New insights into the impact toughness of ASA (acrylonitrile-styrene-acrylate) with controllable core–shell structure synthesized by three-stage seeded emulsion polymerization

2017 ◽  
Vol 22 (6) ◽  
pp. 534-544 ◽  
Author(s):  
Bo Xiang ◽  
Jun Zhang
Keyword(s):  
Impact Toughness ◽  
Emulsion Polymerization ◽  
Shell Structure ◽  
Core Shell ◽  
Seeded Emulsion Polymerization ◽  
Core Shell Structure ◽  
The Impact

In situ fabricated metal-carbide with core–shell structure for high impact-toughness iron-matrix composite

2019 ◽  
Vol 35 (14) ◽  
pp. 1727-1734
Author(s):  
Lisheng Zhong ◽  
Haiqiang Bai ◽  
Junzhe Wei ◽  
Jianlei Zhu ◽  
Jianhong Peng ◽  
...  
Keyword(s):  
Impact Toughness ◽  
Matrix Composite ◽  
Shell Structure ◽  
High Impact ◽  
Core Shell ◽  
Metal Carbide ◽  
Iron Matrix ◽  
Fabricated Metal ◽  
Core Shell Structure

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.

Preparation and adsorption behaviour of cationic nanoparticles for sugarcane fibre modification

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33554-33560 ◽  
Author(s):  
Yuanfeng Pan ◽  
Zhengdong Zhang ◽  
Yang Li ◽  
Pingxiong Cai ◽  
Zhangfa Tong ◽  
...  
Keyword(s):  
Zeta Potential ◽  
Emulsion Polymerization ◽  
Ammonium Chloride ◽  
Shell Structure ◽  
Core Shell ◽  
Trimethyl Ammonium Chloride ◽  
Adsorption Behaviour ◽  
Cationic Nanoparticles ◽  
Core Shell Structure ◽  
Fibre Modification

Cationic nanoparticles with a core–shell structure and high zeta potential were prepared by two-step semi-batch emulsion polymerization and pre-emulsification technology using the cationic emulsifier hexadecyl trimethyl ammonium chloride (CTAC).

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