Journal of Transport and Supply Chain Management, Journal Year: 2024, Volume and Issue: 18
Published: May 31, 2024
Language: Английский
Global Challenges, Journal Year: 2024, Volume and Issue: 8(7)
Published: April 23, 2024
This review aims to provide an overview of sustainable approaches that can be incorporated into well-known procedures for the development materials, pre- and post-treatments, modifications, applications 3D-printed objects, especially fused filament fabrication (FFF). Different examples conductive non-conductive bespoke filaments using renewable biopolymers, bioplasticizers, recycled materials are presented discussed. The main final characteristics polymeric achieved according feedstock, preparation, extrusion, treatments also covered. In addition recycling remanufacturing, this explores other alternative adopted enhance sustainability methods, aiming produce efficient environmentally friendly 3D printed products. Adjusting printing parameters miniaturizing systems highlighted in regard. All these recommended strategies employed minimize environmental damage, while enabling production high-quality, economical systems. These efforts align with principles Green Chemistry, Sustainable Development Goals (SDGs), 3Rs (Reduce, Reuse, Recycle), Circular Economy concepts.
Language: Английский
Citations
10
Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 606 - 606
Published: Feb. 24, 2025
This study investigates enhancing polylactic acid (PLA) by incorporating recycled polycarbonate (r-PC) to address PLA's inherent brittleness and limited thermal stability. Blends with varying PLA/r-PC ratios (100:0 0:100) were prepared using an internal mixer, r-PC sourced from discarded compact discs. The thermogravimetric analysis (-A) demonstrated significant improvements in the degradation onset temperature (T5 wt%) increased approximately 315 °C for pure PLA about 400 blends, a maximum decomposition (Tmax) of 520 observed r-PC. char residue also markedly, 1.35% 24.42% r-PC, indicating enhanced resistance. Differential scanning calorimetry (DSC) revealed considerable reduction crystallinity, declining 68.17% 10.32% 10PLA90r-PC blend, indicative disruption crystalline structure. X-ray diffraction (XRD) supported these findings, showing transition predominantly amorphous structure at higher contents. Tensile testing highlighted mechanical achieved through blending. While exhibited brittle failure, 30PLA70r-PC blend displayed plastic deformation, signifying improved toughness. stress-strain that peak toughness 8725 kJ/m3, nearly ten times than 924 kJ/m3 recorded PLA. However, excessive content introduced brittleness, diminishing dynamic (DMTA) broadening glass range, Tg shifting 61 141 r-PC-dominant reflecting phase interactions between two polymers. Scanning electron microscopy (SEM) morphological changes; high contents, separation voids observed, leading reduced performance. These results highlight synergistic potential blending biodegradability r-PC's superior properties.
Language: Английский
Citations
2
Sustainability, Journal Year: 2023, Volume and Issue: 15(21), P. 15312 - 15312
Published: Oct. 26, 2023
The biodegradable biopolymer polylactic acid (PLA) has been used in the recent past single-use packaging as a suitable replacement for non-biodegradable fossil fuel-based plastics, such polyethylene terephthalate (PET). Under FDA and EU regulations, lactic (LA), building block of PLA, is considered safe to use food contact material. mechanical, thermal, barrier properties PLA are, however, major challenges this brittle material with Young’s modulus 2996–3750 MPa an elongation at break 1.3–7%. glass transition temperature (Tg) 60 °C, exhibiting structural distortion temperature. water permeability can lead hydrolytic degradation These be improved blending composites. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), instance, increases thermal stability while decreasing by up 59%. Polypropylene (PP) one most common plastics reusable containers. This study will compare PLA-based blends composites currently PP sustainable alternative plastics. end-of-life options containers are considered, commercial cost replacing PLA.
Language: Английский
Citations
16
Chem, Journal Year: 2024, Volume and Issue: 10(10), P. 3040 - 3054
Published: June 26, 2024
Language: Английский
Citations
5
Global Challenges, Journal Year: 2023, Volume and Issue: 7(7)
Published: May 5, 2023
Polylactic acid (PLA) is the bioplastic with highest market share. However, it mainly produced from first-generation feedstock and there are various inconsistencies in literature terms of its production recycling processes, carbon footprint, prices. The aim this study to compile contrast these aspects investigate second-generation PLA technical, economic, ecological perspectives simultaneously. comprehensive analyses also show chances challenges originating a supply chain specific region. Herein, German Federal State North Rhine-Westphalia (NRW) has been chosen as region interest. In addition highlighting industrial capabilities synergies, quantifies illustrates locations different suitable feedstocks identified potentials can be challenged by obstacles such high demand bioresources, quality, spatial aspects, logistics. Furthermore, substantial price gap between fossil-based plastics discourage investors include on their portfolios. Thus, provides recommendations overcome promote regional value chains bioplastics which may serve prototype for other regions.
