Thermomechanical formation and recovery of nanoindents in a shape memory polymer studied using a heated tip

Fuzheng Yang, Edem Wornyo, Ken Gall, William P. King

Research output: Contribution to journalArticlepeer-review

Abstract

This paper investigates the thermomechanical formation and recovery of nanometer-scale indents in a shape memory polymer (SMP), studied using a heated atomic force microscope (AFM) tip and hot-stage atomic force microscopy. The material tested is a tert-butyl acrylate (tBA)-based polymer, which has a glass transition temperature of 60°C. The AFM tip forms indents in the polymer in the temperature range 25-250°C. The shape recovery of the indents is studied while the polymer is heated up to 100°C. The temperature required for complete annealing of the indents depends upon the indentation formation conditions, with higher temperature formation corresponding to higher temperature recovery.

Original languageEnglish (US)
Pages (from-to)197-202
Number of pages6
JournalScanning
Volume30
Issue number2
DOIs
StatePublished - Mar 2008

Keywords

  • Heated atomic force microscope cantilever
  • Nanoscale indentation
  • Shape memory polymers
  • Strain storage and recovery

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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