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Different polymethylmethacrylate (PMMA) reinforcement strategies for long bone osteoplasty procedures: a controlled laboratory comparison using the 4-point bending test.
BMC Musculoskelet Disord
December 2024
Experimental Orthopaedics, Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, 6020, Austria.
Background: Cementoplasty has been successfully used for treating fractures in various parts of the human body, although the use in weight-bearing long bones is a subject of controversial debate. Strategies to improve the mechanical properties of polymethylmethacrylate-based bone cement (BC) comprise changing the chemical composition or the application of metal reinforcement strategies. In clinical practice reinforced bone cement is used despite biomechanical basic research regarding this topic being scare.
View Article and Find Full Text PDFFriction Behaviors and Wear Mechanisms of Carbon Fiber Reinforced Composites for Bridge Cable.
Polymers (Basel)
December 2024
Key Lab of Structures Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Harbin 150090, China.
Carbon fiber reinforced epoxy resin composites (CFRP) demonstrate superior wear resistance and fatigue durability, which are anticipated to markedly enhance the service life of structures under complex conditions. In the present paper, the friction behaviors and wear mechanisms of CFRP under different applied loads, sliding speeds, service temperatures, and water lubrication were studied and analyzed in detail. The results indicated that the tribological properties of CFRP were predominantly influenced by the applied loads, as the tangential displacement generated significant shear stress at the interface of the friction pair.
View Article and Find Full Text PDFAssessing the chemical interactions and biological effects of a petrochemical and bio-based plastic with a common plastic flame retardant and solvent.
Sci Total Environ
December 2024
School of Biosciences, Cardiff University, CF10 3AX, UK.
Microplastic pollution remains a persistent environmental challenge for aquatic environments. Yet, health impact assessments of microplastics focus largely on the polymers themselves. It is important to understand the chemical behaviour and biological effects of both plastics and chemicals associated with their production, such as additives and solvents.
View Article and Find Full Text PDFBeyond the Landfill: A critical review of techniques for End-of-Life Polyvinyl chloride (PVC) valorization.
Waste Manag
December 2024
Laboratory for Chemical Technology (LCT), Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark-Zwijnaarde 125, B-9052, Belgium. Electronic address:
Article Synopsis
- Polyvinyl chloride (PVC) is a highly versatile and cost-effective polymer made from over 50% chlorine, widely used in construction, medical applications, and electrical cables.
- Although PVC recycling is feasible when collected and sorted properly, it poses challenges when mixed with other plastic waste, complicating the recycling process.
- The review explores various end-of-life (EoL) strategies for PVC, highlighting technical and legal challenges in recycling, particularly in Europe, and suggests that effective handling requires a combination of policies, sorting methods, and technology.
Rac1 inhibition regenerates wounds in mouse fetuses via altered actin dynamics.
Sci Rep
November 2024
Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Mammalian wounds leave visible scars, and there are no methods for complete regeneration. However, mouse fetuses regenerate their skin, including epidermal and dermal structures, up to embryonic day (E)13. This regeneration pattern requires the formation of actin cables in the wound margin epithelium; however, the molecular mechanisms are not fully understood.
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