Direct imaging of polyethylene crystallites within block copolymer microdomains
Direct imaging of polyethylene crystallites within block copolymer microdomains
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DOI：
10.1002/1099-0488(20001001)38:19
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发表时间：
2000-10
期刊：
影响因子：
--
通讯作者：
Y. Loo;R. Register;D. Adamson
中科院分区：
文献类型：
--
作者：
Y. Loo;R. Register;D. Adamson
四氧化物（RUO4）是一种与饱和碳氢化合物聚合物形成鲜明对比的多功能药物，我们成功地进行了RUO4，以检查聚（乙二基 - 乙烯基环己烷）半胶质胶群的微域和晶体形态（tem）。在先前存在的共聚物微域中形成的聚乙烯晶体。位于每个微区域的横截面内的微晶数量。 38：2564–2570，2000
Ruthenium tetroxide (RuO4) is a versatile agent for imparting mass density contrast to saturated hydrocarbon polymers. We have successfully employed RuO4 to examine the microdomain and crystallite morphologies of poly(ethylene-block-vinylcyclohexane) semicrystalline–glassy diblock copolymers via transmission electron microscopy (TEM). Ultrathin sections cut from blocks stained with RuO4 showed excellent contrast in TEM, revealing the individual polyethylene crystallites that formed within the preexisting block copolymer microdomains. The size and orientation of the crystallites, which previously could only be inferred from scattering data, are readily apparent in the micrographs. Moreover, such imaging directly reveals the lateral extent of the crystallites and the number of crystallites lying within the cross section of each microdomain. © 2000 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 38: 2564–2570, 2000