The classical model of continuous helix-twist lamellae versus a novel corrugate-grating assembly in accounting for long-debated issues of periodic optical banding in poly(ethylene adipate) (PEA) polymer spherulites is critically assessed, by comparing and checking against a series of scientific evidence based on experimental data of scanning electron microscopy (SEM), ultrathin microbeam small-angle & wide-angle X-ray scattering (SAXS/WAXD), and optical microscopy. Analyses show that grating-structured model fits perfectly with all results. The novel proposition of grating-structured lamellae with a crossbar pitch fits perfectly with the experimental optical band spacing, and the interior morphology dissection is fully supported by the literature-reported microbeam X-ray data.

通过比较和对照一系列因素，严格评估了连续螺旋扭曲薄片与新型波纹光栅组件的经典模型，该模型解决了聚己二酸乙二醇酯（PEA）聚合物球晶中长期争论的周期性光学带问题。基于扫描电子显微镜（SEM），超薄微束小角度和广角X射线散射（SAXS / WAXD）和光学显微镜的实验数据的科学证据。分析表明，光栅结构模型完全符合所有结果。具有横杆间距的光栅结构薄片的新主张与实验光学带间距完全吻合，并且文献报道的微束X射线数据完全支持内部形态解剖。