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 language | English (US) |
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Pages (from-to) | 197-202 |
Number of pages | 6 |
Journal | Scanning |
Volume | 30 |
Issue number | 2 |
DOIs | |
State | Published - 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