Results in prior sections establish that the amorphous versus crystalline character or chain tacticity can impact the hydrophobicity of polymer surfaces. Fig. examines how the various metrics of nanoscale hydrophobicity are impacted by crystallinity (for PE, PVC, and N66) or tacticity (for PVA). With the exception of PE * , we find that more well-ordered systems (i.e., Figure : The impact of polymer morphology and monomer stereochemistry on nanoscale hydrophobicity. Data is grouped by polymer with the height of each bar reflecting the difference in a hydrophobicity metric with respect to the amorphous system. Data is transformed such that positive values can be interpreted as relative increases in hydrophobicity. For direct comparison to PE * , the label 'PE • ' denotes results for a "frozen" or fixed amorphous PE surface. 'NC' denotes 'not calculated.' crystalline or isotactic) are consistently reported as more hydrophobic than their disordered counterparts (i.e., amorphous or atactic).