Nanomechanical properties of solvent cast polystyrene and poly(methyl methacrylate) polymer blends and self-assembled block copolymers
نویسندگان
چکیده
The nanomechanical properties of solvent-cast polymer thin films have been investigated using PeakForceTM Quantitative Nanomechanical Mapping. The samples consisted of films of polystyrene (PS) and poly(methyl methacrylate) (PMMA) obtained after the dewetting of toluene solution on a polymeric brush layer. Additionally, we have probed the mechanical properties of poly(styrene-b-methyl methacrylate) block copolymers (BCP) as randomly oriented thin films. The probed films have a critical thickness <50 nm and present features to be resolved <42 nm. The Young’s modulus values obtained through several nanoindentation experiments present a good agreement with previous literature, suggesting that the PeakForceTM technique could be crucial for BCP investigations, e.g., as a predictor of the mechanical stability of the different phases.©2015Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.JMM.14.3.033509]
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