The 3D structure of real polymer foams
The 3D structure of real polymer foams
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DOI：
10.1016/j.jcis.2004.07.032
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发表时间：
2004-12-01
影响因子：
9.9
通讯作者：
Macosko, CW
中科院分区：
文献类型：
--
作者：
Montminy, MD;Tannenbaum, AR;Macosko, CW
聚合物泡沫的复杂结构可以使用3D成像技术如MRI或X射线断层扫描，然后进行图像处理来检查。使用一种新的3D图像处理技术，分析了聚氨酯泡沫的六个图像，以创建样品的计算机3D模型。在这些模型上进行的测量得到了许多微观结构特征的分布，包括支柱长度和窗口以及单元形状分布。在六个聚氨酯泡沫样品中检测和测量了近8000个支柱、4000个窗口和376个单元。当与以前的理论和研究相比，这些测量表明，真实的聚合物泡沫的结构显着不同的平衡模型和含水泡沫。例如，先前对水性泡沫的研究表明，约70%的泡沫窗是五边形。在这里研究的聚合物样品中，只有55%的窗户是五边形的。(C)2004爱思唯尔公司All rights reserved.
The intricate structure of polymeric foams may be examined using 3D imaging techniques such as MRI or X-ray tomography followed by image processing. Using a new 3D image processing technique, six images of polyurethane foams were analyzed to create computerized 3D models of the samples. Measurement,, on these models yielded distributions of many microstructural features, including strut length and window and cell shape distributions. Nearly 8000 struts, 4000 windows, and 376 cells were detected and measured in six polyurethane foam samples. When compared against previous theories and studies, these measurements showed that the structure of real polymeric foams differs significantly from both equilibrium models and aqueous foams. For example, previous studies of aqueous foams showed that about 70% of foam windows were pentagons. In the polymeric sample studied here, only 55% of windows were pentagonal. (C) 2004 Elsevier Inc. All rights reserved.