A novel photoreactor for the production of electrosterically stabilised colloidal particles at larger scales

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2008
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Schrinner, Marc
Haupt, Björn
Wittemann, Alexander
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Chemical Engineering Journal. 2008, 144(1), pp. 138-145. ISSN 1385-8947. Available under: doi: 10.1016/j.cej.2008.07.018
Zusammenfassung

A novel photoreactor to facilitate electrosteric stabilization of colloidal polymer particles is presented. Anionic and cationic polystyrene particles having a diameter of ca. 100 nm and bearing a thin layer of photoinitiator are used as seed colloids. Anionic and cationic chains ofweak or strong polyelectrolytes are grafted onto the surface of these particles. The polyelectrolyte chains are densely tethered onto the surface of the polymer particles. For this purpose, a commercial photoreactor setup developed for water and liquid waste treatment has been adapted. Compared to the photoreactor used earlier for photoemulsion polymerization, the new reactor largely shortens the reaction times and improves the reproducibility of the reaction. This is achieved by the higher UV power and controlled radiation times and power.

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Fachgebiet (DDC)
540 Chemie
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Colloidal particles, Polyelectrolyte brush, Polymer latex, Emulsion polymerization, Photopolymerization, Electrosteric stabilization, Suspension, Grafting from
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ISO 690SCHRINNER, Marc, Björn HAUPT, Alexander WITTEMANN, 2008. A novel photoreactor for the production of electrosterically stabilised colloidal particles at larger scales. In: Chemical Engineering Journal. 2008, 144(1), pp. 138-145. ISSN 1385-8947. Available under: doi: 10.1016/j.cej.2008.07.018
BibTex
@article{Schrinner2008novel-20193,
  year={2008},
  doi={10.1016/j.cej.2008.07.018},
  title={A novel photoreactor for the production of electrosterically stabilised colloidal particles at larger scales},
  number={1},
  volume={144},
  issn={1385-8947},
  journal={Chemical Engineering Journal},
  pages={138--145},
  author={Schrinner, Marc and Haupt, Björn and Wittemann, Alexander}
}
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