Application of MALDI-MSI to Monitor Surface Changes of UV Irradiated Poly(styrene) Films
-
Crecelius, Anna; Alexandrov, Theodore; Schubert, Ulrich S.
- Abstract:
- This study presents the application of matrix-assisted laser desorption/ionization mass spectrometric imaging
(MALDI-MSI) to monitor changes occurring at polymer surfaces. As an example, a poly(styrene) (PS) film was irradiated
with ultraviolet (UV) light at 254nm for different time intervals, while areas of the film were protected from
UV light by covering it with an aluminum mask. After the UV treatment, the polymer surface was analyzed by
MALDI-MSI. Time-dependent photo-induced cross-linking of the polymer film was observed, and a correlation
curve between UV radiation time and area of cross-linking was constructed. This represents the first step towards
the surface analysis of polymer components of photoresists and top coatings of cars, and it will also enable a new
characterization strategy for combinatorial material research.
- Year:
- 2011
- Type of Publication:
- Article
- Journal:
- Rapid Communications in Mass Spectrometry
- Volume:
- 25
- Pages:
- 2809 - 2814