Challenges to Improve Extrusion‐Based Additive Manufacturing Process of Thermoplastics toward Sustainable Development

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: 45(17)

Published: May 31, 2024

Abstract This review aims to present the different approaches lessen environmental impact of extrusion‐based additive manufacturing (MEX) process thermoplastic‐based resins and protect ecosystem. The benefits drawbacks each alternative, including use biomaterials or recycled materials as feedstock, energy efficiency, polluting emissions reduction, have been examined. First, technological option using a pellet‐fed printer was compared filament‐fed printer. Then, common biopolymers utilized in MEX applications are discussed, along with methods for improving mechanical properties associated printed products. introduction natural fillers thermoplastic biocomposite filaments proposed improve specific performance items, highlighting numerous challenges related their extrusion. Various polymers derived from recycling presented feeding raw printers reduce waste accumulation, showing inferior qualities resulting goods when products made virgin materials. Finally, consumption released into atmosphere during printing potential both aspects be controlled through material selection operating conditions.

Language: Английский

---

Mechanical Performance of Recycled 3D Printed Sustainable Polymer-Based Composites: A Literature Review

Journal of Composites Science, Journal Year: 2024, Volume and Issue: 8(6), P. 215 - 215

Published: June 7, 2024

The development of efficient waste valorization strategies has emerged as an important field in the overall efforts for alignment with environmental goals that have been set by European Union (EU) Green Deal regarding sustainable circular economy models. Additive manufacturing a method secondary life product main advantages it being form net-zero production and having ability to successfully transport complex design actual products finding applications industry rapid prototyping or tailored products. insertion eco-friendly materials these processes can lead significant reduction material footprints lower energy demands process, helping achieve Sustainable Development Goal 12 (SDG12) EU responsible consumption. aim this comprehensive review is state existing progress incorporation polymeric composite additive (AM) identify possible gaps further research. In context, presentation reacquired coming from urban industrial are used produce composites made. Then, assessment printability mechanical response constructed made, taking into consideration some key thermal, rheological properties (e.g., viscosity, melting degradation temperature, tensile impact strength). Finally, cycle analysis results presented footprint during waste-to-feedstock processes. A lack scientific research was observed, manifestation novel evaluation techniques such dynamic testing. Assessing vital evaluating whether types adequate upscaling use real applications.

Language: Английский

---

Advancing wooden furniture manufacturing through intelligent manufacturing: the past, recent research activities and future perspectives

Wood Material Science and Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 22

Published: Jan. 1, 2025

With the deep integration of information technology and manufacturing industry, intelligent has become an essential means transformation upgrading for wooden furniture industry. However, current development status, technological advancements, future trends have not been comprehensively analyzed. This study employs bibliometrics visualization techniques to review literature on manufacturing, addressing three main questions: (1) What is stage global development? (2) are primary research focuses in manufacturing? (3) should be priorities The results indicate that while scholars recognized as effective approach transforming there remains significant room applying advanced technologies, sustainable development, talent training, management, resource utilization, market dynamics. Finally, this proposes a full value chain system enterprises, encompassing "Intelligent Product Design", Strategic Decision-making", Technology Research Development", Manufacturing", which aims promote

Language: Английский

---

A Breakthrough in Producing Personalized Solutions for Rehabilitation and Physiotherapy Thanks to the Introduction of AI to Additive Manufacturing

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(4), P. 2219 - 2219

Published: Feb. 19, 2025

The integration of artificial intelligence (AI) with additive manufacturing (AM) is driving breakthroughs in personalized rehabilitation and physical therapy solutions, enabling precise customization to individual patient needs. This article presents the current state knowledge perspectives using solutions for physiotherapy thanks introduction AI AM. Advanced algorithms analyze patient-specific data such as body scans, movement patterns, medical history design customized assistive devices, orthoses, prosthetics. synergy enables rapid prototyping production highly optimized improving comfort, functionality, therapeutic outcomes. Machine learning (ML) models further streamline process by anticipating biomechanical needs adapting designs based on feedback, providing iterative refinement. Cutting-edge techniques leverage generative topology optimization create lightweight yet durable structures that are ideally suited patient’s anatomy goals .AI-based AM also facilitates multi-material devices combine flexibility, strength, sensory capabilities, improved monitoring support during therapy. New include integrating smart sensors printed real-time collection feedback loops adaptive Additionally, these becoming increasingly accessible technology lowers costs improves, democratizing healthcare. Future advances could lead widespread use digital twins simulation before production. AI-based virtual reality (VR) augmented (AR) tools expected provide immersive, training environments along aids. Collaborative platforms federated can enable healthcare providers researchers securely share insights, accelerating innovation. However, challenges regulatory approval, security, ensuring equity access technologies must be addressed fully realize their potential. One major gaps lack large, diverse datasets train models, which limits ability span different demographics conditions. Integration AI–AM systems into should focus processing techniques.

