Brief History of Melt Flow Index

The Melt Flow Index (MFI) test was an inspired move for many reasons. Primarily, being a low shear rate viscosity test and holding true over many decades of polymer chain lengths, it is a very reliable representative of Average Molecular Weight (AWM). Secondly, it relieved the polymer industry of the formidable problem of making [...]

July 1st, 2016|

Brief history of control in the alpha olefin group of polymerisations

Introduction The control chemistry for most ethylene and propylene polymerisation processes as well as for many other types of polymers follows two general systems: - The control of free radical polymerisation is achieved by regulating the introduction of a Free Radical Agent (FRA) such as organic peroxide, to a reactor and so polymer chain [...]

July 1st, 2016|