Estimation of the Generation and the Weight Fraction of Dense Polymer Regions in Heterogeneous Hydrogels

Alveroglu E. , YILMAZ Y.

MACROMOLECULAR CHEMISTRY AND PHYSICS, cilt.212, sa.14, ss.1451-1459, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 212 Konu: 14
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1002/macp.201100161
  • Sayfa Sayıları: ss.1451-1459


The internal structure of polyacrylamide gels consists of polymer-dense regions with different densities, which are denoted as "blobs". The density difference between these blobs decreases when a gel is doped with charged molecules. When a small potential is applied between the ends of such a gel, ionic charge carriers result in a current. A theoretical approach is developed to estimate the weight fraction and the number of blob generation. The current decreases with time as a series of exponentially decreasing terms where the exponent and the multiplier of each term measure the density of the blob and the weight fraction of the corresponding blob generation.