Results 61 to 70 of about 3,337 (294)
Dissymmetric dinuclear transition metal complexes as dual site catalysts for the polymerization of ethylene [PDF]
Polyolefins Journal, 2014 A series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization, by coupling the allylated a-diimine complexes of the metals Ti, Zr, V, Ni and Pd with the ansa-zirconocene complex [C5H4-SiH(Me)-C5H4]ZrCl2 ...
Haif Alshammari, Helmut G. Alt
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, 2023 Polyethylene is a commodity material that is widely used because of its low cost and valuable properties. However, the lack of functional groups in polyethylene limits its use in applications that include adhesives, gas barriers, and plastic blends.
Phillip B. Messersmith (765789) +21 more
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Advanced Engineering Materials, EarlyView.This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera +8 more
wiley +1 more source
Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition
Advanced Engineering Materials, EarlyView.A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley +1 more source
Analysis of the effects of local stress transmission on yielding properties of the polyethylenes
, 2008 cited By 1International audienceTo study the influence of the microstructure on the mechanical properties of the semicrystalline polymers, heat treatments were performed on polyethylenes in order to, either vary the microstructural parameters ...
Vigier, G., Lame, O., Humbert, S.
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Evaluating Energy Absorption Performance of Filled Lattice Structures
Advanced Engineering Materials, EarlyView.Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney +2 more
wiley +1 more source
High-temperature solvent gradient liquid chromatography of model long chain branched polyethylenes
, 2022 S.70-76The high-temperature solvent gradient liquid chromatography system 1-decanol/1,2,4-trichlorobenzene/porous graphite HypercarbTM has been applied to the separation of well-defined model long chain branched (LCB) polyethylenes with different ...
Macko, Tibor +3 more
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Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
Macromolecular Materials and Engineering, 2022 Bimodal high‐density polyethylene (bHDPE) is a complex, multicomponent polyethylene (PE) material whose synthesis in a multistage process can be challenging.
Anthony Ndiripo +5 more
doaj +1 more source
Friction and wear of two polyethylenes under different tribological contact conditions [PDF]
, 2020 \ua9 The Author(s) 2020. Tribological properties of ultrahigh-molecular weight polyethylene (UHMWPE) and cross-linked polyethylene (XLPE) were studied in two different wear modes.
Joyce TJ, Harsha AP, Wasche R
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