聚合物/无机纳米复合材料中界面层性质梯度变化规律及其影响因素研究

项目名称： 聚合物/无机纳米复合材料中界面层性质梯度变化规律及其影响因素研究

项目编号： No.51273178

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 杨晋涛

作者单位： 浙江工业大学

项目金额： 80万元

中文摘要： 聚合物/无机纳米复合材料中界面层性质是决定材料性能的关键因素之一，对其研究一直是材料科学界的热点和难点。针对聚合物/无机纳米复合材料中界面层尺寸微小，结构和性能表征困难等问题，本项目提出以聚合物/无机基材纳米支持膜体系为模型（聚合物薄膜模拟界面层聚合物，无机基材模拟纳米粒子）,采用和频共振光谱表征不同厚度聚合物薄膜的表面性质（如玻璃化转变温度、玻璃态物理老化等），考察聚合物薄膜性质在无机基材作用下梯度变化规律；将聚合物薄膜性质的梯度变化规律与纳米复合材料的分散状态及相关性质相关联，研究聚合物薄膜与纳米复合材料中界面层在某些性质上的相关性，实现界面层性质梯度变化规律的研究，同时建立界面层性质与纳米复合材料宏观性质关联模型。本项目的研究将提供一种深入研究纳米复合材料中界面层性质的方法，揭示无机纳米粒子的补强作用机理，为无机纳米粒子表面改性以及纳米复合材料结构与性能调控提供理论指导及实验依据。

中文关键词： 聚合物/无机纳米复合材料；聚合物薄膜；聚合物刷；界面层性质；梯度变化

英文摘要： The interface between the polymer matrix and inorganic particles in the polymer/inorganic nanocomposites is one of key issues determing the properties of the nanocomposites, and the study on this issue have been attracting the significant attentions from both industrial and scientific communities for decades. However, the size of the interface between the nanoparticle and the polymer matrix is extremely small, which make it difficult to be characterized and investigated. To solve this problem,we propose using the system containing a polymer thin film and a substrate in which the polymer thin film and substrate are used to mimic the polymer matrix and nanoparticle surface, respectively, as a model. For this system, the surface properties,such as glass transition temperature and physical aging of the polymer thin films with different thickness will be characterized by Sum Frequency Generation Spectroscopy（SFG）, from which the property gradient profile of the polymer thin film caused by the substrate surface can be obtained. Associating these gradient profiles with the dispersion state and corresponding properties of the counterpart nanocomposites. The relationship between the polymer thin film and the interface in nanocomposites will be investigated, so the gradient profiles of the interfacial properties in nanoco

英文关键词： Polymer/inorganic nanocomposite；Polymer Film；Polymer brushes；Interfacial properties；Gradient profile