Results 141 to 150 of about 6,560,781 (189)
Synthesis and Deconstruction of Polyethylene-Type Materials
Chemical ReviewsPolyethylene deconstruction to reusable smaller molecules is hindered by the chemical inertness of its hydrocarbon chains. Pyrolysis and related approaches commonly require high temperatures, are energy-intensive, and yield mixtures of multiple classes of compounds. Selective cleavage reactions under mild conditions (
Maximilian Baur +2 more
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Morphology of polyethylene ski base materials
Journal of Sports Sciences, 2010We used high-resolution Raman spectroscopy and differential scanning calorimetry for a comprehensive analysis of carbon black-filled polyethylene ski base grades at processing stages from the raw material to the structured ski base. Based on Raman mapping, we assessed the applicability of an advanced evaluation procedure for amorphous, disordered, and ...
Jörg, Fischer +2 more
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Polyethylene—The Material of Chance
2021This chapter begins by looking at the history of polyethylene from its unintended synthesis through to its position as the most widely used, by far, plastic. Consisting of relatively simple molecular chains, containing just two types of atom carbon and hydrogen, polyethylene can be shaped into fibers, pipes, a wide array of containers, made into a foam,
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Delamination Controlled Ballistic Resistance of Polyethylene/Polyethylene Composite Materials
Applied Composite Materials, 2002We have investigated ballistic response of polyethylene/polyethylene (PE/PE) composites to impact by Uzi bullets. For comparison, limited work was carried out on PE/aramid fiber hybrids and PE fiber/Polycarbonate plate laminates. The plates exhibited an average ballistic resistance, V 50, of approximately 90 m/s per 1 kg/m2 area density. In term of the
H. Harel, G. Marom, S. Kenig
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Infrared refractive index of polyethylene and a polyethylene-based material
Optical Engineering, 2011Polyethylene-based materials are used in many infrared products, including motion detectors. However, little data exists for their infrared optical properties, except at wavelengths longer than 22 μm. The refractive indices of two such materials were measured in the 9.25 to 10.6 μm spectral range, using refraction through thin prisms.
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Failure of polyethylene gas pipe materials
Construction and Building Materials, 1989Abstract Two of the pipe resins that are commonly used in the USA are compared with respect to their relative life times. The improvement in the performances of the currently used materials compared to the older material from the same producer have been measured.
N. Brown, X. Lu
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[Polyethylene as an implant material].
Der Orthopade, 2003Since the early 1960s, ultrahigh-molecular weight polyethylene (UHMWPE) has been one of the most frequently and successfully used materials in total joint replacement. However, in the course of clinical usage, various weaknesses of the material became apparent including wear and aging properties.
R M, Streicher, M, Thomsen
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Electrochemical recovery and regeneration of polyethylene terephthalate materials
Materials HorizonsElectrocatalytic reforming efficiently converts waste PET plastics into high-value chemicals such as formic acid and glycolic acid, creating a 'waste-resource' circular economy path with economic and environmental benefits.
Chao Chen +8 more
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Polyethylene Gradient Material, Processing and Properties
Materials Science Forum, 1999This paper presents the successful development and manufacture of polyethylene gradient material and polyethylene fibre/polyethylene matrix composites with superior mechanical properties. PE-samples with a gradient in molecular weight (MW) and polyethylene / polyethylene composites were characterised by light microscopy, atomic force microscopy (AFM ...
K. Schulte, A. Poeppel
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[Innovative materials in orthopaedics: the crosslinked polyethylene (XPE)].
Annali di igiene : medicina preventiva e di comunita, 2011More than 150.000 hip and knee arthroplasties are performed every year in Italy. More than 50% of the patients receive a polyethylene component (Ultra High Molecular Weight PolyEthylene, UHMWPE). Polyethylene abrasive wear induces over time in vivo a foreign-body response and consequently osteolysis, pain and need of implant revision.
Torre M +5 more
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