Results 11 to 20 of about 751,378 (297)

On the low reinforcing efficiency of carbon nanotubes in high-performance polymer fibres

open access: yesNanocomposites, 2021
Driven by the exceptionally high mechanical properties of carbon nanotubes (CNTs), over the years an extensive research effort has been devoted to the reinforcement of high-performance polymer fibres with CNTs.
Stergios Goutianos, Ton Peijs
doaj   +1 more source

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

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 Bisphenol-A Release from Vacuum formed Retainers after Immersion in Distilled Water using High Performance Liquid Chromatography: A Randomised Clinical Trial [PDF]

open access: yesJournal of Clinical and Diagnostic Research
Introduction: With the increasing demand for aesthetics, the popularity of Vacuum-formed Retainers (VFRs) has been on the rise. Bisphenol-A (BPA) is added to the polymers to make them clear and tough. BPA is identified as an endocrine disruptor linked to
Lalita Girish Nanjannawar   +5 more
doaj   +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

Aquatic Toxicity of Polyethylene and Microcrystalline Cellulose Microbeads Used as Abrasives in Cosmetics [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2023
Microplastics have been part of personal care products for years, but due to microplastic pollution, many companies have replaced microplastics with natural particles, such as microcrystalline cellulose.
M. Miloloža   +3 more
doaj   +1 more source

Influence of Microplastics on the Growth and the Intestinal Microbiota Composition of Brine Shrimp

open access: yesFrontiers in Microbiology, 2021
Microplastics (MPs) are ubiquitous in the aquatic environment and can be frequently ingested by zooplankton, leading to various effects. Brine shrimp (Artemia parthenogenetica) has an important role in the energy flow through trophic levels in different ...
Hongyu Li   +10 more
doaj   +1 more source

STUDY OF FAST ELECTRON IRRADIATION EFFECT ON THE STRUCTURE AND SURFACE OF POLYAMIDE/ POLYETHYLENE/ETHYLENE VINYL ACETATE FILM MATERIAL USING THE UELR 10-10-40 PLANT

open access: yesПищевые системы, 2019
Radiation effect on the PA/PE/Eva film material with a thickness of 55 μm was investigated at theBurnazyanCenterusing radiation processing plant (RPP) with the UELR‑10–10–40 accelerator at 10 MeV.
V. T. Tarasyuk   +4 more
doaj   +1 more source

Synthesis of high molecular weight polyethylene using FI catalyst [PDF]

open access: yesPolyolefins Journal, 2014
A FI Zr-based catalyst of bis[N-(3,5-dicumylsalicylidene)-2′,6′­diisopropylanilinato]zirconium(IV) dichloride was prepared and used for polymerization of ethylene. The effects of reaction conditions on the polymerization were examined in detail.
G. Zohuri   +4 more
doaj   +1 more source

High Melting Point of Linear, Spiral Polyethylene Nanofibers and Polyethylene Microspheres Obtained Through Confined Polymerization by a PPM‐Supported Ziegler‐Natta Catalyst

open access: yesChemistryOpen, 2020
In this work, different types of polyethylene (linear, spiral nanofibers and microspheres) were obtained via confined polymerization by a PPM‐supported Ziegler‐Natta catalyst.
Dr. Yu Xiao   +3 more
doaj   +1 more source

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