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Prosthetic Plastic Literature Review

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blends of polypropylene and polyurethane rigidity for prosthetics[edit]

Nanophase Separation in Segmented Polyurethane Elastomers[edit]

Pukánszky, Béla, et al. “Nanophase Separation in Segmented Polyurethane Elastomers: Effect of Specific Interactions on Structure and Properties.” European Polymer Journal, vol. 44, no. 8, Aug. 2008, pp. 2431–38. ScienceDirect, doi:10.1016/j.eurpolymj.2008.06.008.

  • They are bio-compatible and can provide a functional outer coating
  • Tensile strength depends on the molecular weight
  • Adding -NCO/OH groups vary the molecular weight
  • You reach a point of excess -OH groups added
  • When you reached a peak of -OH groups added, the excess you put in the shorter the length before breakage
  • Melt viscosity relies on the length of the molecule
  • Stiffness relies on phase structure

Costello, C. R., et al. “Characterization of Heavyweight and Lightweight Polypropylene Prosthetic Mesh Explants From a Single Patient.” Surgical Innovation, vol. 14, no. 3, Sept. 2007, pp. 168–76. Crossref, doi:10.1177/1553350607306356.

  • The way the body reacts to polypropylene depends on the genetic make up of the person
  • Checking the differences between light-weight and heavy-weight polypropylene in the body
  • Could soak the material in a buffer solution (better homeostasis qualities)
  • Take into account the oxidation of the material to determine longevity