Mechanical properties of biocompatible protein polymer thin films

Christopher J. Buchko, Margaret J. Slattery, Kenneth M. Kozloff, David C. Martin

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


A silklike protein with fibronectin functionality (SLPF) (ProNectin F®, Protein Polymer Technologies, Inc.) is a genetically engineered protein polymer containing structural and biofunctional segments. The mechanical properties and deformation mechanisms of electrostatically deposited SLPF thin films were examined by scratch testing, tensile testing, and nanoindentation. Scanning electron microscopy and scanned probe microscopy revealed that the macroscopic properties were a sensitive function of microstructure. The SLPF films were relatively brittle in tension, with typical elongation-to-break values of 3%. Nanoindentation data were fit to a power law relationship.

Original languageEnglish (US)
Pages (from-to)231-242
Number of pages12
JournalJournal of Materials Research
Issue number1
StatePublished - Jan 2000

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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