Ultra‐Small‐Angle X‐Ray Scattering Study of PET/PC Nanolayers and Comparison to AFM Results
Ultra‐Small‐Angle X‐Ray Scattering Study of PET/PC Nanolayers and Comparison to AFM Results
复制标题
PET/PC 纳米层的超小角 X 射线散射研究及与 AFM 结果的比较
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
S. Roth
中科院分区：
文献类型：
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作者：
F. Ania;I. Puente;F. Calleja;D. Khariwala;A. Hiltner;E. Baer;S. Roth
利用USAXS分析了两种不互溶聚合物在层积共挤出过程中的强迫组装。散射和AFM结果的比较揭示了PET/PC薄膜中纳米层结构的许多细节。讨论了PET的体积浓度和冷结晶对实验散射的影响。在所有情况下，对应于相同重复距离的更高阶的至少两个散射最大值的出现解释了所开发的纳米结构的高规则性。最后表明，长间距值，来自AFM中的局部区域，是在一个很好的协议与USAXS值平均在更大的地区。
The forced assembly of two immiscible polymers, produced by layer-multiplying co-extrusion, is analyzed by means of USAXS. Comparison of scattering and AFM results sheds light on many details of the nanolayered structure in PET/PC films. The role played by the volume concentration and cold crystallization of PET on the experimental scattering is discussed. The appearance of at least two scattering maxima in all cases, corresponding to higher orders of the same repeating distance, accounts for the high regularity of the developed nanostructure. It is finally shown that long spacing values, derived from a localized area in AFM, are in a good agreement with the USAXS values averaged over much larger areas.