Synthesis of cationic nanogels through microemulsion polymerization
Download
1 / 11

synthesis of cationic nanogels through microemulsion polymerization - PowerPoint PPT Presentation


  • 409 Views
  • Uploaded on

Synthesis of Cationic Nanogels Through Microemulsion Polymerization. Tamona Williams SPGRE 2001 Research University of North Carolina Department of Chemistry. Microemulsion.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'synthesis of cationic nanogels through microemulsion polymerization' - oshin


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Synthesis of cationic nanogels through microemulsion polymerization

Synthesis of Cationic Nanogels Through Microemulsion Polymerization

Tamona Williams

SPGRE 2001 Research

University of North Carolina

Department of Chemistry


Microemulsion
Microemulsion Polymerization

A water-in-oil microemulsion is an optically transparent mixture oil, water,and surfactant. Water droplets are in a continuous oil phase stabilized by surfactant.

Continuous Oil Phase

Surfactant Molecules

Water Droplets


Microscopic appearance microemulsion polymerization
Microscopic Appearance Microemulsion Polymerization Polymerization

Surfactant

and oil phase

removed

Initiator added

in oil phase

Isolation of Particles in H2O

Microemulsion

Polymerization


Structure of monomers used in microemulsion polymerization
Structure of Monomers Used in Microemulsion Polymerization Polymerization

PEGdiacrylate

2-Hydroxylethylacrylate

2-Acryloxyethyltrimethylammonium chloride


Characterization of nanogels
Characterization of Nanogels Polymerization

Proton NMR

Transmission Electron Microscopy

Dynamic Light Scattering


Tem images of cationic nanogels
TEM Images of Cationic Nanogels: Polymerization

0% Charged Monomer

12% Charged Monomer

6% Charged Monomer

66K Magnification on Copper-Formvar Grid and Stained with PTA


Dynamic light scattering data
Dynamic Light Scattering Data Polymerization

Diameter of Nanogels by Dynamic Light Scattering


Formulation of microemulsions with charged monomer
Formulation of Microemulsions with Charged Monomer Polymerization

Objective: To form microemulsion with increased

amount of 2-acryloxyethyltrimethylammonium chloride

Increasing

Monomer Concentration



Conclusions
Conclusions Polymerization

  • Cationic nanogels were formed with a maximum of 12% charged monomer.

  • Decreasing the amount of surfactant allows the formulation of microemulsions at high percentages of charged monomer.

  • Further analysis of how surfactant controls the amount of charged monomer that will formulate a microemulsion, may aid in developing nanogels with more charge.


Acknowledgements
Acknowledgements Polymerization

SPGRE – National Science Foundation

Dr. Joeseph DeSimone

Dr. Michael Rubenstein

Karen Erford


ad