نتایج جستجو برای: controlled polymerization

تعداد نتایج: 411514  

2011
Masami Kamigaito

This review presents a short overview of recent developments in metal-catalyzed living radical polymerization, mainly focusing on our recent research studies related to the subject. Metal-catalyzed living radical polymerization or atom transfer radical polymerization, which was originally developed via evolution of the metal-catalyzed Kharasch or atom transfer radical addition to chain-growth p...

Journal: :Catalysts 2023

As a powerful protocol for the preparation of common polymers, such as polyolefins, polyesters, and polycarbonates, late-transition-metal-catalyzed polymerization can be carried out by controlling reaction conditions or developing dynamic catalytic systems that use external stimuli to influence performance active sites, resulting in well-defined polymeric materials. In particularly, under latte...

Journal: :Angewandte Chemie 2023

Abstract Traditional mechanochemically controlled reversible‐deactivation radical polymerization (RDRP) utilizes ultrasound or ball milling to regenerate activators, which induce side reactions because of the high‐energy and high‐frequency stimuli. Here, we propose a facile approach for tribochemically atom transfer (tribo‐ATRP) that relies on contact‐electro‐catalysis (CEC) between titanium ox...

Journal: :Macromolecules 2021

ABSTRACT: The effect of adding diethyl zinc as a chain transfer agent during the polymerization propylene in heptane performed at 80 °C was studied. Although it expected that the transfer would stop after precipitation polymer, the polymer molecular weight continued to increase throughout the whole polymerization. presence had an additional that polymerizations were devoid reactor fouling. To u...

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