Phase-Separation in polymer blend thin films induced by laser irradiation

Nicolaas-Alexander Gotzen, Guy Van Assche, Bruno Van Mele

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)


The present research focuses on the localized phase-separation behaviour of PS/PVME (poly(styrene)/poly(vinylmethylether) blends in thin films. PS/PVME blends show a Lower Critical Solution Temperature (LCST) behaviour. This means that, starting from a homogeneous system, they will phase-separate above a certain temperature. In thin films the air-polymer and substrate-polymer interfaces clearly influence the phase-separation behaviour, which causes a difference in the phase-separation temperature compared to the polymeric blends in bulk. This film thickness effect on the phase-separation temperature is observed for films with a thickness <1µm and is substrate dependent.
To investigate the phase behaviour upon heating and cooling in bulk (Modulated Temperature) Differential Scanning Calorimetry (MTDSC) and light scattering were used. On the other hand atomic force microscopy (AFM) and nano-thermal analysis (nano-TA) were used to investigate the phase behaviour in thin films.
Original languageEnglish
Title of host publicationProceedings of the 10th Laehnwitzseminar, June 8-13 (2008) Warnemünde, Germany
Publication statusPublished - 8 Jun 2008


  • phase separation
  • laser irradiation

Fingerprint Dive into the research topics of 'Phase-Separation in polymer blend thin films induced by laser irradiation'. Together they form a unique fingerprint.

Cite this