Language: Английский
Citations
10
Fungal biology, Journal Year: 2025, Volume and Issue: unknown, P. 27 - 58
Published: Jan. 1, 2025
Language: Английский
Citations
0
ACS Omega, Journal Year: 2024, Volume and Issue: 9(6), P. 6578 - 6587
Published: Feb. 1, 2024
Polymer blending offers an effective and economical approach to overcome the performance limitations of poly(lactic acid) (PLA). In this study, a series copolymers poly(ethylene succinate-co-lactic (PESL) were synthesized, featuring lactic acid (LA) contents that ranged from 20 86 wt %. This synthesis involved one-pot industrial melt polycondensation process using succinic (SA), ethylene glycol (EG), LA, catalyzed by titanium tetraisopropoxide (TTP). The goal was produce fully biobased copolymer expected exhibit partial miscibility with pure To assess capability PESL in toughening PLA, we conducted tensile testing on PLA/PESL blends containing 15 % PESL. As result, elongation at break for loading PESL72 directly enhanced 250% ultimate strength 35 MPa, compared brittle PLA less 10% length. morphological features interfacial adhesion before after failure measured scanning electron microscopy (SEM). A significant enhancement chain mobility further evidenced differential calorimetry (DSC) dynamic mechanical analysis (DMA). These findings hold promise development functional packaging materials based PLA. proposed design, which boasts strong feasibility, can serve as valuable guide enhancing toughness
Language: Английский
Citations
2
Polymers, Journal Year: 2024, Volume and Issue: 16(4), P. 506 - 506
Published: Feb. 13, 2024
Commercially available poly(lactic acid) exhibits poor hydrolytic stability, which makes it impossible for use in durable applications. Therefore, a novel hydrolysis inhibitor based on an aziridine derivative as well stabilizer composition, containing and acid scavenger, were investigated to improve the stability. To evaluate stabilizing effect, melt volume rate (MVR) molecular weight monitored during accelerated aging water at elevated temperatures. Temperatures selected according glass transition temperature (~60 °C) of PLA. It was shown that composition exhibited excellent performance aging, exceeding commercially alternatives, e.g., polymeric carbodiimides. A analysis resulted decrease only 10% approximately 850 h up 20% after 1200 whereas stabilized with commercial polycarbodiimide revealed comparable reductions 300 h. Furthermore, stabilization mechanism alone, synergistic combination scavenger (calcium hydrotalcite), using nuclear magnetic resonance (NMR) spectroscopy. In addition improved thermal properties also enhanced compared
Language: Английский
Citations
2
Heliyon, Journal Year: 2024, Volume and Issue: 10(20), P. e39252 - e39252
Published: Oct. 1, 2024
In today's world, environmental concerns about plastic pollution of aquatic and terrestrial ecosystems are at the forefront many conversations. However, a solution that is gaining momentum bioplastics. Bioplastics come from sustainable biological sources such as plants, bio-waste, or microorganisms, rather than non-renewable fossil fuels like petroleum natural gas. The properties Azolla, including its growth in environments, high nutrient content, ability to symbiotically fix nitrogen, make it an intriguing candidate for bioplastics feedstock. By analyzing current state research on bioplastics, this review aims demonstrate feasibility, challenges sustainability new environmentally friendly alternative plastics. Thus, we contribute ongoing discourse addressing degradation through innovative, materials. results show unique Azolla rapid nutritional content strong contender raw Azolla-based can be helpful conventional crucial address related cultivation, processing, economic feasibility practical implementation. opportunity reduce impact waste more future.
Language: Английский
Citations
2
Journal of Transport and Supply Chain Management, Journal Year: 2024, Volume and Issue: 18
Published: May 31, 2024
Language: Английский
Citations
0