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Polymer Bulletin

, Volume 17, Issue 5, pp 465–472 | Cite as

Phase transition in swollen gels

11. Small-angle neutron scattering from poly (N,N-diethylacrylamide) networks and solutions in the collapse region
  • J. Pleštil
  • Yu. M. Ostanevich
  • S. Borbély
  • J. Stejskal
  • M. Ilavský
Article

Summary

The temperature dependences of the small-angle neutron scattering (SANS) from solutions and networks of poly (N,N-diethylacrylamide) (PDEAAm), or from the copolymer of DEAAm and 5 mol.% sodium methacrylate (MNa) in deuterated water were measured. In the low-temperature range (T<30°C, expanded state) the SANS curves have features typical of scattering from polymer coils. At elevated temperatures (T>60°C, collapsed state) the character of SANS curves changes, indicating that in both networks and solutions compact globular structures are formed. The presence of MNa (i.e. of charges on the chains) shifts the temperature of the transition range from the expanded to the collapsed state towards higher temperature by 10–15°C.

Keywords

Sodium Polymer Phase Transition Elevated Temperature Methacrylate 
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 1987

Authors and Affiliations

  • J. Pleštil
    • 1
  • Yu. M. Ostanevich
    • 1
  • S. Borbély
    • 1
  • J. Stejskal
    • 2
  • M. Ilavský
    • 2
  1. 1.Joint Institute of Nuclear ResearchDubnaUSSR
  2. 2.Institute of Macromolecular ChemistryCzechoslovak Academy of SciencesPrague 6Czechoslovakia

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