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发帖数: 589 | 1 Another distinguishing tool is based on the presence of single-mode or
bimodal molecular weight distributions. A block copolymer representing a
single chemical species should display essentially single-mode behavior. By
contrast, homopolymer blends are more likely to exhibit bimodal
characteristics. One of the better ways to investigate this phenomenon is
density gradient ultracentrifugation. Assuming the two components possess
different densities, a bimodal distribution will be detected in t |
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