Probing the Polymer/Solid Interface and Interphase in Mesostructured 2D-Carbon Nanotube/Polymer Composites: A Combined Study of Experiment and Theory.

在我们的项目中，我们的目标是在我们三个小组之间采取协调一致的实验和理论方法，以了解聚合物与碳纳米管（CNT）的相互作用。我们使用高度有序的二维CNT结构作为固体和单相聚合物。这种材料与单一聚合物的相互作用，如氘代聚苯乙烯和PMMA（正在进行的工作和在第一个项目期间完成的工作），以及与聚乙烯（对亚二甲苯基），PPX，（下一项目期间的新工作）将通过实验和理论手段进行研究，以便更深入地了解决定这种CNT/聚合物杂化物。对于CNT的合成和排列，我们建立的基于模板的方法将通过额外的催化驱动CVD技术来拓宽，该技术允许在不使用模板的情况下获得排列有序的独立CNT阵列。与目前使用的方法相比，该方法将产生高度排列的CNT，其具有更窄的管直径和单个CNT之间的空隙空间，并且除了单个CNT在更大的空间区域上的甚至更高的垂直对齐之外。作为一种新的聚合物体系，我们将介绍具有重要技术意义的单相聚合物聚对二甲苯（PPX）。关于其与纳米或更低的亚毫米尺寸制度上的表面的微观界面性质的理解，这种聚合物还没有被研究，尽管其巨大的技术重要性。在继续我们正在进行的项目工作与盘绕聚合物聚苯乙烯和PMMA，并通过扩大它到技术上的重要性，并比较目前研究的聚苯乙烯和PMMA聚合物刚性PPX聚合物. [CNT//CNT]界面和[CNT//PPX//CNT]界面相将通过实验散射技术以及我们小组在第一个项目期间开发的理论方法进行研究。我们的中心总体科学项目目标在新的项目期间仍然有效，并且是解开和理解在界面[CNT//聚合物]以及[CNT//聚合物//CNT]之间的界面中控制聚合物链构象的重要因素，其中聚合物嵌入有序CNT阵列内的单个CNT之间。小角和广角X射线散射将用于研究所形成的界面相的结构。广角散射将特别地提供关于沉积的聚合物的结晶度的信息。为了反映新的实验情况，理论研究应扩展到新的CNT阵列结构与刚性PPX聚合物，这将允许orientationdependent与CNT的相互作用。

In our project, we are furthermore aiming at a concerted experimental and theoretical approach between our three groups to understand the interaction of polymers with carbon nanotubes (CNTs). We are using highly ordered two-dimensional CNT architectures as solids, and single-phase polymers. The interaction of this material with single polymers, such as deuterated polystyrene and PMMA (ongoing work and to be finished work in the first project period), as well as with poly(para-xylylene), PPX, (new work in the following project period) will be studied by experimental and theoretical means in order to gain a deeper understanding of the crucial factors determining the interface and interphase formation in such CNT/polymer hybrids. For the synthesis and alignment of the CNTs, our established, template-based approach will be widened by an additional, catalytically driven CVD technique, which allows to obtain arranged and ordered, freestanding CNT arrays without the use of a template. This process will result in highly arranged CNTs with narrower tube diameters and intersticial void space between individual CNTs, and in addition to an even higher vertical alignment of individual CNTs over larger spatial areas, as compared to the currently used approach. As new polymer system we will introduce the technogically important single-phase polymer poly-para(xylylene) (PPX). With respect to an understanding of its microscopic interface properties with surfaces on the nm or lower sub mm size regime, this polymer has not been studied at all, despite its enormous technological importance. In continuation of our ongoing project work with the coiled polymers polystyrene and PMMA, and by expanding it into the technologically important, and compared to the currently studied polystyrene and PMMA polymers stiffer PPX polymer. The [CNT // CNT] interface and the [CNT // PPX // CNT] interphase will be studied by experimental scattering techniques as well as theoretical methods developed by our groups in the first project period. Our central overall scientific project goals remain valid for the new project period and are to unravel and understand important factors which govern polymer chain conformation at the interface [CNT // polymer] as well as in the interphase between [CNT // polymer // CNT] in which a polymer is embedded between individual CNTs within an ordered CNT array. Small and wide angle X-ray scattering will be used to study the structure of the interphase formed. Wide angle scattering will in particular provide information on the crystallinity of the deposited polymer. In order to reflect the new experimental situation, the theoretical investigation shall be extended to the new CNT array structures with the stiffer PPX polymers which will allow orientationdependent interactions with the CNTs.