Dr. Rex Hjelm Recently Publishes Polymer Physics Work in German Rubber Technical Journal
Dr. Rex Hjelm, a leading scientist at the New Mexico Consortium, has recently published a paper in the German Rubber Technical Journal, Kautschuk, Gummi & Kunststoffe, at the request of the director of the German Institute for Rubber Technology and editor of said journal.
This publication titled Molecular-Scale Polymer Melts Response to shear in the linear and non-linear rheological Domains: Affect of molecular Weight and complex Architecture, reviews Hjelm’s work in polymer physics.
One of the most interesting and important problems in polymer science is the problem of understanding the relationship between the bulk rheological properties of entangled polymeric liquids and the polymer molecular architecture
The molecular-level response to shear of entangled polymers at interfaces and in the bulk has been of interest to understand the non-linear rheological response of polymers.
This study focuses on the molecular level response to shear strain leading non-linear rheological phenomenon, in linear and star polymers comparing the observed response to the predictions of tube theory. Hjelm and colleageus used SANS measurements of the bulk polymer response to shear in Couette geometry on melts of high molecular weight mixtures of polymers. This extended their previous results on interfacial responses with rheoNR measurements in cone-and-plate geometry.
To read more about this work see the entire publication at: