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 ...

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 ...

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 ...

The determination of diethylene glycol content, isophthalic acid content, intrinsic viscosity (ASTM D4603), and acid number (AN) in polyethylene terephthalate (PET) is a lengthy and challenging ...

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 ...

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 ...