نتایج جستجو برای: reversible chain transfer catalyzed polymerization
تعداد نتایج: 687415 فیلتر نتایج به سال:
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...
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...
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...
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...
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-...
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 ...
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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