Jump to main content
Jump to site search

Issue 28, 2019
Previous Article Next Article

Synthesis of smart dual-responsive microgels: correlation between applied surfactants and obtained particle morphology

Author affiliations

Abstract

Thermo- and pH-responsive copolymer microgels were obtained by surfactant-assisted precipitation polymerization of N-isopropylacrylamide (NIPAM) and acrylic acid (AAc). The surfactants used were sodium dodecylsulfate (SDS), dodecyltrimethylammonium bromide (DTAB) and the nonionic n-octyl-β-D-glucopyranoside (C8G1). We investigate the influence of the surfactants on the acrylic acid incorporation rate, the particle size, particle morphology, and the swelling behaviour at pH 4 and pH 7, at which AAc is neutral or charged, respectively. It is shown that each surfactant has a specific influence, which is connected to its role in the polymerization mechanism and its charge. A combined FTIR and PCS study reveals that the particles undergo a temperature-induced change in microstructure, even if the particle hydrodynamic radius does not change significantly.

Graphical abstract: Synthesis of smart dual-responsive microgels: correlation between applied surfactants and obtained particle morphology

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Apr 2019, accepted on 20 Jun 2019 and first published on 21 Jun 2019


Article type: Paper
DOI: 10.1039/C9SM00690G
Soft Matter, 2019,15, 5673-5684

  •   Request permissions

    Synthesis of smart dual-responsive microgels: correlation between applied surfactants and obtained particle morphology

    L. Wiehemeier, T. Brändel, Y. Hannappel, T. Kottke and T. Hellweg, Soft Matter, 2019, 15, 5673
    DOI: 10.1039/C9SM00690G

Search articles by author

Spotlight

Advertisements