Photoresponsive poly(methyl methacrylate)2-(polystyrene)2 miktoarm star copolymer containing an azobenzene moiety at the core

2006 ◽  
Vol 44 (4) ◽  
pp. 1396-1403 ◽  
Author(s):  
Tuba Erdogan ◽  
Eda Gungor ◽  
Hakan Durmaz ◽  
Gurkan Hizal ◽  
Umit Tunca
Keyword(s):  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
The Core ◽  
Azobenzene Moiety ◽  
Miktoarm Star ◽  
Star Copolymer

Solvent Assisted Coaxial-Electrospun Poly Methyl Methacrylate Polymer and Study of Resultant Fibers

2020 ◽  
Vol 18 (12) ◽  
pp. 905-909
Author(s):  
Arjun Satheesh ◽  
A. A. Alagiriswamy ◽  
S. Devanand ◽  
S. Nithiyanantham
Keyword(s):  
Methyl Methacrylate ◽  
Sem Analysis ◽  
Fiber Formation ◽  
Dimethyl Formamide ◽  
Poly Methyl Methacrylate ◽  
The Core ◽  
Pure Solvent ◽  
Core Solution ◽  
Polymer Dispersions

Electrospinning of dispersions with higher viscosity and limited flow may be carried out, based on the solvent assisted coaxial technique, where the flow of the core dispersion is supported by a free flowing sheath solvent. In the present work, the sheath solvents used are chloroform, toluene and dimethyl formamide and we discuss the fiber formation of Poly Methyl Methacrylate (PMMA) (dispersion-25 wt%). PMMA dispersed in chloroform is taken as the core solution and the sheath is pure solvent. The In-Situ effect of different sheath solvents in fiber formation at two different tip to collector distances are studied. The fibers formed are subjected to SEM analysis and the characteristics are analysed. The fiber formation of high viscos polymer dispersions makes the same materials subjectable to electrospinning and further applications.

Synthesis and Characterization of [Poly(3-dodecylthiophene)]2Poly(methyl methacrylate) Miktoarm Star Copolymer

2015 ◽  
Vol 48 (11) ◽  
pp. 3523-3530 ◽  
Author(s):  
Jicheol Park ◽  
Hong Chul Moon ◽  
Chungryong Choi ◽  
Jin Kon Kim
Keyword(s):  
Methyl Methacrylate ◽  
Synthesis And Characterization ◽  
Miktoarm Star ◽  
Star Copolymer

scholarly journals Well Defined Poly(Methyl Methacrylate)-Fe3O4/Poly(Vinyl Pivalate) Core–Shell Superparamagnetic Nanoparticles: Design and Evaluation of In Vitro Cytotoxicity Activity Against Cancer Cells

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2868
Author(s):  
Graciane Resende ◽  
Gabriel V. S. Dutra ◽  
Maria S. B. Neta ◽  
Olacir A. Araújo ◽  
Sacha B. Chaves ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Emulsion Polymerization ◽  
Cell Lines ◽  
Shell Structure ◽  
In Vitro Cytotoxicity ◽  
Core Shell ◽  
Seeded Emulsion Polymerization ◽  
Poly Methyl Methacrylate ◽  
The Core

The objective of this work is to develop and characterize polymeric nanoparticles with core–shell morphology through miniemulsion polymerization combined with seeded emulsion polymerization, aiming at the application in the treatment of vascular tumors via intravascular embolization. The synthesis of the core–shell nanocomposites was divided into two main steps: (i) Formation of the core structure, consisting of poly(methyl methacrylate)/magnetic oxide coated with oleic acid (OM-OA) via miniemulsion and (ii) shell structure produced through seeded emulsion polymerization of vinyl pivalate. Nanocomposites containing about 8 wt.% of OM-OA showed high colloidal stability, mean diameter of 216.8 nm, spherical morphology, saturation magnetization (Ms) of 4.65 emu·g−1 (57.41 emu·g−1 of Fe3O4), preserved superparamagnetic behavior and glass transition temperature (Tg) of 111.8 °C. TEM micrographs confirmed the obtaining of uniformly dispersed magnetic nanoparticles in the PMMA and that the core–shell structure was obtained by seeded emulsion with Ms of 1.35 emu·g−1 (56.25 emu·g−1 of Fe3O4) and Tg of 114.7 °C. In vitro cytotoxicity assays against murine tumor of melanoma (B16F10) and human Keratinocytes (HaCaT) cell lines were carried out showing that the core–shell magnetic polymeric materials (a core, consisting of poly(methyl methacrylate)/Fe3O4 and, a shell, formed by poly(vinyl pivalate)) presented high cell viabilities for both murine melanoma tumor cell lines, B16F10, and human keratinocyte cells, HaCaT.

Synthesis of AB block and A2B2 and A3B3 miktoarm star-shaped copolymers using ω-end-functionalized poly(methyl methacrylate) with a hydroxyl group prepared by organocatalyzed group transfer polymerization

2015 ◽  
Vol 6 (45) ◽  
pp. 7841-7850 ◽  
Author(s):  
Ofosu-Twum Eric ◽  
Yougen Chen ◽  
Kenji Takada ◽  
Shin-ichiro Sato ◽  
Toshifumi Satoh ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Methyl Methacrylate ◽  
Hydroxyl Group ◽  
Group Transfer ◽  
Poly Methyl Methacrylate ◽  
Metal Free ◽  
Miktoarm Star ◽  
Ab Block Copolymer

The metal-free synthesis of an AB block copolymer, and A2B2 and A3B3 type miktoarm star-shaped copolymers consisting of PMMA and PDLA arms was achieved.

Synthesis and characterization of modified poly(methyl methacrylate)/Al2O3nanocomposites as denture resins

2011 ◽  
Vol 31 (2-3) ◽  
Author(s):  
Mohammad Reza Saboktakin ◽  
Roya M. Tabatabaie ◽  
Abel Maharramov ◽  
Mohammad Ali Ramazanov
Keyword(s):  
Methyl Methacrylate ◽  
Analysis Data ◽  
Inorganic Materials ◽  
Infrared Analysis ◽  
Core Shell ◽  
Poly Methyl Methacrylate ◽  
The Core ◽  
Microscopy Image ◽  
Derived Properties

AbstractHybrid materials, which consist of organic-inorganic materials, are of profound interest owing to their unexpected synergistically derived properties. Aluminum oxide (Al2O3) nanoparticles/polymer composites have been produced using a one-system polymer synthesis. The linear polymer, poly(methyl methacrylate) (PMMA,MW=15,000 g/mol) is applied for the stabilization of Al2O3nanoparticles. Fourier transfer infrared analysis data and scanning electron microscopy image reveal that the core shell structure of the Al2O3/PMMA nanocomposite has been synthesized. The ratio of concentration of the capping polymer material to the concentration of the Al2O3precursor could control the size of Al2O3nanoparticles. With specific concentration of the reductant, the core-shell nanostructure could be fluctuated in order.

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