Filler-Induced Modulation of Texture Evolution in Block Copolymer Blend Materials

嵌段共聚物共混材料中填料诱导的织构演化调节

• 批准号: 1006473
• 负责人: Michael Bockstaller
• 金额: $ 33万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1006473&HistoricalAwards=false
• 关键词: Filler; Induced; Modulation; Texture; Evolution

TECHNICAL The objective of the proposed research program is to understand the implications of homopolymer and electrolyte additives on the texture formation in block copolymer materials, and to establish the effect of filler particle shape on texture formation in block copolymer/nanoparticle blends. Specifically, this program will address the following questions: (1) What is the significance of enthalpic interactions on the grain boundary segregation process of homopolymer fillers and how does enthalpic interaction affect the capacity of a filler component to stabilize grain boundary structures? (2) To what extent does the effect of filler species on the grain boundary formation process obey universal principles? (3) Is it possible to selectively stabilize particular grain boundary structures by addition of filler particles that exhibit defect geometry-matched crystal shapes and what is the implication of grain boundary discrimination on the texture evolution of block copolymer/nanoparticle blends? Ultimately, this program aims to contribute to the knowledge-base that will be critical for the future rational design of block copolymer nanocomposite materials with tailored properties that are relevant to a host of transformative technology applications ranging from microfabrication or optical coatings to materials for energy storage and conversion. The proposed research will involve experimental and characterization techniques that are complementary to existing techniques at Carnegie Mellon University and that will be beneficial to the wider polymer community in the Pittsburgh area.NON-TECHNICAL The aim of this proposal is to understand the governing parameters that control structure formation in block copolymer-hybrid materials. These are materials that are capable of the self-organization into a hierarchy of functional nanostructures that are of technological relevance in applications ranging from polymer membranes for next-generation lithium ion batteries to high-performance polymer photovoltaic materials. The particular goal of this project is to develop processes to control the formation of defects in these nanostructures, a key requirement for the future technological exploitation of block copolymer hybrid materials. The program will enhance the teaching of two polymer classes and provide training for one graduate and several undergraduate researchers in the critical area of polymer and nanoscale materials. Ongoing collaborations with researchers at Florida A&M University will be leveraged to enhance participation of minority students within the program. By virtue of guest lectures and demonstrations on the particular topic of ?Nanostructured Materials? this project will furthermore aim to stimulate students of middle and high schools in the East Liberty School district of Pittsburgh to pursue higher education in STEM related areas.

该研究计划的目的是了解均聚物和电解质添加剂对嵌段共聚物材料织构形成的影响，并确定填料颗粒形状对嵌段共聚物/纳米颗粒共混物织构形成的影响。具体而言，该计划将解决以下问题：（1）什么是晶界偏析过程的均聚物填料的相互作用的意义，以及如何影响的能力，填料组分的晶界结构稳定的相互作用？(2)填料种类对晶界形成过程的影响在多大程度上遵循普遍性原则？(3)是否有可能选择性地稳定特定的晶界结构，通过添加填料颗粒，表现出缺陷的几何形状匹配的晶体形状和什么是嵌段共聚物/纳米粒子共混物的纹理演变的晶界歧视的含义？最终，该计划旨在为未来合理设计嵌段共聚物纳米复合材料的知识基础做出贡献，这些材料具有定制的特性，这些特性与许多变革性技术应用相关，从微细加工或光学涂层到能量存储和转换材料。拟议的研究将涉及实验和表征技术，是在卡内基梅隆大学现有的技术的补充，这将有利于更广泛的聚合物社区在匹兹堡area.NON-TECHNICAL本提案的目的是了解控制结构形成的控制参数，在嵌段共聚物混合材料。这些材料能够自组织成功能纳米结构的层次结构，这些功能纳米结构在从下一代锂离子电池的聚合物膜到高性能聚合物光伏材料的应用中具有技术相关性。该项目的具体目标是开发控制这些纳米结构中缺陷形成的工艺，这是嵌段共聚物杂化材料未来技术开发的关键要求。该计划将加强两个聚合物类的教学，并为一个研究生和几个本科生研究人员在聚合物和纳米材料的关键领域提供培训。正在进行的合作与研究人员在佛罗里达A M大学将被利用，以提高少数民族学生在该计划的参与。通过客座讲座和演示的特殊主题？纳米结构材料？该项目还将鼓励匹兹堡东自由学区的初中和高中学生在STEM相关领域接受高等教育。