Analysis of PTMG250 and MIA250 by Liquid Chromatography-Mass Spectrometry

Polytetramethyleneglycol (PTMG250) and maleinimide (MIA250) chemicals were separated, identified and semiquantitatively analyzed by high performance liquid chromatography-electrospray ionization mass spectrometry (HPLC-ESI/MS). The results showed that PTMG250 was made up of three main polymeric compounds(polymerization degree were 2,3,4), possessing 22.78%, 20.26%, 22.21% respectively, and MIA250 was composed of three main ingredients (2+2,3+2,4+2) which content were 17.92%, 32.53%, 20.12%, respectively. This provides technical index for evaluating the properties of PTMEG250 and MIA250, and gives references for synthesis of these types of PTMEG250 and MIA250.