TY - JOUR
T1 - Influence of tip indentation depth on the adhesive behavior of viscoelastic polydimethylsiloxane networks studied by atomic force microscopy
AU - Viville, Pascal
AU - Deffieux, Alain
AU - Schappacher, Michel
AU - Leclère, Philippe
AU - Brédas, Jean Luc
AU - Lazzaroni, Roberto
PY - 2001
Y1 - 2001
N2 - A commercial atomic force microscope (AFM) outfitted with a custom control and data acquisition system was used to investigate the adhesive nature of a viscoelastic polydimethylsiloxane (PDMS) network. Due to the complex dependence of the adhesion of this sample on factors such as indentation, surface dwell time, applied stress and sample memory effects, total control of the applied stress profile between the AFM tip and sample was necessary. Since the force curves were analyzed automatically on-line, large amounts of data could be rapidly collected, alleviating the time-consuming task of off-line analysis. The adhesive response is shown to increase with increasing interaction time and the maximum applied load. The results are rationalized by considering the time-dependent stress relaxation behavior of the PDMS network as it is deformed by the AFM tip.
AB - A commercial atomic force microscope (AFM) outfitted with a custom control and data acquisition system was used to investigate the adhesive nature of a viscoelastic polydimethylsiloxane (PDMS) network. Due to the complex dependence of the adhesion of this sample on factors such as indentation, surface dwell time, applied stress and sample memory effects, total control of the applied stress profile between the AFM tip and sample was necessary. Since the force curves were analyzed automatically on-line, large amounts of data could be rapidly collected, alleviating the time-consuming task of off-line analysis. The adhesive response is shown to increase with increasing interaction time and the maximum applied load. The results are rationalized by considering the time-dependent stress relaxation behavior of the PDMS network as it is deformed by the AFM tip.
UR - http://www.scopus.com/inward/record.url?scp=0035015640&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035015640&partnerID=8YFLogxK
U2 - 10.1002/1521-3900(200103)167:1<189::AID-MASY189>3.0.CO;2-2
DO - 10.1002/1521-3900(200103)167:1<189::AID-MASY189>3.0.CO;2-2
M3 - Article
AN - SCOPUS:0035015640
SN - 1022-1360
VL - 167
SP - 189
EP - 199
JO - Macromolecular Symposia
JF - Macromolecular Symposia
ER -