Analysis of Polymeric UV Absorber (Tinuvin 213) Using LDI-TOFMS: Solvent Effect in Sample Preparation

The purpose of the present work is to examine whether change in solvent which used for sample preparation can affect the measurement of the average molecular weights of polymer and a role of UVAs as matrix. UV absorption spectrum of 50 ppm Tinuvin 213 in acetone was measured using UV-visible spectrometer to examine degree of the N₂ laser radiation (337 nm). Since the UVAs of Tinuvin 213 absorb UV wavelength between 295 and 400 nm, the two UVAs and PEG can be ionized without matrix by absorption of the laser radiation. The range of applications of polymeric materials is extending at an amazing rate and the number of additives available to modify polymer properties is increasing proportionately. These additives include antioxidants, UV stabilizers, lubricants, and so on. Polymeric materials undergo degradation when they are exposed to the ultraviolet (UV) radiation in sunlight. This degradation process results in a change in the appearance and reduction of the physical properties