Results 131 to 140 of about 23,557 (277)

Atomistic simulation of olefin polymerization reaction by organometallic catalyst: significant role of microscopic structural dynamics of (pyridylamido) Hf(IV) complex in catalytic reactivity

Frontiers in Chemistry
Understanding the microscopic catalytic mechanism of the olefin polymerization reaction is crucial for the rational design of next-generation catalysts.
Kentaro Matsumoto, Nana Misawa, Shuhei Kanesato, Masataka Nagaoka, Masataka Nagaoka, Masataka Nagaoka, Masataka Nagaoka   +6 more
doaj   +1 more source

Functional polymer materials containing heavy group‐14 elements focusing on germanium and tin

Smart Molecules, EarlyView.
The synthesis, functions, and applications of the polymers containing heavy group 14 elements focusing on germanium and tin are outlined. Owing to their large atomic radii and weak binding energies, the polymers show unique properties: chromism, luminescence, carrier mobility, and reactivity to produce radials and higher coordinated states.
Masayuki Gon, Kazuo Tanaka
wiley   +1 more source

Olefin Polymerizations Oriented by Rational Designs of Group‐13 Compounds

The Chemical Record, EarlyView.
In coordination olefin polymerization chemistry, boron and aluminum compounds play important roles in both catalyst components and monomers. This personal account introduces our recent progress on the development of catalyst systems featured by the design of group‐13 counteranions, as well as the application of boronic acid‐crosslinked polyolefins to ...
Ryo Tanaka, Yu Zou
wiley   +1 more source

Polyaniline as a dual flame retardant and electrostatic dissipative additive in polyethylene nanocomposites

Journal of Vinyl and Additive Technology, Volume 31, Issue 2, Page 339-355, March 2025.
Effecft of co‐doping polyaniline with phosphoric acid and phytic acid on the heat release rate of polyethylene. Abstract Polyolefins, such as polyethylene (PE), are highly flammable and electrically insulative, limiting their applicability. The study explored the flame‐retardancy and electrical conductivity of PE/polyaniline (PE/PANI) nanocomposites ...
Akeem Adisa, Joseph K. O. Asante, Vincent O. Ojijo, António B. Mapossa, Washington Mhike   +4 more
wiley   +1 more source

Flame Retardant Polyolefins Using Fibers From Leather Waste: Adjusting Extrusion Variables to Balance the Property Profile

Journal of Vinyl and Additive Technology, EarlyView.
Adjusting extrusion variables are a key to balance the flame retardancy and mechanical properties of polyolefin/leather waste fiber composites. ABSTRACT The extrusion processing variables represent a key to the optimal use of additives and thus the development of flame‐retardant polymer composites. Adjusting the property profile, for example, finding a
Guadalupe Sanchez‐Olivares, Sven Brehme, Fausto Calderas, Bernhard Schartel   +3 more
wiley   +1 more source

Processing Stabilization of Polyolefin Recyclates Using Alditols in Combination With α‐Tocopherol: A Sustainable Alternative to Phosphites

Journal of Vinyl and Additive Technology, EarlyView.
A novel bio‐based stabilizer system significantly improves the quality of polyolefin recyclates during multiple recycling cycles. ABSTRACT This study introduces a novel bio‐based stabilizer system for polyolefin recyclates that combines alditols with small amounts of α‐tocopherol as a sustainable alternative to conventional phosphite additives. The aim
Kim Hao Ng, Jan‐Hendrik Arndt, Elke Metzsch‐Zilligen, Rudolf Pfaendner   +3 more
wiley   +1 more source

Dielectric Response of Large Band Gap Cyclic Olefines With Symmetric and Asymmetric Pendant Polar Groups

High Voltage, EarlyView.
ABSTRACT The dielectric response of two typical polyoxafluoronorbornene with asymmetric and symmetric pendant polar groups is investigated to better understand the impact of the polymer structure on dielectric properties. Based on the Dissado–Hill modelling of broadband dielectric response, the contribution of the bicyclic backbone and fluorinated ...
Qian Wang, Ying Zhou, Yanfeng Gao, Wenjin Wu, Jingyu Deng, Xidong Liang, Chao Wu   +6 more
wiley   +1 more source

Polyolefin Blends

Macromolecular Materials and Engineering, 2008
openaire   +2 more sources

Radiation‐Induced Degradation in Polymeric Materials: Alterations in Physical–Chemical Properties and Their Effects on Electrical Performance of Insulation Systems

High Voltage, EarlyView.
ABSTRACT This paper investigates the effects of radiation on polymeric materials used as insulation systems in electrical equipment such as cables for nuclear and particle accelerator applications. After a detailed description of the physics of radiation‐induced damage in the polymeric matrix, a comprehensive analysis of the physical–chemical and ...
Simone Vincenzo Suraci, Davide Fabiani
wiley   +1 more source

X-ray satellite [PDF]

The projected launch date has been delayed approx. 7 weeks from the planned launch date. The Engineering Model (EM) of the automatic measurement and control system (AMCS) is in the critical phase. The contract change no.

core   +1 more source