DOI: 10.1371/journal.pone.0270328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
Roughly a third of the surgical procedures the World Bank is prioritizing as essential and cost-effective are orthopedic procedures. Yet in much of the developing world, prohibitive costs are a substantial barrier to universal access. One area where this is clear is surgical fracture tables, which generally cost >US$200,000 new. With the advent of 3-D printing, a new way to reduce medical equipment costs is to use open source hardware licensed designs to fabricate digitally-distributed manufactured medical hardware. That approach is applied here to make surgical tables more accessible. This study describes the design and manufacture of an open source surgical fracture table that uses materials that are widely available worldwide with specialty components being 3-D printed. The bill of materials and assembly instructions are detailed and the fracture table is validated to perform mechanically to specifications. Using an open source desktop RepRap-class 3-D printer, the components can be printed in a little over a week of continuous printing. Including the 3-D printed parts, the open source fracture table can be constructed for under US$3,000 in material costs, representing a 98.5% savings for commercial systems, radically increasing accessibility. The open source table can be adjusted 90–116 cm in height, tilted from +/-15 degrees, the leg height ranges from 31 to 117 cm, the arm supports and foot holder both have a 180-degree range, the foot position has a 54 cm range, and the legs can be adjusted from 55 to 120 degrees. It is mechanically adjusted so does not require electricity, however, surgical staff need to be trained on how to perform needed adjustments during surgery. The open source surgical table has verified performance for mechanical loading over 130 kg, geometric flexibility to allow for wide array of common surgeries, is radiolucent in surgical zones, and is modular and upgradeable.
Collapse
Affiliation(s)
- J. K. Bow
- Department of Materials Science & Engineering, Michigan Technological University, Houghton, MI, United States of America
| | - N. Gallup
- Department of Biomedical Engineering and Mechanical Engineering, Michigan Technological University, Houghton, MI, United States of America
| | - S. A. Sadat
- Department of Electrical & Computer Engineering and Ivey School of Business, Western University, London, ON, Canada
| | - J. M. Pearce
- Department of Materials Science & Engineering, Michigan Technological University, Houghton, MI, United States of America
- Department of Electrical & Computer Engineering and Ivey School of Business, Western University, London, ON, Canada
- * E-mail:
| |
Collapse
|
42
|
Babaremu KO, Okoya SA, Hughes E, Tijani B, Teidi D, Akpan A, Igwe J, Karera S, Oyinlola M, Akinlabi ET. Sustainable plastic waste management in a circular economy. Heliyon 2022; 8:e09984. [PMID: 35874054 PMCID: PMC9304725 DOI: 10.1016/j.heliyon.2022.e09984] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/01/2022] [Accepted: 07/13/2022] [Indexed: 11/28/2022] Open
Abstract
The discovery of plastics as useful materials for human existence, providing comfort and ease has now turned into a menace in the society and a pain in the neck as plastics have also become co-habitat of the human ecosystem. Plastics were made by men, but plastics now live way longer than the men who gave them the privilege of existence. Since these colonies of materials cannot be eradicated, it is very pertinent to discover possible ways of useful diversion through recycling by converting plastic bottle waste into useful raw materials for other sectors of the economy. This paper has stirred the pool of relevant literature to extract some of the innovative efforts that have been deployed into redirecting the potential of plastic waste into useful applications like engineering and building construction, horticulture in agriculture, and the most advanced application is the 3D printing using plastics as filaments. Following the trend of technology, 3D printing is a grey area of plastic recycling, it is quite expensive however, it worth exploring. Plastics are not biodegradable in nature because they can live up to hundreds of years. Incineration of plastics is not environmentally healthy because of the harmful gases emitted during the process. The circular economy has provided the possibilities for recycling and sustainable management of plastic wastes. Waste pet bottles are used for arts, crafts and reinforcement aggregate for building construction. Plastics are also used as filaments for 3D printing of various items.
