| 资料简介： |
Polymer solutions forming transient networks show unique rheological properties.Specifically, most of the systems undergo shear thickening at high shear rates. The transient network systems might be divided into two categories. One is the systems
composed of polymer chains and small-sized crosslinkers, and the other is so-called associative polymer systems. Aqueous solutions of poly(vinyl alcohol) (PVA) and sodium borate belong to the former, and ydrophobic ethoxylated urethanes (HEURs)are typical of the latter, both of which show shear thickening. |