TY - JOUR
T1 - Volume recovery of polystyrene
T2 - Evolution of the characteristic relaxation time
AU - Bernazzani, P.
AU - Simon, S. L.
N1 - Funding Information:
The authors gratefully acknowledge fruitful discussions with Cornelius Moynihan, Mark Ediger and Gregory McKenna concerning this work. Partial financial support from the American Chemical Society Petroleum Research Fund 36003-AC7 is also gratefully acknowledged.
PY - 2002/9
Y1 - 2002/9
N2 - We have developed a new experimental technique that uses intermittent temperature perturbations during volume recovery in order to obtain quantitative information concerning the evolution of the characteristic relaxation time for volume during structural recovery. The experiments are analogous to the intermittent creep experiments developed by Struik. Using an automated capillary dilatometer and a polystyrene sample, the time-temperature history dependence of the characteristic relaxation time for volume was investigated. Our preliminary results show that for the set of temperature down jumps and memory experiments investigated, the characteristic relaxation time appears to depend only on the instantaneous state of the material. However, the results are not totally consistent with the Tool-Narayanaswamy model/Kovacs-Aklonis-Hutchinson-Ramos model.
AB - We have developed a new experimental technique that uses intermittent temperature perturbations during volume recovery in order to obtain quantitative information concerning the evolution of the characteristic relaxation time for volume during structural recovery. The experiments are analogous to the intermittent creep experiments developed by Struik. Using an automated capillary dilatometer and a polystyrene sample, the time-temperature history dependence of the characteristic relaxation time for volume was investigated. Our preliminary results show that for the set of temperature down jumps and memory experiments investigated, the characteristic relaxation time appears to depend only on the instantaneous state of the material. However, the results are not totally consistent with the Tool-Narayanaswamy model/Kovacs-Aklonis-Hutchinson-Ramos model.
UR - http://www.scopus.com/inward/record.url?scp=17144447673&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(02)01463-1
DO - 10.1016/S0022-3093(02)01463-1
M3 - Article
AN - SCOPUS:17144447673
VL - 307-310
SP - 470
EP - 480
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
ER -