Quality Control of Polyethylene

AN-NIR-082 Quality Control of Polypropylene Non-destructive determination of melt flow rate without rheological tests Summary As a general purpose resin, polypropylene (PP) is widely used in industries such as electronic manufacturing and construction, and is used in packaging materials due…

AN-NIR-102 Density of polyolefins measured by nearinfrared spectroscopy Simple routine analysis of polymer pellets Summary Aside from melt flow rate, density is the most important parameter to describe the properties of polyethylene (PE) materials. PE stiffness, rigidity, and heat resistance…

AN-NIR-064 Quality control of Ammonium Nitrate Rapid and non-destructive moisture determination Summary Specialty chemicals have to fulfill multiple quality requirements. One of these quality parameters, which can be found in almost all certificates of analysis and specifications, is the moisture…

AN-NIR-060 Quality Control of Polyamides Determination of viscosity, functional groups, and moisture within one minute using NIR Spectroscopy Summary Functional group and viscosity analysis (ASTM D789) of polyamides can be a lengthy and challenging process due to the sample’s limited…