Collapse
Affiliation(s)
- K O Babaremu
- Mechanical Engineering Department, University of Johannesburg, Johannesburg, South Africa.,Directorate of Pan African University Life and Earth Sciences Institute (PAULESI), Ibadan, Oyo State, Nigeria
| | - S A Okoya
- De Montfort University, Leicester, United Kingdom
| | - E Hughes
- Directorate of Pan African University Life and Earth Sciences Institute (PAULESI), Ibadan, Oyo State, Nigeria
| | | | - D Teidi
- Co-Creation HUB, Lagos, Nigeria
| | - A Akpan
- Co-Creation HUB, Lagos, Nigeria
| | - J Igwe
- Co-Creation HUB, Lagos, Nigeria
| | | | - M Oyinlola
- De Montfort University, Leicester, United Kingdom
| | - E T Akinlabi
- Mechanical Engineering Department, University of Johannesburg, Johannesburg, South Africa.,Directorate of Pan African University Life and Earth Sciences Institute (PAULESI), Ibadan, Oyo State, Nigeria
| |
Collapse
|
43
|
Bembenek M, Kowalski Ł, Kosoń-Schab A. Research on the Influence of Processing Parameters on the Specific Tensile Strength of FDM Additive Manufactured PET-G and PLA Materials. Polymers (Basel) 2022; 14:polym14122446. [PMID: 35746019 PMCID: PMC9230522 DOI: 10.3390/polym14122446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/08/2022] [Accepted: 06/14/2022] [Indexed: 02/06/2023] Open
Abstract
Fused deposition modeling (FDM) is one of the most accessible additive manufacturing (AM) technologies for processing polymeric materials. It allows processing most of thermoplastic polymers, with polyethylene terephthalate glycol-modified (PET-G) and polylactic acid (PLA). AM parts tend to display anisotropic behavior because of layer-by-layer fabrication and various technological parameters that can be set for 3D print, so it is hard to predict and analyze how the manufactured parts would behave under load. This research presents results of classic tensile strength tests performed on 57 PET-G specimens and 57 PLA specimens manufactured with varying technological parameters such as: printing temperature, print orientation, layer height, and infill percentage. Afterward, a comparative analysis is performed, proposing specific tensile strength (STS) as a benchmark to determine how 3D printed parts strength is varying due to beforementioned parameters, eliminating bias induced by varying weight of specimens. The biggest relative increase of UTS and the biggest relative decrease of STS was noted for variable infill percentage (increasing infill—PLA: 37.27% UTS increase and 30.41% STS decrease; PET-G: 24.42% UTS increase and 37.69% STS decrease). The biggest relative increase of STS between examined parameters was observed for both materials as the printing temperature was increased (27.53% for PLA and 12.69% for PET-G). Similar trends in STS changes were observed for both materials. Obtained data shows which FDM AM parameters are the most important to obtain the biggest UTS of manufactured parts, and those do not overlap with parameters needed to obtain optimal strength-to-weight ratio.
Collapse
|
44
|
Feasibility Study on the Fused Filaments of Injection-Molding-Grade Poly(Ethylene Terephthalate) for 3D Printing. Polymers (Basel) 2022; 14:polym14112276. [PMID: 35683948 PMCID: PMC9182887 DOI: 10.3390/polym14112276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 02/01/2023] Open
Abstract
Unlike that of glycol-modified Poly(ethylene terephthalate) (PETG), the crystallinity of PET can be post-adjusted to enhance the mechanical properties of 3D-printed parts such as food-contact tableware and bio-implants. The aforementioned PET material could be 3D printed to produce the desired parts for performance evaluation before mass production by injection molding. In this study, using differential scanning calorimetry (DSC), we examined the pellets, extruded filament, and printed specimen to identify variations in melting and crystalline temperatures, as well as crystallinity. It was also shown by Thermogravimetric Analyzer (TGA) that the addition of talcum powder increased the thermal stability of filament and resulted in an interaction between the fillers and polymer matrix. The crystallinities of the filament and printed specimen were then compared with the yield strengths and Young’s moduli to confirm the effects of the decreased molecular weight of the extruded PET filament. The talcum powder effectively improved the viscosity of the PET melted during the extrusion process for the filament and then enhanced the crystallinity of the PET, thereby achieving a significantly higher Young’s modulus. The printed PET specimen presented an excellent yield strength of 25 MPa and ductile properties with strain-at-break values of 30%, successfully indicating potential applications in food-contact tableware and bio-implants.
Collapse
|
45
|
Pricop B, Sava ȘD, Lohan NM, Bujoreanu LG. DMA Investigation of the Factors Influencing the Glass Transition in 3D Printed Specimens of Shape Memory Recycled PET. Polymers (Basel) 2022; 14:polym14112248. [PMID: 35683921 PMCID: PMC9183118 DOI: 10.3390/polym14112248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 12/04/2022] Open
Abstract
Polyethylene terephthalate (PET) is used worldwide for packing, and for this reason, it is the main material in plastic waste. The paper uses granules of recycled PET (R-PET) as raw material for producing filaments for 3D printing, subsequently used for printing the test specimens in different ways: longitudinally and at angles between 10° and 40° in this direction. Both the filaments and the printed specimens experience thermally driven shape memory effect (SME) since they have been able to recover their straight shape during heating, after being bent to a certain angle, at room temperature (RT). SME could be reproduced three times, in the case of printed specimens, and was investigated by cinematographic analysis. Then, differential scanning calorimetry (DSC) was used, in R-PET granules, filaments and 3D printed specimens, to emphasize the existence of glass transition, which represents the governing mechanism of SME occurrence in thermoplastic polymers, as well as a recrystallization reaction. Subsequently, the paper investigated the 3D printed specimens by dynamic mechanical analysis (DMA) using a dual cantilever specimen holder. Temperature (DMA-TS) and isothermal scans (DMA-Izo) were performed, with the aim to discuss the variations of storage modulus and loss modulus with temperature and time, respectively.
