Results 21 to 30 of about 1,046,577 (390)

Study of Slurry Ethylene Polymerization with Ziegler-Natta Catalysts: Kinetics and Investigation on the Rate of Monomer Consumption Equation [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2008
In the current work, ethylene polymerization was investigated from a mathematical modeling point of view. The initiation (activation), propagation, termination, and deactivation reactions were taken into account and the relevant equations used in the ...
M. Salami-Kalajahi   +2 more
doaj   +1 more source

Polyethylene upcycling to long-chain alkylaromatics by tandem hydrogenolysis/aromatization

open access: yesScience, 2020
A new future for polyethylene Most current plastic recycling involves chopping up the waste and repurposing it in materials with less stringent engineering requirements than the original application.
Fan Zhang   +8 more
semanticscholar   +1 more source

The Optical Behavior of Polyethylene Spherulites [PDF]

open access: yes, 1967
Polyethylene was crytallized from the molten film under temperature gradient. As a result, the optically positive spherulites were observed, though only the negative spherulites had been observed previOusly in polyethylene.
Monobe, Kazuo, Suefusa, Kiyoshi
core   +1 more source

Aqueous synthesis of Nb-modified SnO2 quantum dots for efficient photocatalytic degradation of polyethylene for in situ agricultural waste treatment

open access: yesGreen Processing and Synthesis, 2021
Low density polyethylene is widely used in agricultural production. It is of low cost and able to significantly improve the quality of fruits. However, its decomposition under natural circumstances needs more than one hundred of years.
Shao Jia   +9 more
doaj   +1 more source

FDM preparation of bio-compatible UHMWPE polymer for artificial implant [PDF]

open access: yes, 2016
Due to its properties of high wear, creep resistance, high stiffness and strength, Ultra-High Molecular Weight Polyethylene (UHMWPE) was developed to eliminate most metallic wear in artificial implant, which conventionally found in stainless steel ...
Ahmad, M.   +3 more
core   +1 more source

Evaluation of photodegradation in LDPE/modified starch blends

open access: yesPolímeros, 2009
Photodegradation of LDPE/modified starch blends 80/20 m/m has been examined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X ray diffraction (DRX) before and after exposure to ultraviolet radiation (UV). Samples
Flávia G. D. Ferreira   +3 more
doaj   +1 more source

Catalytic Hydroxylation of Polyethylenes [PDF]

open access: yesACS Central Science, 2017
Polyolefins account for 60% of global plastic consumption, but many potential applications of polyolefins require that their properties, such as compatibility with polar polymers, adhesion, gas permeability, and surface wetting, be improved. A strategy to overcome these deficiencies would involve the introduction of polar functionalities onto the ...
Qian Li   +4 more
openaire   +5 more sources

Penelitian Pengaruh Penggunaan Riklim Politilen Terhadap Sifat Ketahanan Pukul Dan Kekerasan [PDF]

open access: yes, 1989
The aim of this research is to know further about the influence ot polyethylene reclaim to the characteristic of impact resistance and high density polyethylene (HDPE) compound.The research is done by making HDPE compound with the addition of ...
karani, S. (Sofyan)   +1 more
core   +2 more sources

Polyethylene materials with in-chain ketones from nonalternating catalytic copolymerization

open access: yesScience, 2021
Description Polyethylene with a nickel’s worth of CO The biggest problem with polyethylene, the most abundantly manufactured plastic, is that it doesn’t break down easily once it is discarded.
Max Baur   +4 more
semanticscholar   +1 more source

Desenvolvimento de nanocompósitos de poliamida6/polietileno/argila organofílica: o efeito do compatibilizante PE-g-MA no comportamento reológico da mistura Development of polyamide6/polyethylene/organoclay nanocomposites: the effect of the PE-g-MA compatibilizer on the rheological behavior of mixture

open access: yesPolímeros, 2008
O objetivo deste trabalho foi avaliar o efeito do compatibilizante PE-g-MA (5 e 10%) no comportamento reológico de nanocompósitos de poliamida6/polietileno/argila organofílica, onde a argila foi tratada com um sal quaternário de amônio (Cetremide).
Vanessa da N. Medeiros   +5 more
doaj   +1 more source

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