نتایج جستجو برای: in situ atrp

تعداد نتایج: 16977393  

Journal: :Processes 2021

Electrochemically mediated atom transfer radical polymerization (eATRP) of styrene was studied in detail by using CuBr2/TPMA (TPMA = tris(2-pyridylmethyl)amine) as a catalyst. Redox properties various Cu(II) species were investigated CH3CN, dimethylformamide (DMF), and dimethyl sulfoxide (DMSO) both the absence presence 50% (v/v) styrene. This investigation together with preliminary eATRP exper...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان 1390

پلیمریزاسیون رادیکالی انتقال اتم(atrp) بعنوان یک روش چند جزئی از مونومر، یک آغازگر با هالوژن قابل انتقال و یک کاتالیزور ساخته شده از فلز متغیر و هر لیگاند مناسبی، تشکیل شده است. برای دست یافتن به حداقل شرایط لازم مانند آغاز سریع و غیر فعال شدن برگشت پذیر، که وابسته به واکنش اکسایش کاهش است، انتخاب لیگاند تاثیر بسزایی دارد طراحی سیستم کمپلکس فلز متغیر کاتالیزور نه تنها باعث کنترل توپولوژی، ترکیب...

Journal: :Macromolecules 2022

In this study, we compare poly(glycerol monomethacrylate) (PGMA) of different chain lengths and architectures (linear two-arm) with poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA) as an alternative polymer platform for the synthesis a new generation protein–polymer conjugates. Mono- two-arm functional atom-transfer radical polymerization (ATRP) initiators were designed selectivel...

Journal: :علوم و تکنولوژی پلیمر 0
محمد نجفی حسین روغنی ممقانی مهدی سلامی کلجاهی وحید حدادی اصل

atom transfer radical polymerization (atrp) of styrene was carried out at 105°c and a monte carlo simulation was employed to model the system. the variations of monomer conversion, the initiator concentration, average molecular weight, and molecular weight distribution were evaluated as the reaction proceeded. according to the results obtained, for similar reaction time, monomer conversion is h...

Journal: :Chemical communications 2013
Tao Gong Brian J Adzima Christopher N Bowman

A novel copper(II) complex has been developed in which the counter anion, acylphosphinate, serves as a visible light photoinitiator. This molecule is inactive in the dark but, upon visible light exposure, both CuAAC and ATRP reactions are readily and rapidly initiated.

Journal: :Chemical communications 2008
Bruno Grignard Cédric Calberg Christine Jérôme Wenxin Wang Steven Howdle Christophe Detrembleur

Synthesis of poly(2,2,2-trifluoroethyl methacrylate) by supported ATRP was investigated in supercritical carbon dioxide using a copper salt ligated to a polymeric ligand immobilised onto silica; after polymerisation, fluorinated polymers with well defined molecular weight and low polydispersity were obtained.

Journal: :Chemical Engineering Journal 2022

The scale-up of Atom Transfer Radical Polymerization (ATRP) from 15 mL to L (scale-up factor 1000) by galvanostatic simplified electrochemically mediated ATRP (seATRP) is disclosed. An electrochemical O2 scavenging cycle was embedded in the equilibrium allow self-degassing mixture and avoid impractical deoxygenation procedures. Low volume seATRP acrylamide water optimized studying various react...

Journal: :Chemical communications 2014
Benjamin J Lidster Jonathan M Behrendt Michael L Turner

Poly(p-phenylenevinylene)s (PPVs) with single reactive end groups have been prepared with high molecular weights, narrow polydispersities (ĐM) and excellent end functionality (f). PPVs functionalised with α-bromoester end groups are effective macroinitiators in the atom transfer radical polymerisation (ATRP) of methyl methacrylate (MMA).

Journal: :Chemical communications 2011
Cyrille Boyer Alexander H Soeriyadi Peter J Roth Michael R Whittaker Thomas P Davis

In this communication, we report on a new route to the functionalization of ATRP polymers exploiting their halide end-groups, which were converted successfully into reactive disulfide end-groups, using sodium methanethiosulfonate. The resultant disulfide-terminated polymers could then be reacted with different functional thiols to yield functional polymers exploiting either thiol/disulfide exch...

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