نتایج جستجو برای: atom transfer radical polymerization

تعداد نتایج: 447854  

Journal: :Macromolecular Chemistry and Physics 2023

Front Cover: In article 2200259 by Katja Loos and Aldo Altomare, the light-catalyzed atom transfer radical polymerization (ATRP) of PVDF-based block copolymers with methyl methacrylate using five different organic photoredox catalysts (OPRC) is reported. The authors prove how three OPRC operating through an oxidative quenching pathway offer a good control over process. They also achieve success...

2006
Xiaowu Fan Lijun Lin Phillip B. Messersmith

Polymer nanocomposites of core–shell structure were prepared by grafting poly(methyl methacrylate) (PMMA) from TiO2 nanoparticle via the surface-initiated polymerization (SIP) strategy. A bifunctional polymerization initiator inspired by L-3,4-dihydroxyphenylalanine (DOPA), a key constituent of mussel adhesive proteins (MAPs), was designed and synthesized for use in SIP from oxide surfaces. The...

Journal: :علوم و تکنولوژی پلیمر 0
لیلا حاتمی وحید حدادی اصل حسین روغنی ممقانی لیلا احمدیان علم مهدی سلامی کلجاهی دانشگاه صنعتی امیرکبیر

w       ater born poly(styrene-butyl acrylate)/clay nanocomposite latexes were synthesized by a novel initiating system of activators generated by   electron transfer (aget) in a system of atom transfer radical polymerization   (atrp). initially, the clay was swelled in a mixture of styrene, butyl acrylate,   and hexadecane. the mixture was then sonicated to obtain a stable miniemulsion. to   s...

2016
Zhicheng Huang Jing Chen Lifen Zhang Zhenping Cheng Xiulin Zhu Nicolay V. Tsarevsky

It is well known that well-defined polyacrylonitrile (PAN) with high molecular weight (Mw > 106 g ̈mol ́1) is an excellent precursor for high performance carbon fiber. In this work, a strategy for initiators for a continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) system for acrylonitrile (AN) was firstly established by using CuCl2 ̈ 2H2O as the catalyst and 2,21-az...

Journal: :Journal of colloid and interface science 2009
Jem-Kun Chen Chih-Yi Hsieh Chih-Feng Huang Po-min Li

In this paper we describe a graft polymerization/solvent immersion method for generating various patterns of polymer brushes. We used a very-large-scale integration (VLSI) process and oxygen plasma system to generate well-defined patterns of polymerized methyl methacrylate (MMA) on patterned Si(100) surfaces through atom transfer radical polymerization (ATRP). After immersion of wafers presenti...

2014
Marcelo Aparecido Chinelatto José Augusto Marcondes Agnelli Sebastião Vicente Canevarolo

New copolymers from hindered amines and vinyl monomers were synthesized by radical chain polymerization. To obtain polymeric HALS, acrylamide-(1ATP) and acrylate-(4ATP) monomers, derivatives from 2,2,6,6-tetramethylpiperidine and 2,2,6,6-tetramethyl-4-piperidinol were synthesized. The radical chain polymerization of 1ATP with styrene (Sty) using 1-butanethiol (BTN) resulted in a copolymer with ...

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