Formation and Characterization of Langmuir Silk Films

Abstract

Langmuir films were formed from regenerated (solubilized cocoons) Bombyx mori silk. Pressure/area isotherms and deposition studies indicate the formation of stable films; however, due to the molecular weight and solubility nature of silk it has been difficult to determine the area occupied by each protein polymer chain. The thin films were successfully transferred on to various solid supports for analysis. Ellipsometry data indicate a film thickness of 11.6 to 11.9 A. Infrared spectrometry (ATR) shows wavenumbers at the amide bands of 1624 (amide I), 1522 (amide II), l258 (amide III), and 700.8 (amide V), indicative of a silk II structure. TEM micrographs show pores of 300-3500 A in diameter and electron diffraction analysis indicates a polycrystalline structure.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1993
Accession Number
ADA279772

Entities

People

  • David L. Kaplan
  • Lynne A. Samuelson
  • Stephen A. Fossey
  • Wayne S. Muller

Organizations

  • United States Army Soldier Systems Center

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Chemistry
  • Diffraction
  • Diffraction Analysis
  • Electron Diffraction
  • Films
  • Langmuir Blodgett Films
  • Lepidoptera
  • Macromolecules
  • Materials
  • Materials Science
  • Mechanical Properties
  • Molecular Weight
  • Phase Transformations
  • Polymers
  • Spectra
  • Spectroscopy
  • Thin Films

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Organic Chemistry
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene