نتایج جستجو برای: reversible chain transfer catalyzed polymerization

تعداد نتایج: 687415  

Journal: :Macromolecular Reaction Engineering 2023

Abstract Controlled polymerization techniques like the reversible‐addition fragmentation chain transfer (RAFT) are sensitive to impurities such as oxygen. This work explores application of re‐initiation a tool enhance monomer conversion. A kinetic model for oxygen inhibited RAFT dispersion synthesis poly(4‐vinylpyridine)‐ b ‐polystyrene (P4VP‐ ‐PS) is developed. Thus, using model, partially (mo...

Journal: :Macromolecular Chemistry and Physics 2021

The search for renewable monomers radical polymerization techniques is of current interest due to the awareness sustainability requirements in chemical sciences. Herein, synthesis and reversible addition-fragmentation chain-transfer (RAFT) a methacrylate monomer based on ricinoleic acid as sustainable starting material presented. In addition, hydroxy moiety converted an acetoacetate order allow...

Journal: :Dyes and Pigments 2021

In this work, we report a nano-fluorophore prepared by polymerization-induced self-assembly (PISA) method based on reversible addition-fragmentation chain transfer polymerization. The macromolecular agent was polyethylene glycol-based trithiocarbonate, and the monomer chalcone derivative terminated with ethylene group. reaction/assembly conducted in dioxane, where nanoparticles extremely unifor...

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...

2016
Sheng-Qi Chen Jia-Min Li Ting-Ting Pan Peng-Yun Li Wei-Dong He

Dual thermoand pH-responsive comb-type grafted hydrogels of poly(N,N-dimethy laminoethyl methacrylate) (PDMAEMA) and poly(N-isopropylacrylamide) (PNIPAM) with reversed network-graft architectures were synthesized by the combination of atom transfer radical polymerization (ATRP), reversible addition-fragmentation chain transfer (RAFT) polymerization and click chemistry. Two kinds of macro-cross-...

2017
Sivaprakash Shanmugam Jiangtao Xu Cyrille Boyer

Living organisms such as bacteria are able to grow, respond to stimuli, and divide as part of their life cycle. Designing smart three-dimensional (3D) materials that are able to perform such feats, i.e., continue on-demand growth and respond to external stimuli, is always a challenge for polymer and material scientists. At present, Johnson and co-workers have made a significant step forward in ...

2015
Jérémy Brassinne Florian D. Jochum Charles-André Fustin Jean-François Gohy

Nowadays, finely controlling the mechanical properties of polymeric materials is possible by incorporating supramolecular motifs into their architecture. In this context, the synthesis of a side-chain terpyridine-functionalized poly(2-(dimethylamino)ethyl methacrylate) is reported via reversible addition-fragmentation chain transfer polymerization. By addition of transition metal ions, concentr...

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