Collaborative Research: Polar-Polyolefin Block Copolymers via MILRad Functionalization: A Platform for Amphiphilic Nanostructured Material Synthesis

合作研究：通过 MILRad 功能化制备极性聚烯烃嵌段共聚物：两亲性纳米结构材料合成平台

基本信息

批准号：
2108576
负责人：
Eva Harth
金额：
$ 32.14万
依托单位：
University of Houston
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-08-01 至 2024-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2108576&HistoricalAwards=false
关键词：
Collaborative Research Polar Polyolefin Block

项目摘要

With the support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Professor Eva Harth at the University of Houston and Professor Krzysztof Matyjaszewski at Carnegie Mellon University aim to explore the capabilities of generating anchor units in polymers of plastic materials during their synthesis and using these "plug-in" units as activators for further modification of the polymer. This two-step process will result in polymer chains that are composed of two segments (or blocks) of distinctly different structures and properties. The unique polarity and solubility of each block allows the polymer to be used as "stitches" between two immiscible plastic materials or to form 3-D structures in shapes of spheres, worms and disks. The two research teams complement each other in their areas of expertise and are expected to work synergistically to establish chemical pathways to synthesize these diblock copolymers and study their special properties. An automated continuous flow approach will be investigated to increase further the ease and practicability of diblock polymer preparation. The results of this research are expected to enhance knowledge in how to combine polar and non-polar chains to gain access to novel materials, and the accomplishments will be communicated to the public and scientific community. This project will help to prepare a skilled workforce for the polymer industry by training graduate students and undergraduates, including students from underrepresented groups, in many aspects of polymer chemistry, organometallic chemistry and analysis.Specifically, the two teams will collaborate to explore block copolymer and nanostructure synthesis based on new methods development, including a novel radical- and spin-trapping capability, to integrate olefin, acrylic and ethylene oxide segments into one polymeric architecture. The generation of macro-radicals through metal insertion/light-initiated radical polymerization as part of the polymerization pathway will be utilized to prepare intermediates to promote controlled radical polymerization via atom transfer radical polymerization and nitroxide-mediated polymerization. This strategy may open up a new avenue for polar polyolefin di-block and triblock copolymers via chain extension and is expected to provide convenient access to block copolymers not yet available using existing methodology or only available via multi-step approaches. Polymerization-induced self-assembly processes and crystallization-driven self-assembly will be investigated as potential approaches to form nanostructures from di- and triblocks composed of polyolefins and polyacrylates. Continuous flow chemistry will be used to optimize and scale up polyolefin macro-initiator synthesis and will be used in support of the synthesis of a diverse set of polyolefin-containing nanostructures.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学系中的大分子，超分子和纳米化学计划的支持下，休斯敦大学的伊娃·哈斯教授和卡内基·梅伦大学的Krzysztof Matyjaszewski教授，旨在探索这些在莫诺的塑料材料中的塑料材料的能力，并将其用于塑料材料的能力，并将其用于合成材料，并将其用于塑料材料，并将其用于合成的塑料材料。聚合物。这两个步骤过程将导致聚合物链由两个截然不同的结构和特性组成的聚合物链。每个块的独特极性和溶解度使聚合物可以用作两种不混溶的塑料材料之间的“针迹”，或在球体，蠕虫和磁盘形状形状形状形状形成3-D结构之间。这两个研究团队在其专业领域相互补充，并有望协同工作，以建立化学途径来合成这些二嵌段共聚物并研究其特殊特性。将研究一种自动连续流动方法，以进一步提高二嵌段聚合物制备的易用性和实用性。这项研究的结果有望增强如何结合极性和非极性链以获取新型材料的知识，并将成就传达给公共和科学界。 This project will help to prepare a skilled workforce for the polymer industry by training graduate students and undergraduates, including students from underrepresented groups, in many aspects of polymer chemistry, organometallic chemistry and analysis.Specifically, the two teams will collaborate to explore block copolymer and nanostructure synthesis based on new methods development, including a novel radical- and spin-trapping capability, to integrate olefin,丙烯酸和氧化乙烷段分为一个聚合物结构。通过金属插入/光激发自由基聚合的产生，作为聚合途径的一部分，将使用原子转移自由基聚合和硝基氧化物介导的聚合化来促进中间体，以促进中间体。该策略可能会通过链扩展为极性聚烯烃Di-Block和Triblock共聚物开辟新的途径，并有望为尚未使用现有方法或仅通过多步进方法获得的块共聚物提供便利的访问。聚合诱导的自组装过程和结晶驱动的自组装将被研究，以形成由多烯烃和聚丙烯酸酯组成的二嵌段和三嵌段的潜在方法。连续的流化学将用于优化和扩展聚烯类宏观发入剂的合成，并将用于支持合成一组多样的含聚烯烃的纳米结构。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识优点和广泛的范围来评估的。