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Related Experiment Videos

Compositional analysis of Biomer.

J Belisle1, S K Maier, J A Tucker

  • 13M Company, 3M Center, Corporate Research-Analytical, St. Paul, Minnesota 55144.

Journal of Biomedical Materials Research
|December 1, 1990
PubMed
Summary

This study details the chemical composition of Biomer, a polyurethane. New components like diethylamine and a methacrylate additive were identified using advanced chromatography techniques.

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Analytical Chemistry

Background:

  • Biomer is a segmented polyether polyurethane with established components.
  • Understanding the full composition is crucial for material characterization and application.

Purpose of the Study:

  • To comprehensively analyze the chemical composition of Biomer.
  • To identify previously unreported components and additives within Biomer.

Main Methods:

  • Hydrolysis and gas chromatography were employed for detailed compositional analysis.
  • Gel permeation chromatography (GPC) was used to determine the molecular weight of the methacrylate additive.
  • X-ray photoelectron spectroscopy (XPS) and Time-of-Flight Secondary Ion Mass Spectrometry (SIMS) were utilized for surface analysis.

Main Results:

  • Identified diethylamine, 1,3-diaminocyclohexane, and a novel methacrylate additive (poly(diisopropylaminoethyl methacrylate-co-decyl methacrylate)) in Biomer.
  • Quantified antioxidants Santowhite Powder and BHT.
  • Confirmed absence of silicone and chloride on the Biomer surface (<0.03% chloride).
  • GPC provided molecular weight characterization of the methacrylate additive.

Conclusions:

  • Biomer's composition is more complex than previously reported, including specific additives and impurities.
  • The analytical methods employed successfully identified and characterized novel components.
  • Surface analysis confirmed the absence of silicone and chloride, while indicating the presence of the methacrylate additive.

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