Deformation and relaxation of grafted polymer layers at elevated temperatures

作者：Schneider Konrad^*; Nitsche David; Stamm Manfred

来源：Colloid and Polymer Science, 2015, 293(6): 1593-1605.

DOI：10.1007/s00396-015-3549-0

• Polymer layers
• Relaxation
• Master curves
• Scanning force microscopy

The mechanical deformation and relaxation behaviour of thin-grafted polymer layers is investigated by a scanning force microscope (SFM) in contact mode. The layers were considerably plastically deformed at different temperatures. By scratching across the surface, a ripple structure is created. The temperature- and time-dependent relaxation of the ripple structure is followed directly by SFM and discussed in comparison to classical viscoelastic relaxation behaviour and time-temperature superposition of bulk material. In contrast to classical viscoelastic behaviour, here, the strong plastic deformation of the grafted layers accelerates the relaxation behaviour.

• 出版日期2015-6