Results 61 to 70 of about 470,273 (164)

Advances in Polymeric Insulating Materials: Global Progress in These 10 Years

High Voltage, EarlyView.
ABSTRACT This journal, High Voltage, celebrates its 10th anniversary in 2026. To commemorate this significant milestone, this comprehensive special review article showcases the latest global research progress and cutting‐edge advancements in polymeric insulating materials, a critical component that underpins high‐voltage systems and is vital to modern ...
Yoshimichi Ohki, George Chen, Davide Fabiani, Reimund Gerhard, Mona Ghassemi, Stanislaw Gubanski, Shengtao Li, Ronald Plath, Roger Schurch, Yuriy Serdyuk, Gilbert Teyssedre   +10 more
wiley   +1 more source

Übergangsmetall-Katalysatoren für die Olefinpolymerisation: 2. Herstellung von stereo-regularen Poly(1-olefinen)

CHIMIA, 1996
The insertion polymerization of propene by using chiral transition metal compounds leads to a variety of poly propene products with different stereoregularities.
Rolf Mülhaupt, Bernhard Rieger
doaj   +2 more sources

Oxidative Stability and Rheological Features in Recycled Composites Based on Postconsumer Polypropylene and Antioxidant‐Loaded Silicas

Polymer Engineering &Science, Volume 66, Issue 10, Page 7468-7482, October 2026.
Role of antioxidant supported on MCM‐41 and nano‐silica in enhancing oxidation induction time (OIT) and nucleation performance. ABSTRACT Plastic recycling efforts are hindered by the reduction of material properties in recyclates stemming from oxidative degradation of their polymeric chains.
Enrique Blázquez‐Blázquez, Kalman B. Migler, Tamara Díez‐Rodríguez, María L. Cerrada, Ernesto Pérez   +4 more
wiley   +1 more source

The effect of different prepared TiCl4-MgCl2 catalysts on the behavior of gas-phase ethylene/1-hexene copolymerization

South African Journal of Chemical Engineering, 2023
The effect of different prepared magnesium sources including MgCl2 (ZN-THF), metallic magnesium powder (ZN-O), and MGE (ZN-MGE) as the support of titanium-based Ziegler-Natta catalysts on behaviors of gas-phase ethylene/1-hexene copolymerization was ...
Thanyaporn Pongchan, Praonapa Tumawong, Wanna Phiwkliang, Sutheerawat Samingprai, Piyasan Praserthdam, Bunjerd Jongsomjit   +5 more
doaj   +1 more source

Facile Approach to Modulating Stereochemistry in Ring‐Opening Metathesis Polymerization of Cyclooctadiene

Journal of Polymer Science, Volume 64, Issue 19, Page 4037-4046, 1 October 2026.
The stereochemistry of polybutadiene made by ring‐opening metathesis polymerization (ROMP) evolves both during and after polymerization, as secondary metathesis shifts cis‐rich kinetic products toward trans‐rich equilibrium compositions. By tuning catalyst identity, additives, temperature, and reaction time, polybutadienes with 28%–80% trans content ...
Amira S. Eldin, Michael D. Schulz
wiley   +1 more source

Development of Ziegler-Natta catalysts for the synthesis of polyolefins

, 2022
reservedLo scopo di questa tesi è la visione dello sviluppo di catalizzatori Ziegler-Natta per la sintesi di olefine. Vedremo cos'è un catalizzatore e nello specifico uno di tipo Ziegler-Natta, considerando i suoi componenti, gli effetti che hanno, l ...
MARCELLAN, GIOVANNI
core  

Ziegler-Natta catalysts for propylene polymerization – Interaction of an external donor with the catalyst [PDF]

Polyolefins Journal, 2016
The interaction of the external donor (propyltrimethoxysilane - PTMS) with titanium-magnesium catalysts (TMCs) containing dibutylphthalate (DBP) as internal donor, which were prepared in different ways, was studied by chemical analysis and infrared ...
Valentina Panchenko, Ludmila Vorontsova, Vladimir Zakharov   +2 more
doaj   +1 more source

Additive Manufacturing Engineering for Electrochemistry: Conductive High‐Density Polyethylene Filament Expands the Materials Landscape

Small Science, Volume 6, Issue 10, October 2026.
Conductive high‐density poly(ethylene) (HDPE) is introduced as a new material platform for additive manufacturing electrochemistry, expanding the limited polymer feedstocks currently available. A solvent‐free thermal compounding process incorporating 40 wt% carbon black produced a flexible, plasticizer‐free filament with a low bulk resistivity of 16.4 (
Muhzamil A. Khan, Elena Bernalte, Ridho Asra, Robert S. Tapping, Ana C. M. Oliveira, Alan M. Jones, Rodrigo A. A. Muñoz, Samuel Rowley‐Neale, Robert D. Crapnell, Craig E. Banks   +9 more
wiley   +1 more source

Structure-property relations of heterophasic ethylene-propylene copolymers based on a single-site catalyst

eXPRESS Polymer Letters, 2017
The target of the present study was to investigate the structure-property relationships of heterophasic ethylenepropylene (EP) copolymers based on a single-site (metallocene) catalyst (SSC) supported with an emulsion technology developed by Borealis. The
M. Aarnio-Winterhof, P. Doshev, J. Seppala, M. Gahleitner   +3 more
doaj   +1 more source

End-to-End High-Throughput Approach for Data-Driven Internal Donor Development in Heterogeneous Ziegler-Natta Propylene Polymerization [PDF]

Internal donors (IDs) play a decisive role in shaping the structure and performance of Ziegler-Natta catalyst formulations for the isotactic polypropylene production.
Patchanee, Chammingkwan, Vincenzo, Busico, Toshiaki, Taniike, Felicia Daniela, Cannavacciuolo, Mostafa, Khoshsefat, Diego , De Canditiis, Giuseppe, Antinucci, Roberta, Cipullo   +7 more
core   +2 more sources