Analysis of copolymer levels in polymer pellets by near-infrared spectroscopy

Application Bulletin 414 Analysis of polymers using near-infrared spectroscopy Branch Plastics and polymers Keywords Near-infrared spectroscopy, polymer, monomer, polymerization, polypropylene, polyethylene, PET, polyuethane, polystyrene, resin, polyols, polyesters, polyolefin, hydroxyl number, hydroxyl value, acid value, density, melt flow index, melt flow…

Near-Infrared Spectroscopy Application Note NIR–4 Determination of additives in polymer pellets by near-infrared spectroscopy This Application note shows that NIR spectroscopy is an excellent tool for determining low levels of additives in finished polypropylene pellets. This is demonstrated by monitoring…

Near-Infrared Spectroscopy Application Note NIR–6 Near-infrared analysis of polyols This Application Note describes a fast, nondestructive, and reliable NIRS method for the determination of the hydroxyl number in polyols. Results are available in real-time, for which reason NIRS is highly…

Near-Infrared Spectroscopy Application Note NIR–7 Near-infrared analysis of polyols: process monitoring in a hostile environment During polymerization, real-time determination of hydroxyl and acid numbers of polyols provide important information about the molecular weight and the reaction end point. This Application…