INVERTED KLAFTER-BLUMEN EQUATION FOR FRACTAL ANALYSIS IN PARTICLES WITH INTERPENETRATING NETWORK MORPHOLOGY


PEKCAN O.

CHEMICAL PHYSICS LETTERS, cilt.198, ss.20-24, 1992 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 198
  • Basım Tarihi: 1992
  • Doi Numarası: 10.1016/0009-2614(92)90042-l
  • Dergi Adı: CHEMICAL PHYSICS LETTERS
  • Sayfa Sayıları: ss.20-24

Özet

Fluorescence decay curves from particles composed of poly(vinyl acetate) (PVA(c)) and naphthalene (N) labelled poly(2-ethylhexyl methacrylate) (PEHMA) were fitted to the Klafter-Blumen (KB) model for energy transfer from N to anthracene. An apparent dimension of d = 2.0 was observed. The exponential series method analysis was used to "partition" the apparent dimensions to two distinct dimensions of d = 3 and d = 1.26. The Laplace-transformed KB equation for the lifetime distribution was used to interpret these dimensions in terms of a crossover in the thread-like PEHMA network in PVA(c) particles.