نتایج جستجو برای: polybutadiene nanoparticles
تعداد نتایج: 107697 فیلتر نتایج به سال:
polybutadiene nanoparticles were synthesized via batch emulsion polymerization of butadiene in the presence of potassium persulfate, disproportionate rosinate potassium cation and t-dodecyl mercaptane as initiator, emulsifier and chain transfer agent, respectively. polymerization reaction was performed at different temperatures (60, 70 and 80 °c). conversion was measured at the various time int...
Polybutadiene nanoparticles were synthesized via batch emulsion polymerization of butadiene in the presence of potassium persulfate, disproportionate rosinate potassium cation and t-dodecyl mercaptane as initiator, emulsifier and chain transfer agent, respectively. Polymerization reaction was performed at different temperatures (60, 70 and 80 °C). Conversion was measured at the various time int...
Single-chain polybutadiene organometallic nanoparticles: An experimental and theoretical study Inbal Berkovich,a Sudheendran Mavila,a Olga Iliashevsky,b Sebastian Kozucha,c and N. G. Lemcoffa* a Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel b Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel c Lise Meitner Mi...
The postpolymerization modification by hydroformylation of 1,2-polybutadiene nanoparticles provides access to colloidally stable aqueous dispersions of <20 nm particles. Their polarity can be adjusted via the degree of conversion of double bonds over a broad range. Fluorescence studies illustrate the polarity of the environment experienced by pyrene as a probe molecule.
Cubic BaTiO3 particles of∼10 nm were crystallized predominantly within the hydroxylated polybutadiene matrix of a phase separated triblock copolymeric thin film of polystyrene-polybutadiene-polystyrene (Kraton D1102). The barium titanated Kraton thin film had remnants of the cylindrical morphology of a plain Kraton thin film with an interdomain spacing of ∼23 nm. The procedure of barium titanat...
Syndiotactic 1,2 polybutadiene nanoparticles (volume average diameter 13 nm) were func tionalized in aqueous dispersion by free radical mercaptan addition. By appropriate choice of both water soluble radical initiator andmercaptan concentration, nanoparticles with a degree of functionalization of up to 85% were prepared using 3 mercaptopropionic acid methyl ester and 3 mercaptopropionic acid. O...
Gold nanoparticles functionalized with amphiphilic polybutadiene-poly(ethylene glycol) (PB-PEG) V-shaped arms formed stable Langmuir monolayers at the air-water and the air-solid interfaces. At these interfaces, the binary arms vertically segregated into a dense polymer corona, which surrounded the gold nanoparticles, preventing their large-scale agglomeration and keeping individual nanoparticl...
Atriblock copolymerof polystyrene-polybutadiene-polystyrene (KratonD1102)hasbeenused topattern barium titanate precursor with nanoscale modulations. The copolymer self-assembles to yield cylindrical polystyrene nanodomains in a polybutadiene matrix. The preorganized thin films of polymer are then selectively OH-functionalized in situ on the unsaturated carbon bonds in the polybutadiene matrix w...
We present a potential theranostic delivery platform based on the amphiphilic diblock copolymer polybutadiene-block-poly (ethylene oxide) combining covalent fluorescent labeling and membrane incorporation of superparamagnetic iron oxide nanoparticles for multimodal imaging. A simple self-assembly and labeling approach to create the fluorescent and magnetic vesicles is described. Cell uptake of ...
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