Language: Английский

---

Overview of the Impacts of Additive Production Techniques on the Environment: Production of Continuous Fibers, Direct Laser Sintering of Metals and Selective Laser Sintering Techniques

Published: March 3, 2025

Additive manufacturing (AM) has experienced significant growth in recent years, emerging as a transformative technology with broad applications across various industries. This review explores the advantages, disadvantages, and environmental impacts of AM, an important area consideration this continues to gain popularity. By analyzing existing literature, we assess challenges associated AM processes, particularly comparison traditional methods. greatest potential contribute sustainable development by production lightweight components complex industrial products intricate designs. These are made minimal material usage. Consequently, also waste emissions reduced, which advantages. Overall, highlights importance tool for advancing sustainability offers valuable insights Continuous Fiber Fabrication, Direct Metal Laser Sintering, Selective Sintering techniques enhance their competitive advantage while reducing impact.

Language: Английский

---

In vitro cell-transforming capacity of micro- and nanoplastics derived from 3D-printing waste

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 293, P. 118007 - 118007

Published: March 1, 2025

The increasing use of plastic polymers in 3D printing applications may lead to human exposure micro- and nanoplastics (MNPLs), raising concerns regarding adverse health consequences such as cancer induction. Little attention has been given MNPLs originated at the end life cycle 3D-printed objects because mechanical environmental degradation waste. This study assessed carcinogenic potential secondary generated through cryomilling using validated vitro Bhas 42 cell transformation assay (CTA). Three-dimensional were printed four types polycarbonate (PC)- polypropylene (PP)-modified thermoplastic filaments, undoped doped with single-walled carbon nanotubes (PC-CNT) silver nanoparticles (PP-Ag), respectively. (< 5 µm) following a three-step top-down process thoroughly characterized. cells treated once (initiation assay) or repeatedly (promotion several concentrations (3.125-100 µg/mL) mimicking realistic conditions, transformed foci formation was evaluated after 21 days. Furthermore, cellular internalization mRNA expression seven genes previously recognized part predictive early signature also evaluated. Despite being internalized, none particles able initiate promote transformation, regardless doping nanomaterials. Alternatively, all significantly increased decreased Prl2c3 Timp4, respectively, under promotion indicating changes that occur before foci. These findings suggest test could have tumorigenic despite not showing morphological cells.

Language: Английский

---

Reinforced Polymer Composite Filaments in Fused Deposition Modeling of 3D Printing Technology: A Review

Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Fused deposition modeling (FDM) is one of the most commonly used 3D printing techniques. FDM uses thermoplastics to manufacture final product. This review article provides a comprehensive overview use composite materials in printing. It explores various filament manufacturing methods, highlighting extrusion The main advantages using are discussed, then recycled filaments, their benefits, and difficulties possibilities related applications covered. Next, filaments aerospace, automotive, medical, electronics, prosthetics/orthotics explored. Finally, discusses current challenges suggests future directions for research.

Language: Английский

---

A decision-making strategy for selection of FDM-based additively manufactured thermoplastics for industrial applications based on material attributes

Sustainable Futures, Journal Year: 2025, Volume and Issue: unknown, P. 100640 - 100640

Published: April 1, 2025

Language: Английский

---

Additive manufacturing of functional polymers and nanocomposites: opportunities and challenges

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 133 - 156

Published: Jan. 1, 2025

Language: Английский

---

Enhancing the Weld Quality of Polylactic Acid Biomedical Materials Using Rotary Friction Welding

Polymers, Journal Year: 2024, Volume and Issue: 16(7), P. 991 - 991

Published: April 4, 2024

Polylactic acid (PLA) stands out as a biomaterial with immense potential, primarily owing to its innate biodegradability. Conventional methods for manufacturing PLA encompass injection molding or additive (AM). Yet, the fabrication of sizable medical devices often necessitates fragmenting them into multiple components printing, subsequently requiring reassembly accommodate constraints posed by dimensions AM platform. Typically, laboratories resort employing nuts and bolts assembly printed expansive devices. Nonetheless, this conventional approach jointing is susceptible inherent risk loosening dislodging amid reciprocating movements apparatus. Hence, investigation joining techniques integrating has emerged critical focal point within realm research. The main objective enhance joint strength polymer rods using rotary friction welding (RFW). mean bending welded components, fabricated under seven distinct rotational speeds, surpasses that underlying substrate material. average improvement rate parts RFW three-stage transformation 4000 rpm about 41.94% compared base surface hardness weld interface 1.25 3.80% higher than performed variable speed at fixed rotating speed. temperature rise maximum recorded during in X-axis CNC turning machine outer edge part surpassed those observed internal part. Remarkably, proposed method study complies Sustainable Development Goals due high energy efficiency low environmental pollution.

Language: Английский

---