| 资料简介： |
stress relaxation behavi after a large step strain is repted f a polyisoprene comb with lightly entangled arms. the linear viscoelastic behavi of the comb is fit with the theetical model of kapnistos et al[l] using acteristic values f the given chemistry p =1/12. using time-temperature superposition, stress relaxation curves are repted that span the complete relaxation behavi of the comb, from branch to long time backbone behavi. |