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Polymers 2016, 8(4), 162;

Smart Homopolymer Microgels: Influence of the Monomer Structure on the Particle Properties

Physical and Biophysical Chemistry, Bielefeld University, 33615 Bielefeld, Germany
Author to whom correspondence should be addressed.
Academic Editor: Patrick van Rijn
Received: 17 March 2016 / Revised: 12 April 2016 / Accepted: 15 April 2016 / Published: 23 April 2016
PDF [3837 KB, uploaded 23 April 2016]


In this work, we compare the properties of smart homopolymer microgels based on N-n-propylacrylamide (NNPAM), N-isopropylacrylamide (NIPAM) and N-isopropylmethacrylamide (NIPMAM) synthesized under identical conditions. The particles are studied with respect to size, morphology, and swelling behavior using scanning electron and scanning force microscopy. In addition, light scattering techniques and fluorescent probes are employed to follow the swelling/de-swelling of the particles. Significant differences are found and discussed. Poly(N-n-propylacrylamide) (PNNPAM) microgels stand out due to their very sharp volume phase transition, whereas Poly(N-isopropylmethacrylamide) (PNIPMAM) particles are found to exhibit a more homogeneous network structure compared to the other two systems. View Full-Text
Keywords: NNPAM; NIPAM; NIPMAM; swelling behavior; microgel NNPAM; NIPAM; NIPMAM; swelling behavior; microgel

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wedel, B.; Hertle, Y.; Wrede, O.; Bookhold, J.; Hellweg, T. Smart Homopolymer Microgels: Influence of the Monomer Structure on the Particle Properties. Polymers 2016, 8, 162.

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