Collapse
Affiliation(s)
- Bogdan Pricop
- Faculty of Materials Science, “Gheorghe Asachi” Technical University of Iași, Blvd. Dimitrie Mangeron 71A, 700050 Iasi, Romania; (B.P.); (N.-M.L.)
| | | | - Nicoleta-Monica Lohan
- Faculty of Materials Science, “Gheorghe Asachi” Technical University of Iași, Blvd. Dimitrie Mangeron 71A, 700050 Iasi, Romania; (B.P.); (N.-M.L.)
| | - Leandru-Gheorghe Bujoreanu
- Faculty of Materials Science, “Gheorghe Asachi” Technical University of Iași, Blvd. Dimitrie Mangeron 71A, 700050 Iasi, Romania; (B.P.); (N.-M.L.)
- Correspondence: ; Tel.: +40-727-486-406
| |
Collapse
|
46
|
COVID-19 Biomedical Plastics Wastes—Challenges and Strategies for Curbing the Environmental Disaster. SUSTAINABILITY 2022. [DOI: 10.3390/su14116466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The rise of the COVID-19 outbreak has made handling plastic waste much more difficult. Our superior, hyper-hygienic way of life has changed our behavioural patterns, such as the use of PPE (Personal Protective Equipment), the increased desire for plastic-packaged food and commodities, and the use of disposable utensils, as a result of the fear of transmission. The constraints and inefficiencies of our current waste management system, in dealing with our growing reliance on plastic, could worsen its mismanagement and leakage into the environment, causing a new environmental crisis. A sustainable, systemic, and hierarchical plastic management plan, which clearly outlines the respective responsibilities as well as the socioeconomic and environmental implications of these actions, is required to tackle the problem of plastic pollution. It will necessitate action strategies tailored to individual types of plastic waste and country demand, as well as increased support from policymakers and the general public. The situation of biomedical plastic wastes during the COVID-19 epidemic is alarming. In addition, treatment of plastic waste, sterilisation, incineration, and alternative technologies for transforming bio-plastic waste into value-added products were discussed, elaborately. Our review would help to promote sustainable technologies to manage plastic waste, which can only be achieved with a change in behaviour among individuals and society, which might help to safeguard against going from one disaster to another in the coming days.
Collapse
|
47
|
Botero-Valencia J, Mejia-Herrera M, Pearce JM. Design and implementation of 3-D printed radiation shields for environmental sensors. HARDWAREX 2022; 11:e00267. [PMID: 35509928 PMCID: PMC9058705 DOI: 10.1016/j.ohx.2022.e00267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The measurement of outdoor environmental and climatic variables is needed for many applications such as precision agriculture, environmental pollution monitoring, and the study of ecosystems. Some sensors deployed for these purposes such as temperature, relative humidity, atmospheric pressure, and carbon dioxide sensors require protection from climate factors to avoid bias. Radiation shields hold and protect sensors to avoid this bias, but commercial systems are limited, often expensive, and difficult to implement in low-cost contexts or large deployments for collaborative sensing. To overcome these challenges, this work presents an open source, easily adapted and customized design of a radiation shield. The device can be fabricated with inexpensive off-the-shelf parts and 3-D printed components and can be adapted to protect and isolate different types of sensors. Two material approaches are tested here: polylactic acid (PLA), the most common 3-D printing filament, and acrylonitrile styrene acrylate (ASA), which is known to offer better resistance against UV radiation, greater hardness, and generally higher resistance to degradation. To validate the designs, the two prototypes were installed on a custom outdoor meteorological system and temperature and humidity measurements were made in several locations for one month and compared against a proprietary system and a system with no shield. The 3-D printed materials were also both tested multiple times for one month for UV stability of their mechanical properties, their optical transmission and deformation under outdoor high-heat conditions. The results showed that ASA is the preferred material for this design and that the open source radiation shield could match the performance of proprietary systems. The open source system can be constructed for about nine US dollars, which enables mass development of flexible weather stations for monitoring needed in smart agriculture.
