The Importance of Proper Anchoring of an Amphiphilic Dispersant for Colloidal Stability
Journal article, 2012

Highly stable poly(methyl methacrylate) (PMMA) based microcapsule suspensions without excess dispersant are obtained via the solvent evaporation route using poly(methyl methacrylate)-block-poly(sodium methacrylate) or poly(methyl methacrylate)-block-poly(sodium acrylate) diblock copolymers as dispersant. The stable suspension is characterized by a high ζ-potential that does not change with time or after washing steps. It is indirectly proven on model PMMA surfaces using quartz crystal microbalance with dissipation monitoring that the PMMA block of the copolymer is embedded in the underlying PMMA microcapsule. Such anchoring of the dispersant is key for the good colloidal stability.

Author

Markus Andersson Trojer

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

SuMo Biomaterials

Krister Holmberg

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Magnus Nydén

SuMo Biomaterials

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Langmuir

07437463 (ISSN) 15205827 (eISSN)

Vol. 28 19 4047-4050

Subject Categories

Polymer Chemistry

Physical Chemistry

Other Chemistry Topics

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Materials Science

Roots

Basic sciences

DOI

10.1021/la300112t

More information

Created

10/8/2017