Initially DLS shows there is a small decrease in Z-average between 0 mol% and 25 mol% PBd22-PEO14 samples (131 nm, PDI 0.106 and 103 nm, PDI 0.120, respectively), and then the Z-average increases with increasing PBd22-PEO14 fraction to 141 nm (PDI 0.097) in the 100 mol% PBd22-PEO14 sample. 50 mol% PBd22-PEO14 sample had a high PDI of 0.236, suggesting that this sample was significantly more polydisperse than the other compositions.