TY - JOUR
T1 - Identification of relaxation processes in the dynamic structure factor of diblock copolymers. Far from the ordering transition
AU - Fytas, G.
AU - Sigel, R.
AU - Pispas, S.
AU - Vlassopoulos, D.
AU - Hadjichristidis, Nikolaos
PY - 1999/8/1
Y1 - 1999/8/1
N2 - The dynamic structure factor S(q,t) of entangled solutions of ultra high molecular weight styrene-isoprene (SI) diblock copolymers in a common good solvent (toluene) is explored by photon correlation spectroscopy. One symmetric and two asymmetric SI samples with two and five fractionations were examined. In the disordered state, the order parameter fluctuations relax via two distinct chain relaxations (fast Rouse and slow reputation) and chain diffusion. This relaxation mechanism is S(q,t) is valid only in the homogeneous region, away from the strong fluctuations.
AB - The dynamic structure factor S(q,t) of entangled solutions of ultra high molecular weight styrene-isoprene (SI) diblock copolymers in a common good solvent (toluene) is explored by photon correlation spectroscopy. One symmetric and two asymmetric SI samples with two and five fractionations were examined. In the disordered state, the order parameter fluctuations relax via two distinct chain relaxations (fast Rouse and slow reputation) and chain diffusion. This relaxation mechanism is S(q,t) is valid only in the homogeneous region, away from the strong fluctuations.
UR - http://www.scopus.com/inward/record.url?scp=0032626265&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0032626265
SN - 0032-3934
VL - 40
SP - 1024
EP - 1025
JO - American Chemical Society, Polymer Preprints, Division of Polymer Chemistry
JF - American Chemical Society, Polymer Preprints, Division of Polymer Chemistry
IS - 2
ER -