Browsing by Author "Butler, P."

Now showing items 1-6 of 6

    • Article  

      Degradable amphiphilic end-linked conetworks with aqueous degradation rates determined by polymer topology 

      Rikkou-Kalourkoti, Maria D.; Loizou, Elena; Porcar, L.; Butler, P.; Patrickios, Costas S. (2009)
      Degradable amphiphilic conetworks, based on end-linked amphiphilic ABA triblock copolymers with a labile fragment in the middle, were synthesized by sequential group transfer polymerization (GTP) of monomers and cross-linker, ...
    • Article  

      Dynamic responses in nanocomposite hydrogels 

      Loizou, Elena; Butler, P.; Porcar, L.; Schmidt, G. (2006)
      The shear response of a series of polymer-clay gels has been investigated by means of rheology and small-angle neutron scattering (SANS). The gels have the same composition by mass but different polymer molecular weights ...
    • Conference Object  

      Dynamic responses in polymer-clay gels 

      Loizou, Elena; Porcar, L.; Butler, P.; Malwitz, M.; Schmidt, G. (2005)
      The shear orientation of three polymer-clay gels has been investigated by means of small angle neutron scattering (SANS). The gels have the same polymer and clay concentrations but different polymer molecular weight. The ...
    • Article  

      Heterogeneity in nanocomposite hydrogels from poly(ethylene oxide) cross-linked with silicate nanoparticles 

      Schexnailder, P.; Loizou, Elena; Porcar, L.; Butler, P.; Schmidt, G. (2009)
      We investigate the influence of ionic strength on the structural heterogeneity and viscoelastic properties of nanocomposite hydrogels. We use small-angle scattering and rheology to monitor structural changes as a function ...
    • Article  

      Large scale structures in nanocomposite hydrogels 

      Loizou, Elena; Butler, P.; Porcar, L.; Kesselman, E.; Talmon, Y.; Dundigalla, A.; Schmidt, G. (2005)
      The physical picture of the large scale structures in nanocomposite hydrogels and some of their unique behavior were discussed. The aqueous solutions of the synthetic hectorite type clay, Laponite RD (LRD) and poly(ethylene ...
    • Article  

      Shear-induced nanometer and micrometer structural responses in nanocomposite hydrogels 

      Loizou, Elena; Porcar, L.; Schexnailder, P.; Schmidt, G.; Butler, P. (2010)
      The structural responses of a polymer-clay nanocomposite hydrogel to an imposed shear field are investigated from the nanometer to the micrometer length scales. The effects of polymer molecular weight and concentration of ...