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Semi-batch synthesis of colloidal spheres with fluorinated cores and varying grafts of poly(ethylene glycol)

Jonsson, G. Kristin; Ulama, Jeanette; Johansson, Malin; Zackrisson, Malin LU and Bergenholtz, Johan LU (2017) In Colloid and Polymer Science 295(10). p.1983-1991
Abstract

Fluorinated spheres with grafted poly(ethylene glycol) (PEG) have been synthesized using a semi-batch emulsion polymerization in which the initiator is fed slowly to the reaction. In this way, PEG-grafted colloidal spheres can be fabricated with varying PEG chain length, different cores and varying degrees of crosslinking. The resulting batches have been characterized using disc centrifuge photosedimentometry and small-angle X-ray scattering. The size distribution is shown to be a sensitive function of the molar ratio of the reactive PEG macromonomer to fluorinated monomer, and with some optimization latices of very low polydispersity can be obtained with this simple synthesis method. For short PEG grafts too high a molar ratio results... (More)

Fluorinated spheres with grafted poly(ethylene glycol) (PEG) have been synthesized using a semi-batch emulsion polymerization in which the initiator is fed slowly to the reaction. In this way, PEG-grafted colloidal spheres can be fabricated with varying PEG chain length, different cores and varying degrees of crosslinking. The resulting batches have been characterized using disc centrifuge photosedimentometry and small-angle X-ray scattering. The size distribution is shown to be a sensitive function of the molar ratio of the reactive PEG macromonomer to fluorinated monomer, and with some optimization latices of very low polydispersity can be obtained with this simple synthesis method. For short PEG grafts too high a molar ratio results in a build up of smaller size particles and a broadening of the size distribution, whereas for longer grafts the mean particle size increases with decreasing molar ratio.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Crosslinking, Emulsion polymerization, Fluorinated colloids, Monodisperse spheres, PEG, SAXS
in
Colloid and Polymer Science
volume
295
issue
10
pages
9 pages
publisher
Springer
external identifiers
  • scopus:85028532750
  • wos:000410782500024
ISSN
0303-402X
DOI
10.1007/s00396-017-4172-z
language
English
LU publication?
yes
id
92f84bee-e3af-499a-986b-f4fa7f66aa3f
date added to LUP
2017-09-27 09:42:27
date last changed
2018-01-16 13:26:59
@article{92f84bee-e3af-499a-986b-f4fa7f66aa3f,
  abstract     = {<p>Fluorinated spheres with grafted poly(ethylene glycol) (PEG) have been synthesized using a semi-batch emulsion polymerization in which the initiator is fed slowly to the reaction. In this way, PEG-grafted colloidal spheres can be fabricated with varying PEG chain length, different cores and varying degrees of crosslinking. The resulting batches have been characterized using disc centrifuge photosedimentometry and small-angle X-ray scattering. The size distribution is shown to be a sensitive function of the molar ratio of the reactive PEG macromonomer to fluorinated monomer, and with some optimization latices of very low polydispersity can be obtained with this simple synthesis method. For short PEG grafts too high a molar ratio results in a build up of smaller size particles and a broadening of the size distribution, whereas for longer grafts the mean particle size increases with decreasing molar ratio.</p>},
  author       = {Jonsson, G. Kristin and Ulama, Jeanette and Johansson, Malin and Zackrisson, Malin and Bergenholtz, Johan},
  issn         = {0303-402X},
  keyword      = {Crosslinking,Emulsion polymerization,Fluorinated colloids,Monodisperse spheres,PEG,SAXS},
  language     = {eng},
  month        = {10},
  number       = {10},
  pages        = {1983--1991},
  publisher    = {Springer},
  series       = {Colloid and Polymer Science},
  title        = {Semi-batch synthesis of colloidal spheres with fluorinated cores and varying grafts of poly(ethylene glycol)},
  url          = {http://dx.doi.org/10.1007/s00396-017-4172-z},
  volume       = {295},
  year         = {2017},
}