Binder and Interphase Microstructure in a Composite Material Characterized by Scanning Electron Microscopy and NMR Spin Diffusion Experiments,Macromolecular Chemistry and Physics

当前位置： X-MOL 学术 › Macromol. Chem. Phys. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Binder and Interphase Microstructure in a Composite Material Characterized by Scanning Electron Microscopy and NMR Spin Diffusion Experiments
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2019-12-08 , DOI: 10.1002/macp.201900310
Silène Parisse ₁ , Jean‐Fabien Petit ₁ , Alexandre Forzy ₁ , Alexandre Lecardeur ₁ , Sandrine Beaugrand ₁ , Pascal Palmas ₁

Affiliation

¹H NMR spin diffusion is shown to advantageously complement scanning electron microscopy (SEM) observations for the characterization of polymer structuring in composite materials. It is here demonstrated on a material containing a few percent of polymer binder and a crystalline organic/inorganic mixture as reinforcement. In SEM observations, polymer accumulations are seen. However, the polymer is also expected to fill small porosities and thin layers at the interface of particles to ensure the cohesion and the mechanical properties of the assembly. In most cases, this polymer structuring is invisible considering the resolution and contrast achieved by SEM on such material. It is thus investigated taking advantage of the two‐step decay of nuclear magnetic resonance spin diffusion curves. Average thickness values of 30 and 188 nm are estimated for the interphase and the overall polymer, respectively. Such structural information improves the knowledge of structure/property relationships and provides better understanding of material properties and making processes.

中文翻译：

扫描电镜和NMR自旋扩散实验表征复合材料中的粘结剂和相间显微组织

^1个已显示1 H NMR自旋扩散有利于补充扫描电子显微镜（SEM）观察，以表征复合材料中的聚合物结构。在包含少量聚合物粘合剂和结晶有机/无机混合物作为增强材料的材料上进行了证明。在SEM观察中，看到聚合物积累。然而，还期望聚合物在颗粒的界面处填充小孔隙和薄层，以确保组件的内聚性和机械性能。在大多数情况下，考虑到SEM在此类材料上获得的分辨率和对比度，这种聚合物结构是不可见的。因此，利用核磁共振自旋扩散曲线的两步衰减对其进行了研究。估计相间和整个聚合物的平均厚度分别为30和188 nm。这样的结构信息提高了结构/属性关系的知识，并提供了对材料特性和制造过程的更好理解。

更新日期：2019-12-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11