Ultrastructural Properties of Polymers

聚合物的超微结构性质

• 批准号: 9214853
• 负责人: Edwin Thomas
• 金额: $ 47.1万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-02-01 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9214853&HistoricalAwards=false
• 关键词: Ultrastructural; Properties; Polymers

This study deals with the microstructures of block copolymer and block copolymer/homopolymer blend systems. Self-assembled neat diblock and diblock/homopolymer(s) structures will be formed from chains of various architecture, composition and molecular weight. Emphasis will be placed on novel processing so as to provide large single-crystal-like samples of various desired geometries. The evolution of the microdomain morphology during order-order phase transitions and during mechanical deformation along particular high symmetry directions will be quantitatively followed to obtain information on the fundamentals of phase transitions in block copolymer systems and on their large strain mechanical behavior. The main investigative techniques are roll casting, mechanical testing, optical microscopy, small-angle x-ray scattering, transmission electron microscopy, scanning electron microscopy, digital image analysis, and computer graphics of surfaces. The goal of the research is to contribute to the basic understanding of processing-structure-property relationships, which can provide a basis for development of polymeric materials with improved performance.

本文研究了嵌段共聚物的微观结构， 嵌段共聚物/均聚物共混体系。 自组装整齐 二嵌段和二嵌段/均聚物结构将由 各种结构、组成和分子量的链。 重点将放在新的处理，以提供大的 各种所需几何形状的单晶样样品。 的 有序-有序相微区形貌的演化 在机械变形过程中，沿着特别高的 将定量地遵循对称方向以获得 关于块中相变的基本原理的信息 共聚物体系和它们的大应变力学行为。 主要研究技术有铸轧、机械 测试，光学显微镜，小角度X射线散射， 透射电子显微镜，扫描电子显微镜， 数字图像分析和表面计算机图形学。 的 研究的目的是促进对以下问题的基本理解： 处理-结构-属性关系，这可以提供 开发具有改进的聚合物材料的基础 性能