Nanoindentation of shape memory polymer networks

Wornyo, Edem; Gall, Ken; Yang, Fei; King, William P.

doi:10.1016/j.polymer.2007.03.029

Cited by 98 publications

(71 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indentation has been successfully applied to several polymers, such as poly(methyl methacrylate) [10], and polymer systems [11][12][13][14][15][16][17][18][19][20], such as blends [21], copolymers [22,23], composites [24,25], bone cement [26], and multilayer systems [27]. However, its applicability is strictly limited by the probe dimension that allows spatial resolution of the order of tens of microns and does not allow the reconstruction of an accurate mapping of the sample surface.…”

Section: Introductionmentioning

confidence: 99%

Micromechanical Characterization of Complex Polypropylene Morphologies by HarmoniX AFM

Liparoti

Sorrentino

Speranza

2017

International Journal of Polymer Science

View full text Add to dashboard Cite

This paper examines the capability of the HarmoniX Atomic Force Microscopy (AFM) technique to draw accurate and reliable micromechanical characterization of complex polymer morphologies generally found in conventional thermoplastic polymers. To that purpose, injection molded polypropylene samples, containing representative morphologies, have been characterized by HarmoniX AFM. Mapping and distributions of mechanical properties of the samples surface are determined and analyzed. Effects of sample preparation and test conditions are also analyzed. Finally, the AFM determination of surface elastic moduli has been compared with that obtained by indentation tests, finding good agreement among the results.

show abstract

Section: Introductionmentioning

confidence: 99%

Micromechanical Characterization of Complex Polypropylene Morphologies by HarmoniX AFM

Liparoti

Sorrentino

Speranza

2017

International Journal of Polymer Science

View full text Add to dashboard Cite

show abstract

“…Whereas AFM has been used to measure changes in elastic behavior of chemical cross-links in polymers [25] and thin films, [26] as well as morphological changes of reactive single crystals, [31] we are unaware of an example wherein AFM nanoindentation has been used to study mechanical properties of a SCSC transformation.…”

mentioning

confidence: 99%

Softening and Hardening of Macro‐ and Nano‐Sized Organic Cocrystals in a Single‐Crystal Transformation

Karunatilaka¹,

Bučar²,

Ditzler³

et al. 2011

Angew Chem Int Ed

View full text Add to dashboard Cite

“…Figure 2 shows the storage modulus as a function of temperature Wornyo et al ., 2007). Significant glass transition behavior is seen with three distinctive regions, namely, (i) a "glassy" region with a relatively high-modulus values of 2.5-3.5 GPa for temperature T below 60…”

Section: Resultsmentioning

confidence: 99%

Thermomechanical Formation and Recovery of Nanoindents in a Shape Memory Polymer Studied Using a Heated Tip

et al. 2007

Self Cite

View full text Add to dashboard Cite

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 degrees C. The AFM tip forms indents in the polymer in the temperature range 25-250 degrees C. The shape recovery of the indents is studied while the polymer is heated up to 100 degrees 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.

show abstract

Nanoindentation of shape memory polymer networks

Cited by 98 publications

References 54 publications

Micromechanical Characterization of Complex Polypropylene Morphologies by HarmoniX AFM

Micromechanical Characterization of Complex Polypropylene Morphologies by HarmoniX AFM

Softening and Hardening of Macro‐ and Nano‐Sized Organic Cocrystals in a Single‐Crystal Transformation

Thermomechanical Formation and Recovery of Nanoindents in a Shape Memory Polymer Studied Using a Heated Tip

Contact Info

Product

Resources

About