A new technique combined with changes in material design is making reversible viscosity modulations possible, according to researchers from the University of Guelph in Ontario, Canada. By connecting ...

Traditional methods for measuring IV of hygroscopic polymers involve dissolving the polymer in halogenated solvents such as chlorinated phenols and comparing the flow time of the solution with that of ...

In this work, we discuss the dynamic viscoelasticity of three novolac resins with different molar masses and methylene linkage patterns (para–para′, ortho–ortho′ and ortho–para′ methylene linkages) to ...

The Mark–Houwink plot can be used to study polymer structure in solution as it clearly shows the relationship between structure and molecular weight (MW), with excellent sensitivity. The molecular ...

D. Ida and T. Yoshizaki, Polym. J., 39, 1373 (2007). J. G. Kirkwood and J. Riseman, J. Chem. Phys., 16, 565 (1948). H. Yamakawa, “Modern Theory of Polymer Solutions ...

Biotech Fluidics AB announce working with Polymer Char (Valencia, Spain), a leading manufacturer of analytical systems for the polymer industry, to incorporate an optimized DeGASi® degasser in their ...

Viscosity, or a fluid’s resistance to flow, is independent of the rate of shear or shear stress, at a given temperature, for Newtonian fluids. Non-Newtonian fluids such as polymer solutions often ...

Sound waves can measure viscosity on the fly. Though viscosity is the degree to which a fluid resists flow, it is more specifically a measure of a fluid's molecular friction. It can be a useful ...

While demand is strong for polyethylene terephthalate (PET) bottle flakes, that is not yet the case for PET flakes made from thermoformed containers. In the U.S., roughly 15 percent of PET ...