Collapse
Affiliation(s)
- J.S. Botero-Valencia
- Grupo de Sistemas de Control y Robótica, Instituto Tecnológico Metropolitano, Medellín, Colombia
- Corresponding author.
| | - M. Mejia-Herrera
- Grupo de Sistemas de Control y Robótica, Instituto Tecnológico Metropolitano, Medellín, Colombia
| | - Joshua M. Pearce
- Department of Electrical & Computer Engineering, Ivey Business School, Western University, London, ON, Canada
| |
Collapse
|
48
|
Schall C, Schöppner V. Measurement of material degradation in dependence of shear rate, temperature, and residence time. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christoph Schall
- Kunststofftechnik Paderborn Paderborn University Paderborn Germany
| | - Volker Schöppner
- Kunststofftechnik Paderborn Paderborn University Paderborn Germany
| |
Collapse
|
49
|
Abstract
3D printing enables sustainable product innovations through novel design, reduced use of materials, and local manufacturing. Sustainable 3D printing can further be realized using recyclable materials. Cellulose is an abundantly available renewable material. Modified celluloses, such as thermoplastic cellulose esters, are widely used in injection molding applications. The aim of this research was to study the properties of a cellulose-based composite (cellulose acetate propionate (CAP) polymer matrix with 20 wt. % microcellulose) in injection molding and granular extrusion-based 3D printing processes over multiple recycles. The impact of the processing methods on the composite’s properties were investigated. Both injection molded and 3D printed samples were ground with plastic grinding mill to particle sizes below 3 mm after each preparation stage and reused as such in the next process cycle. Morphology, mechanical and thermal properties, and material degradation were analyzed. The thermoplastic cellulose-based compound was found to be directly recyclable for both processes without the need for any additional compounding steps. The polymer matrix was able to withstand at least seven processing cycles without degradation. However, microcellulose was found to be more sensitive to thermal stress. The mechanical and thermal properties of the cellulose-based composites remained close to initial levels throughout.
Collapse
|
50
|
Al-Mazrouei N, Ismail A, Ahmed W, Al-Marzouqi AH. ABS/Silicon Dioxide Micro Particulate Composite from 3D Printing Polymeric Waste. Polymers (Basel) 2022; 14:polym14030509. [PMID: 35160497 PMCID: PMC8837957 DOI: 10.3390/polym14030509] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 12/11/2022] Open
Abstract
In this paper, Acrylonitrile-Butadiene-Styrene matrix composites reinforced with Nano-silica dioxide particles were examined and prepared to study their mechanical properties. The composite sheets were pre-prepared using the hot extrusion process. Due to its wide characteristics, silica dioxide additions can strengthen the usability and mechanical features of composite thermoplastics and polymers. Furthermore, introducing silica dioxide as a filler in various attributes can help to maintain the smooth flow of sufficient powders, reduce caking, and manage viscoelasticity. Despite its advantages, 3D printing generates a significant amount of waste due to limited prints or destroyed support structures. ABS is an ideal material to use because it is a thermoplastic and amorphous polymer with outstanding thermal properties that is also applicable with the FFF (Fused Filament Fabrication) technique. The findings showed that increasing the silica dioxide content reduces the tensile strength to 22.4 MPa at 10 wt%. Toughness, ductility, and yield stress values of ABS/silica dioxide composites at 15 wt% increased, indicating that the composite material reinforced by the silica dioxide particles improved material characteristics. It is essential to consider the impact of recycling in polymer reinforcement with fillers. Furthermore, the improved mechanical qualities of the composite material encourages successful ABS recycling from 3D printing, as well as the possibility of reusing it in a similar application.
Collapse
Affiliation(s)
- Noura Al-Mazrouei
- Chemical and Petroleum Engineering Department, UAE University, Al-Ain P.O. Box 15551, United Arab Emirates; (N.A.-M.); (A.I.); (A.H.A.-M.)
| | - Ahmed Ismail
- Chemical and Petroleum Engineering Department, UAE University, Al-Ain P.O. Box 15551, United Arab Emirates; (N.A.-M.); (A.I.); (A.H.A.-M.)
| | - Waleed Ahmed
- Engineering Requirements Unit, UAE University, Al-Ain P.O. Box 15551, United Arab Emirates
- Correspondence:
| | - Ali H. Al-Marzouqi
- Chemical and Petroleum Engineering Department, UAE University, Al-Ain P.O. Box 15551, United Arab Emirates; (N.A.-M.); (A.I.); (A.H.A.-M.)
| |
Collapse
|