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Polymer Bulletin

, Volume 58, Issue 3, pp 575–586 | Cite as

Swelling and mechanical behavior of ionized poly(acrylamide-co-N,N’-diethylacrylamide) gels in water/acetone mixtures and in water at various temperatures

  • Igor Alenichev
  • Lenka Hanyková
  • Michal IlavskýEmail author
Article

Summary

Ionized networks of random copolymers of acrylamide (AAm) and N,N’-diethylacrylamide (DEAAm) (mole ratios of xAAm/xDEAAm=1/0,0.75/0.25,0.5/0.5,0.30/70,0.15/0.85,0/1) with various amounts of ionic comonomer-sodium methacrylate (MNa) (mole ratios to all monomers xMNa=0.0,0.025,0.05) and crosslinker – N,N’-methylenbisacrylamide (MBAAm) were prepared at high dilution in water. Their swelling and mechanical behavior was investigated in water at various temperatures (from 10 to 90 °C) and in water/acetone (w/a) mixtures at room temperature. For some copolymers the transition region from expanded to collapsed state was observed at critical concentration of acetone, ac, in w/a mixtures or at critical temperature, T c , in water. It was found that with increasing content of DEAAm component in copolymers the ac values increase; the similar increase was observed with increasing xMNa. Neat PDEAAm and copolymers with the highest DEAAm content exhibit temperature transition; both increasing amount of AAm and charges bound on the chains (xMNa) in copolymers shifts the T c temperatures to higher values very efficiently (for more than 20 °C).

Keywords

Acetone Concentration Acetone Molecule Hydrogen Bonding Increase Neat Water Reduce Shear Modulus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Igor Alenichev
    • 1
  • Lenka Hanyková
    • 1
  • Michal Ilavský
    • 1
    • 2
    Email author
  1. 1.Faculty of Mathematics and PhysicsCharles University PraguePrague 8Czech Republic
  2. 2.Institute of Macromolecular ChemistryAcademy of Sciences of the Czech RepublicPrague 6Czech Republic

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