Most classical crystallization analyses on top surfaces of thin films could not adequately reveal the inner assembly of banded spherulites. Interior dissections by fracturing across various spherulite planes should be conducted to justify the inner lamellar assembly underneath the periodic bands. In this study, self-assembly of poly(dodecamethylene terephthalate) (P12T) into banded spherulites has been explored using powerful microscopy approaches. Results interestingly show a hierarchical ordered sequence of tangentially and radially oriented crystals into alternating polycrystalline layers. The layer width of the inner bands exactly matches with the optical inter-ring spacing (ca. 5 μm), proving emphatically that the interior lamellar assembly accurately accounts for the optical patterns of periodic rings.

中文翻译：

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聚对十二烷基对苯二甲酸乙二醇酯的周期性带状球晶的三维内部分析†

薄膜顶表面上的大多数经典结晶分析都不能充分揭示带状球晶的内部组装。应当通过在各种球晶平面上压裂来进行内部解剖，以证明周期带之下的内部层状组件是合理的。在这项研究中，已经使用强大的显微镜方法探索了聚对苯二甲酸十二烷基亚砜（P12T）自组装成带状球晶的方法。有趣的是，结果显示了切向和径向取向的晶体到交替的多晶层中的分层有序序列。内带的层宽与环间的光学间距（约5μm）完全匹配，从而证明了内部层状组件准确地反映了周期环的光学图案。