Encapsulation of magnetite in polymer particles via the miniemulsion polymerization process

2001 ◽  
Vol 37 (3) ◽  
pp. 217-221 ◽  
Keyword(s):  
Miniemulsion Polymerization ◽  
Polymerization Process ◽  
Polymer Particles

Fluorescent polymer particles by emulsion and miniemulsion polymerization

2003 ◽  
Vol 41 (6) ◽  
pp. 766-778 ◽  
Author(s):  
Fr�d�ric Tronc ◽  
Mei Li ◽  
Jianping Lu ◽  
Mitchell A. Winnik ◽  
Bansi Lal Kaul ◽  
...  
Keyword(s):  
Miniemulsion Polymerization ◽  
Polymer Particles ◽  
Fluorescent Polymer

Preparation of Polyurethane/Acrylic Hybrid Nanoparticles via a Miniemulsion Polymerization Process

2005 ◽  
Vol 38 (10) ◽  
pp. 4183-4192 ◽  
Author(s):  
Mei Li ◽  
Eric S. Daniels ◽  
Victoria Dimonie ◽  
E. David Sudol ◽  
Mohamed S. El-Aasser
Keyword(s):  
Miniemulsion Polymerization ◽  
Hybrid Nanoparticles ◽  
Polymerization Process

scholarly journals The synthesis of molecular recognition polymer particles via miniemulsion polymerization

2018 ◽  
Vol 126 ◽  
pp. 1-8 ◽  
Author(s):  
Zehu Wang ◽  
Teng Qiu ◽  
Longhai Guo ◽  
Jun Ye ◽  
Lifan He ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Miniemulsion Polymerization ◽  
Polymer Particles

scholarly journals Hybrid Latex Particles: Preparation with Miniemulsion Polymerization

2018 ◽  
Vol 149 ◽  
pp. 01035 ◽  
Author(s):  
F. Bouanani
Keyword(s):  
Miniemulsion Polymerization ◽  
Melt Processing ◽  
Montmorillonite Clay ◽  
Polymerization Process ◽  
Surfactant Mixture ◽  
Clay Particles ◽  
Transmission Electron ◽  
Nonionic Surfactant Mixture ◽  
Polymerization Method ◽  
Hybrid Latex

This research developed a novel poly(trifluoropropylmethylsiloxane) (PTMS)/montmorillonite nanoparticles, for technologic applications. PTMS /MMT nanoparticles were prepared by the miniemulsion polymerization method. Montmorillonite clay was encapsulated within a fluorinated cyclosiloxane (1,3,5-tris(trifluoropropylmethyl)cyclotrisiloxane) to give stable water based nanocomposite latex, using miniemulsion polymerization technique. The resulting composite latex was characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS) and RX diffraction. The particles stability was investigated by sedimentation and surface tension measurements. An efficient cationic/nonionic surfactant mixture was used in order to achieve the best compatibility with the monomer. TEM and RX data revealed the partial embedding of montmorillonite in the spherical polymer based nanoparticles. According to DLS measurements, the encapsulated clay particles conserve their size throughout the polymerization process. The melt processing of poly(trifluoropropylmethylsiloxane) matrix to encapsulate the montmorillonite clay was also carried out for comparison purposes.

Antimicrobial Activity of the Sodium Lauryl Sulphate Used as Surfactant in the Polymeric Encapsulation Processes

2020 ◽  
Vol 1012 ◽  
pp. 500-505
Author(s):  
Pâmela Fagundes ◽  
Thaís Karoline Carniel ◽  
Lais Regina Mazon ◽  
Josiane Maria Muneron de Mello ◽  
Lucinao Luiz Silva ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Miniemulsion Polymerization ◽  
Sodium Lauryl Sulphate ◽  
Polymerization Process ◽  
Residual Concentration ◽  
Solid Media ◽  
The Many ◽  
Polymeric Encapsulation

Miniemulsion polymerization process is a very versatile technique used for the polymeric encapsulation of the many essential oils. In this process some surfactant compounds are used to define the capsules characteristics, as an example the Sodium Lauryl Sulphate (SLS) that is one of the most used surfactants. But, after the miniemulsion polymerization synthesis the residual amount of SLS can manifest an antimicrobial action that can improve or to prejudice the final properties of the encapsulated products, depending of its percentual concentrations. In this sense, the objective of this work was to evaluate the antimicrobial activity of polycaprolactone (PCL) capsules synthesized with different residual concentrations of the SLS surfactant after the miniemulsion polymerization processes. The antimicrobial evaluations demonstrated from solid media diffusion test that the PCL microcapsules are microbiologically inactive for the bacteria Staphylococcus aureus and Escherichia coli when are synthetized with residual concentrations of SLS below 0.0125%. The minimum inhibitory concentration (MIC) of residual SLS for the bacteria Staphylococcus aureus is 0.0146% and for the bacteria Escherichia coli the complete bacterial inhibition not was detected at the maximum residual concentration studied of 0.1167%.

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