Results 1 to 10 of about 679 (182)

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

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   +2 more sources

Preparation of High-Performance Polyethylene Nanocomposites with Oleic Acid–Siloxene-Supported Ziegler–Natta Catalysts [PDF]

open access: yesMolecules
The addition of two-dimensional inorganic nanomaterials can effectively enhance the properties of polyethylene (PE). In the present study, a series of high-performance PE/oleic acid (OA)–siloxene nanocomposites were prepared by in situ polymerization ...
Huan Yue   +6 more
doaj   +2 more sources

Effects of various poisoning compounds on the activity and stereospecificity of heterogeneous Ziegler–Natta catalyst [PDF]

open access: yesScience and Technology of Advanced Materials, 2008
A TiCl4/ethylbenzoate/MgCl2 Ziegler–Natta catalyst was pretreated with chemically different poisoning compounds to investigate their effects on the catalyst activity and stereospecificity for propylene polymerization.
Kitti Tangjituabun et al
doaj   +2 more sources

Immobilizing metallocene by solid polymethylaluminoxane “sMAO” for slurry-phase ethylene-1-hexene copolymerization [PDF]

open access: yesMATEC Web of Conferences, 2022
In the field of olefin catalytic polymerization, metallocene catalysts show higher activity than traditional Ziegler-Natta catalysts. In this study, benzoic acid catalyzed the controlled hydrolysis of trimethylaluminum (TMA) to methylaluminoxane (MAO ...
Wu Chaofan   +5 more
doaj   +1 more source

Synthesis of Isotactic Polybutene-1 with Ziegler-Natta Catalyst [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2022
Hypothesis: Butene-1 is in excess in the polyolefin plants of Iran. Considering the properties of isotactic polybutene-1, including high creep and environmental stress cracking resistances, excellent elastic reversibility and good chemical abrasion ...
shokoufeh Hakim   +2 more
doaj   +1 more source

Imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalysts for ethylene polymerization and ethylene/1-hexene copolymerization [PDF]

open access: yesPolyolefins Journal, 2016
A novel imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalyst for ethylene and ethylene/1-hexene polymerization is investigated. The catalyst is prepared by modification of (SiO2/MgO/MgCl2)TiClx Ziegler-Natta catalysts via supporting vanadium ...
Ting Fu   +5 more
doaj   +1 more source

Dataset of energetically accessible structures of MgCl2/TiCl4 clusters for Ziegler-Natta catalysts

open access: yesData in Brief, 2021
This data article provides a dataset of the energetically accessible structures including the most stable structures of xMgCl2/yTiCl4 nanoplates (x = 6–19, y = 0–4).
Gentoku Takasao   +5 more
doaj   +1 more source

The Use of Electron Donors to Increase Stereospecificity in Ziegler-Natta Propylene Polymerization [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2016
Different chemical components in traditional Ziegler–Natta catalytic system include: (1) titanium and vanadium containing compounds, mostly TiCl4, as an active centre, (2) trialkylaluminium-based Lewis acid compounds, especially triethylaluminium, as ...
Farshid Nouri-Ahangarani   +2 more
doaj   +1 more source

Determination of kinetic parameters for ethylene polymerization (with and without hydrogen) by Ziegler-Natta catalyst. [PDF]

open access: yesPolyolefins Journal, 2020
In this study, slurry polymerization kinetics of ethylene with TiCl4/Mg(OEt)2/AlR3 Ziegler-Natta catalysts in various conditions using the model of sum square error (SSE) (method I) and model of least square error (LSE) (Method II) was investigated.
Seyed Mehdi Ghafelebashi Zaranda   +1 more
doaj   +1 more source

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