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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 42,
  • Issue 6,
  • pp. 989-997
  • (1988)

Characterization of Solution-Cast Extracts From Biomer® by FT-IR and ESCA

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Abstract

Biomer® extracts have been cast from varying polarity solvents in an attempt to control surface composition and morphology. This polymer has previously been described as a block copolymer. FT-IR has been utilized to probe bulk and surface bonding and composition in these resulting extract cast films. FT-IR data was combined with x-ray photoelectron spectroscopic measurements to provide a detailed description of the surface composition. Results will show that a polydimethysiloxane contaminant in Biomer® can be preferentially segregated to the surface as a function of the Hildebrand parameter of the solvent that Biomer® extracts are cast from. Extracts of Biomer® as solution-cast from varying polarity solvents had many different components. This suggests that Biomer® resembles a blend of copolymerized segments with different compositions and molecular weights, with a significant number of impurities including DMS.

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