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Dyes as microscopic probes in polymers

 

 

 

Topography and fluorescence images of coloured polymer blends PS/PMMA. The polymers were spin coated on a glass substrate from a dyed (R6G) solution. R6G is good soluble in PMMA, but only slightly soluble in PS. With AFM techniques, a distinction between both polymers would hardly be possible, especially if the surface is totally covered by one polymer, as shown in the pictures below.

 

Topography and fluorescence images of coloured polymer blends (PS/PMMA 50/50). The polymers were spin coated on a glass substrate from a dyed (R6G) solution. R6G is good soluble in PMMA, but only slightly soluble in PS. The dewetting structures are very sensitive to the molecular weights of the polymers.

 

Topography and fluorescence images of spherolytes in polypropylene. The spherolytes were grown from solution.The dye is not soluble in the crystalline and amorphous regions of the spherolytes and is only visible in the grain boundaries.

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Copyright © 1998 Experimentelle Physik, Universität Ulm
Last modified: 30. Juli 1999