Young's modulus of plasma-polymerized allylamine films using micromechanical cantilever sensor and laser-based surface acoustic wave techniques

Masaya Toda, Koji Miyake, Li Qiang Chu, Marjan Zakerin, Renate Förch, Rüdiger Berger, Akiko N. Itakura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Mechanical properties of ultra-thin organic films are fundamentally important in coating applications. Micromechanical cantilever sensor (MCS) and laser-based surface acoustic wave (LA-SAW) techniques were both used to measure Young's moduli (E) of plasma polymerized films at different humidities (H). For plasma polymerized allylamine (ppAA) films deposited at 5 W and 90 W, E of 1400 ± 350 MPa and 110 ± 20 MPa at H between 10 and 40%, and 1070 ± 250 MPa and 32 ± 10 MPa at H between 70 and 80% were measured. The LA-SAW technique revealed E lower than 60% of that measured by MCS. The difference suggested either an enhanced swelling at the air interface or a gradient of cross-linking density.

Original languageEnglish
Article number1800083
JournalPlasma Processes and Polymers
Volume15
Issue number9
DOIs
Publication statusPublished - 2018 Sep

Keywords

  • Young's modulus of ultra-thin films
  • cantilever sensing
  • humidity sensor
  • plasma polymerization

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Polymers and Plastics

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