Analytical Instrument Documents

JEOL Resources

rss

Documentation in support of your JEOL product.

Degradation of PET by UV irradiation using S3000 - MSTips 307

Matrix assisted laser desorption/ionization (MALDI) mass spectrometry is a powerful tool for the analysis of synthetic polymers. This technique, when combined with a high-resolution time-of-flight mass spectrometer, can be used to identify differences in monomer, polymer end groups, and their molecular weight distributions. The molecular weight distribution is often expressed as number average molecular weight (Mn), weight average molecular weight (Mw), and dispersity (D). More recently, MALDI mass spectrometry imaging (MALDI-MSI) has been used to visualize the locations of compounds on sample surfaces. However, this technique has not been widely used for polymer analysis. Previously in MSTips 306, we reported combining Mn, Mw and D visualization methods with Kendrick mass defect (KMD) analysis. In this report, we have applied this combined method to analyze a polyethylene terephthalate (PET) that was degraded by ultraviolet (UV) irradiation.

Attached Files
Showing 0 Comment


Comments are closed.

Other Resources

Image Gallery
  • View a selection of NMR and MS spectra
  • Walkup NMR
  • See how the Delta NMR software allows users to just "walk up" and start NMR experiments
  • Mass Spec Reference Data
  • View our page of useful molecular references for Mass Spec
  • Tutorials (Mass Spec)
  • Documents on the basics of mass spectrometry
  • Delta NMR software Tutorials
  • Videos on how to use the Delta NMR software
  • No-D NMR
  • Description of No-D NMR and how it can be used to eliminate the need for deuterated solvents
  • Non Uniform Sampling (NUS)
  • Description of how NUS is used to greatly reduce the time needed for running NMR experiments
  • NMR Basics
  • Overview of the Basics of NMR Theory
  • NMR Magnet Destruction
  • See our presentation of the slicing open of a JEOL Delta-GSX 270 MHz NMR Magnet
  • Media

    Corona - Glow Discharge (DART Ion Source)

    January 28, 2022
    2637
      JEOL USA, Inc.
      11 Dearborn Road
      Peabody, MA 01960
      © Copyright 2022 by JEOL USA, Inc.
      Terms of Use
      |
      Privacy Policy
      |
      Cookie Preferences