Results 11 to 20 of about 834,750 (329)

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

Journal 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, Piyush Sanjay Patil, Simran Neeraj Budhraja, Sangamesh Gurunath Fulari, Amol Sarjerao Shirkande, Ankita Manik Mohite   +5 more
doaj   +1 more source

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

علوم 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, M. Najafi, V. Haddadi Asl   +2 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

Green 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, Deng Kai, Chen Le, Guo Chaomeng, Zhao Congshan, Cui Jiayuan, Shen Tongan, Li Kewei, Liu Jianqiao, Fu Ce   +9 more
doaj   +1 more source

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

Chemical 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, U. Rozman, D. Kučić Grgić, G. Kalčikova   +3 more
doaj   +1 more source

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

Frontiers 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, Hongwei Chen, Jiao Wang, Jiayao Li, Sitong Liu, Jianbo Tu, Yanzhen Chen, Yanping Zong, Pingping Zhang, Zhiyun Wang, Xianhua Liu   +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

Пищевые 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, N. E. Strokova, N. A. Sazhnev, A. V. Prokopenko, N. R. Kil’deeva   +4 more
doaj   +1 more source

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

Polyolefins 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, Saman Damavandi, Saeid Ahmadjo, Reza sandaroos, Mohammad Shamekhi   +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

ChemistryOpen, 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, Dr. Xiying Dai, Dr. Kui Wang, Prof. Guangyuan Zhou   +3 more
doaj   +1 more source

High porosity polyethylene aerogels [PDF]

Polyolefins Journal, 2015
Monolithic aerogels of high molecular weight polyethylene (Mw= 3x106- 6x106 g/mol) have been prepared by solvent extraction with supercritical carbon dioxide from thermoreversible gels prepared in decalin.
Christophe Daniel, Simona Longo, Gaetano Guerra   +2 more
doaj   +1 more source

A new gas discharge process for preparation of non-fouling surfaces on biomaterials [PDF]

, 1993
A non-fouling surface containing immobilized polyethylene oxide (PEO) was achieved using an argon radio-frequency glow discharge treatment (RFGD) of polyethylene films precoated with Brij hydrocarbon-PEO surfactants.
Feijen, J., Hoffman, A.S., Sheu, M.-S., Terlingen, J.G.A.   +3 more
core   +2 more sources