نتایج جستجو برای: free radical polymerization

تعداد نتایج: 610931  

2008
Patrick Farquet Celestino Padeste Harun H. Solak Selmiye Alkan Gürsel Günther G. Scherer Alexander Wokaun

Periodic nanostructures of poly(glycidyl methacrylate) (pGMA) were grafted onto poly(ethylenealt-tetrafluorethylene) (ETFE) films by reversible addition-fragmentation chain transfer (RAFT) polymerization. ETFE samples were first irradiated in an interference lithographic setup using EUV (extreme ultraviolet) light followed by exposure to air to introduce surface peroxide groups serving as therm...

Journal: :Drug Delivery System 2021

Journal: :KOBUNSHI RONBUNSHU 2001

Journal: :Molecules 2017
Assi Al Mousawi Patxi Garra Frédéric Dumur Thanh-Tuan Bui Fabrice Goubard Joumana Toufaily Tayssir Hamieh Bernadette Graff Didier Gigmes Jean Pierre Fouassier Jacques Lalevée

Radical chemistry is a very convenient way to produce polymer materials. Here, an application of a particular photoinduced radical chemistry is illustrated. Seven new carbazole derivatives Cd1-Cd7 are incorporated and proposed as high performance near-UV photoinitiators for both the free radical polymerization (FRP) of (meth)acrylates and the cationic polymerization (CP) of epoxides utilizing L...

Journal: :Soft matter 2015
Chetali Gupta Madeline J Sverdlove Newell R Washburn

Superplasticizers are a class of anionic polymer dispersants used to inhibit aggregation in hydraulic cement, lowering the yield stress of cement pastes to improve workability and reduce water requirements. The plant-derived biopolymer lignin is commonly used as a low-cost/low-performance plasticizer, but attempts to improve its effects on cement rheology through copolymerization with synthetic...

Journal: :International Journal of Eco-Innovation in Science and Engineering 2022

Herein, we reported the synthesis and corrosion inhibition studies of poly (N-tert- amylacrylamide-co- N-phenyl acrylamide) copolymers. The copolymers are synthesized by free radical polymerization using NTA NPAM monomers . subjected to behavior EIS PDP methods. Both methods showed same results 85.0 percentage

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...

2011
Tao Wu Zhishen Ge Shiyong Liu

Hollow polymeric nanocapsules have attracted great interest in recent years due to their broad applications in controlledrelease carriers, catalysis, nanoreactors, and encapsulation of guest molecules. Polymeric nanocapsules have been typically fabricated via the selfassembly of block copolymers, 5 polymerization within lipid vesicles, emulsion polymerization, 14 and the sacrificial core-templa...

2006
Stefan Mecking Vincent Johannes Huber Ludmila Kolb Peter Wehrmann

In general terms, submicron particles can be prepared either by disintegration of larger entities, or by synthesis from small building blocks such as atoms, ions or molecules. By comparison to disintegration techniques, the latter approach provides efficient access to particles down to the nanometer size regime; and it can allow for the controlled synthesis of particles in terms of size, size d...

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