Polymer, Journal Year: 2024, Volume and Issue: 314, P. 127783 - 127783
Published: Nov. 1, 2024
Language: Английский
Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1309, P. 138243 - 138243
Published: April 3, 2024
This comprehensive review is an in-depth analysis of polylactic acid (PLA), increasingly important biopolymer due to its wide-ranging applications and sustainability features. PLA's physical, thermal, mechanical properties are closely linked molecular distribution, mass, stereochemistry, allowing it exist in amorphous or semicrystalline states. The controlled polymerization different optical monomers enables the creation PLA variants with distinct properties. To address inherent hardness limitation, researchers exploring blends stereo complexes like PLLA/PDLA, leading enhanced thermal characteristics. moldability supports versatility various forms, from nanoparticles resorbable sutures. Focusing on composite materials, delves into reinforcement synthetic natural fibers, micro- nanoparticles. incorporation such as wood, cotton, carbon-based synthetics, significantly influences composite's Additionally, rise nanoscale fillers, including clays nanoparticles, has offered cost-effective solutions for material performance. Synthesis methods encompass direct polycondensation ring opening, latter preferred better control polymerization. Furthermore, highlights degradation behavior polymer which, together biocompatible eco-friendly production methods, makes a potential biological applications. innovative features, obtained by bibliometric map generated VosViewer software Scopus database, role biomedical field, particular tissue engineering improving healing rates and, well implants prosthetics.
Language: Английский
Citations
74
Journal of Materials Science, Journal Year: 2024, Volume and Issue: 59(44), P. 20496 - 20539
Published: Nov. 1, 2024
Language: Английский
Citations
17
Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3368 - 3368
Published: Nov. 29, 2024
The integration of machine learning (ML) into material manufacturing has driven advancements in optimizing biopolymer production processes. ML techniques, applied across various stages production, enable the analysis complex data generated throughout identifying patterns and insights not easily observed through traditional methods. As sustainable alternatives to petrochemical-based plastics, biopolymers present unique challenges due their reliance on variable bio-based feedstocks processing conditions. This review systematically summarizes current applications techniques aiming provide a comprehensive reference for future research while highlighting potential enhance efficiency, reduce costs, improve product quality. also shows role algorithms, including supervised, unsupervised, deep
Language: Английский
Citations
5
Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(19), P. 5624 - 5633
Published: Jan. 1, 2024
Switching the preference in stereocontrolled rac -LA ROP.
Language: Английский
Citations
4
Journal of Polymer Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 6, 2025
ABSTRACT We aim to deepen our understanding of the structure‐performance relationship in Ziegler–Natta catalysts (ZNCs) for propylene polymerization. To this end, three different Mg(OEt)₂ supports were synthesized by reacting magnesium powder with varying amounts MnCl₂ during magnesium‐ethanol reaction stage. Despite similar XRD patterns among all obtained Mg(OEt) 2 samples, at an optimal MnCl /Mg ratio g/g, well‐spherically shaped particles plate‐like building units formed. The prepared support precursors then used ZNC synthesis TiCl₄/Mg(OEt)₂ ratios and internal donor types, their behavior polymerization was thoroughly explored. overall results indicated that Ti/Mg is 8 mol/mol. Additionally, phthalate as demonstrated higher activity compared diethyl ether or succinate‐based donors. kinetic curve uptake versus time experiments external content mathematically modeled evaluate changes rate constants. calculated constants showed increases, k trH , d iED tED enhance, while p decreases significantly due poisoning active sites donor. These findings highlight critical role type amount catalyst components achieving performance.
Language: Английский
Citations
0
Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106037 - 106037
Published: Feb. 1, 2025
Language: Английский
Citations
0
ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 4141 - 4146
Published: Feb. 22, 2025
Language: Английский
Citations
0
Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 828 - 828
Published: March 20, 2025
Poly (lactic acid) (PLA), a biodegradable polymer, is widely used in medical applications, particularly for 3D-printed tissue engineering scaffolds. The fused filament fabrication (FFF) 3D printer an available processing tool PLA. nozzle scan pattern and interior fill percentage (IFP) considerably influence the mechanical properties of formed structures may have dominant effects on rates at which PLA deteriorate. When IFP set to low value, such as 80%, internal gaps form within structure, leading different deterioration patterns compared under 100% condition. In this study, we fabricated test pieces with FFF using three patterns. After immersing phosphate buffer saline (PBS) up 120 days, water content was measured underwent tensile testing determine strength, elastic modulus, breaking energy. Both rate uptake varied among fabrication. For gaps, proceeded two stages. faster than that fully filled structures. data obtained study will be useful design applied engineering.
Language: Английский
Citations
0
International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(17), P. 9608 - 9608
Published: Sept. 5, 2024
The electrospinning process is an effective technique for creating micro- and nanofibers from synthetic natural polymers, with significant potential biomedical applications drug delivery systems due to their high drug-loading capacity, large surface area, tunable release times. Poly(L-lactic acid) (PLLA) stands out its excellent thermo-mechanical properties, biodegradability, bioabsorbability. Electrospun PLLA nanofibrous structures have been extensively investigated as wound dressings, sutures, carriers, tissue engineering scaffolds. This study aims create characterize electrospun membranes loaded spironolactone (SP), mimicking active compounds of Ganoderma lucidum (GL), develop a biodegradable patch topical wound-healing applications. GL, medicinal mushroom, enhances dermal healing bioactive compounds, such polysaccharides ganoderic acids. Focusing on GL extracts—obtained through green extraction methods—and innovative delivery, we created new fibers To integrate complex mixtures into the fibers, developed prototype using single pure substance representing extract mixture. painstaking work presents results fabricating, wetting, moisture material resilience, full characterization product, providing robust rationale fabrication imbued more extracts.
Language: Английский
Citations
1
Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 22, 2024
Abstract The origin of stereocontrol in ring opening polymerization (ROP) racemic lactide ( rac ‐LA) promoted by achiral aluminium‐based catalysts has been explained through DFT calculations combined with a molecular descriptor (% V Bur ) and the activation strain model (ASM‐NEDA) analysis. proposed chain end control (CEC) suggests that ligand framework adopts chiral configuration mimicking enantiomorphic site (ESC) while also incorporating last inserted monomer unit. It is found wrapping mode around aluminium centre dictated R , ‐LA S ‐LA). A good correlation experimental data achieved only when accounting for dynamic features its steric influences, as highlighted % maps ASM‐NEDA Understanding ESC CEC interplay an important target obtaining stereoselective ROP synthesis biodegradable materials tailored properties.
Language: Английский
Citations
1