Results 301 to 310 of about 355,391 (369)

Chemical Modification of Oxidized Polyethylene Enables Access to Functional Polyethylenes with Greater Reuse.

Journal of the American Chemical Society, 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.
Jake X. Shi, Nicodemo R. Ciccia, Subhajit Pal, Diane D. Kim, John N Brunn, Carlos Lizandara‐Pueyo, Martin Ernst, Alexander M Haydl, Phillip B. Messersmith, Brett A. Helms, John F. Hartwig   +10 more
semanticscholar   +1 more source

High Density Polyethylenes Bearing Isolated In-Chain Carbonyls.

Angewandte Chemie, 2021
Polyethylene materials are highly important polymers which are produced in the largest volume among all plastics. Due to the chemical inert property of saturated carbon-carbon bonds, the degradation of polyethylene is extremely challenging, which ...
K. Nozaki, Shan Tang, F. W. Seidel
semanticscholar   +1 more source

Trifluoromethoxy-substituted nickel catalysts for producing highly branched polyethylenes: impact of solvent, activator and N,N′-ligand on polymer properties

Polymer Chemistry, 2022
Highly branched and narrowly dispersed polyethylenes with high or ultra-high molecular weights are accessible using the depicted nickel precatalyst/activator combinations.
Ming Liu, Randi Zhang, Yanping Ma, Ming Han, G. Solan, Wenhong Yang, Tongling Liang, Wen‐Hua Sun   +7 more
semanticscholar   +1 more source

Polyethylene-polyethylene microfibrillar composites

Journal of Materials Science, 1993
Solid-state drawing of melt-crystallized, or gel(solution)-crystallized, polyethylene (PE) is well established as a means of producing high modulus high-strength fibres. Here, an alternative route, based on melt-processing, is reviewed and its merits are assessed.
Bashir, Z, Odell, JA
openaire   +1 more source

Polyethylene/deutero-polyethylene phase behaviour

Polymer, 1985
Abstract A study of the phase behaviour of polyethylene/deuterated polyethylene (PEH/PED) has been carried out to address the question of phase segregation. The phase diagram has been determined by differential scanning calorimetry on carefully co-crystallized mixtures of PEH and PED that are of essentially the same molecular weight.
A.D. English, P. Smith, D.E. Axelson
openaire   +1 more source

Design and Characterization of Model Linear Low-Density Polyethylenes (LLDPEs) by Multidetector Size Exclusion Chromatography

, 2020
Separations of commercial polyethylenes, which often involve mixtures and copolymers of linear, short-chain branched, and long-chain branched chains, can be very challenging to optimize as species ...
S. Orski, Luke A. Kassekert, Wesley S. Farrell, Grace A. Kenlaw, M. Hillmyer, K. Beers   +5 more
semanticscholar   +1 more source

Synthesis of Various Branched Ultra-High-Molecular-Weight Polyethylenes Using Sterically Hindered Acenaphthene-Based α-Diimine Ni(II) Catalysts

Organometallics, 2018
A series of highly sterically hindered acenaphthene-based α-diimine nickel complexes with the remote R group in 4-position of diarylmethyl moiety have been synthesized and characterized.
Lihua Guo, Kunbo Lian, Wenyu Kong, Shuai Xu, Guorun Jiang, Shengyu Dai   +5 more
semanticscholar   +1 more source

Chemically Recyclable Linear and Branched Polyethylenes Synthesized from Stoichiometrically Self-Balanced Telechelic Polyethylenes.

Journal of the American Chemical Society
High-density polyethylene (HDPE) is a widely used commercial plastic due to its excellent mechanical properties, chemical resistance, and water vapor barrier properties.
Yoon-Jung Jang, Sam Nguyen, M. Hillmyer
semanticscholar   +1 more source