نتایج جستجو برای: reverse iodine transfer radical polymerization ritp

تعداد نتایج: 529669  

2015
Antonio Veloso Wendy García Amaia Agirre Nicholas Ballard Fernando Ruipérez José M. Asua

Reversible Addition–Fragmentation chain Transfer (RAFT) polymerization has emerged as one of the most versatile reversible deactivation radical polymerization techniques and is capable of polymerizing a wide range of monomers under various conditions. One of the most important factors governing the success of a RAFT polymerization is the fraction of living chains at the end of the reaction, whi...

Journal: :Chemistry 2011
Mutsumi Kimura Akiko Kitao Tadashi Fukawa Hirofusa Shirai

Two novel dendritic macromonomers 7 and 8 functionalized with electroactive conjugated thiophene oligomers were synthesized by stepwise cross-coupling reactions and the introduction of a vinyl group at the focal point. Both macromonomers were polymerized into dendronized polymers 9 and 10 by using a radical polymerization method. The photophysical and redox behaviors of dendronized polymers 9 a...

Journal: :علوم و تکنولوژی پلیمر 0
لیلا احمدیان اعلم وحید حدادی اصل حسین روغنی ممقانی لیلا حاتمی مهدی سلامی کلجاهی

poly(styrene-co-butyl acrylate)/clay nanocomposites were synthesized via in situ atom transfer radical polymerization using activators generated by electron transfer in the presence of a montmorillonite ion-exchanged with mixed surfactants of dodecyl trimethyl ammonium bromide and vinyl trimethyl ammonium chloride. the living nature of polymerization is confrmed by occurrence of narrow molecula...

2018
Ravichandran H Kollarigowda Pankaj Thakur

In this work, we synthesized end group functionalization of the cis-Norbornene-5-6-endo-dicarboxylic anhydride species via the ring-opening metathesis polymerization (ROMP) of oxanorbornene derivatives generated a chiseled poly(cis-Norbornene-5-6-endo-Dicarboxylic anhydride) acrylate macromonomer. Further, acrylate oxanorbornene based macromonomer further polymerized via reversible addition fra...

2012
Mircea Grigoras

Controlled radical polymerization of N-vinylcarbazole (NVK) via microwave-assisted reversible addition-fragmentation chain transfer (RAFT) polymerization is described. As chain transfer agent, 1,3,5-benzyl tri (diethyldithiocarbamate), was used. The chain transfer agent, containing a 1.3.5-trisubstituted benzene ring as core and three dithiocarbamate functionalities attached through an intermed...

2016
Scott R. Zavada Tsatsral Battsengel Timothy F. Scott

Polymerization reactions are commonly effected by exposing monomer formulations to some initiation stimulus such as elevated temperature, light, or a chemical reactant. Increasingly, these polymerization reactions are mediated by enzymes--catalytic proteins--owing to their reaction efficiency under mild conditions as well as their environmental friendliness. The utilization of enzymes, particul...

Journal: :Chemical communications 2011
Wei Ma Hideyuki Otsuka Atsushi Takahara

Poly(methyl methacrylate) grafted imogolite clay nanotubes were fabricated via activators regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) by designing a water-soluble amphiphilic ATRP initiator that can adsorb onto imogolite surface in an aqueous solution.

Journal: :International journal of pharmaceutical research and allied sciences 2021

One of the simplest and powerful Controlled Radical Polymerization (CRP) techniques is atom transfer radical polymerization. It has been widely studied utilized since new polymeric materials synthesis using novel structures can be achieved by polymerizing many monomers under simple conditions. Polymers with low polydispersity controlled molecular weight obtained ATRP technique it synthetic flex...

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