Dresden 2017 – wissenschaftliches Programm
CPP 52.8: Poster
Mittwoch, 22. März 2017, 18:30–21:00, P3
Phase transition and aggregation behaviour of an UCST-type copolymer Poly(Acrylamide-co-Acrylonitrile) in Aqueous Media — Asad Asadujjaman1, Ben Kent2, and •Annabelle Bertin1,3 — 1Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany — 2Helmholtz-Zentrum Berlin (HZB), Hanhn-Meitner-Platz 1, 14109 Berlin, Germany — 3Freie Universität Berlin, Institut für Chemie und Biochemie, Takustr. 3, 14195 Berlin, Germany
Thermoresponsive polymers have shown great potential in applications such as bioseparation, drug delivery and diagnostic.[1-2] Only few thermoresponsive polymers that present an upper critical solution temperature (UCST), i.e. phase separate from solution upon cooling, in a relevant temperature range have been reported so far. Herein, a robust UCST-type copolymer of acrylamide (AAm) and acrylonitrile (AN) (poly(AAm-co-AN)) was prepared by reversible addition fragmentation chain transfer (RAFT) polymerization and its thermo-induced aggregation behavior in aqueous media was studied.[1,2] We propose a model for the temperature-induced aggregation behaviour of UCST-type poly(AAm-co-AN) copolymer in aqueous solution on the basis of turbidity measurements, SLS, DLS, SANS and cryo-TEM.  Asadujjaman A., Kent B., Bertin A., Soft Matter, 2016, accepted.  Asadujjaman A., Bertin A., Schönhals A., Soft Matter, 2016, submitted.