The Preparation & Characterization of Refined & Complex Polyolefin Structures

准备

• 批准号: 0703261
• 负责人: K. Wagener
• 金额: $ 40.5万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0703261&HistoricalAwards=false
• 关键词: Preparation; Characterization; Refined; Complex; Polyolefin

TECHNICAL SUMMARYCopolymerization metathesis polycondensation chemistry is being pursued to create refined, practical models of high-volume polymers such as low density polyethylene, metallocene polyethylene, and polyvinyl chloride. The objective of this aspect of the research is to better understand polymer structure and thus enhance the performance of the world's largest volume synthetic material (polyolefins). The effort focuses on macromolecular synthesis discovery research, including fundamental exploration of polymer structure.In addition, different metathesis polymerization strategies will be employed to synthesize a variety of complex polyolefin structures: core/shell nanoparticles using nonaqueous emulsion ADMET chemistry, thin film laminates via solid state metathesis chemistry, nanoblends using dual heterogeneous catalyst systems, precision ionomers/carboxylic acid polymers using tailored diene monomers, and peptide modified polyolefins using melt polymerization techniques. Each of these new materials represents opportunity for discovery; specific applications targeted for them include pro-drug delivery, tissue engineering, high strength ionomers, conductive polymer laminates, and materials offering enhanced gas transport.NON-TECHNICAL SUMMARYThe common theme for the proposed activity is to improve the behavior of a class of plastics known as polyolefins. During the past 60 years plastics have become a major industry that affects everyone in society from providing better packaging to new textiles to cutting edge technologies found in sophisticated applications such as televisions, cars, computers, and medical devices. In fact, plastics have become the most used synthetic material in the world. This NSF supported research can lead to new plastic materials such as biosensors, lightweight conductors, high strength nanocomposites, even tailored pharmaceuticals. The work will be conducted at the graduate research level in collaboration with major research facilities in the USA (at University of Pennsylvania, Florida State University) as well as the Japan Atomic Energy Agency, and the Max Planck Institute for Polymer Research in Germany.From an educational perspective, the research will enhance the "Florida Opportunity Scholars" (ROS) program at the University of Florida. This program targets undergraduate students who are the first generation in their families to attend a university and is available when family income is less than $40,000. The goal is to attract these talented yet disadvantaged students into the fields of science and engineering.

技术概述共聚复分解缩聚化学被用于制造高体积聚合物如低密度聚乙烯、茂金属聚乙烯和聚氯乙烯的精制的、实用的模型。 这方面研究的目的是更好地了解聚合物结构，从而提高世界上产量最大的合成材料（聚烯烃）的性能。 该项目的重点是大分子合成发现研究，包括聚合物结构的基础探索。此外，将采用不同的复分解聚合策略合成各种复杂的聚烯烃结构：使用非水乳液ADMET化学的核/壳纳米颗粒，通过固态复分解化学的薄膜层压体，使用双非均相催化剂体系的纳米共混物，使用定制的二烯单体的精密离聚物/羧酸聚合物，和使用熔融聚合技术的肽改性的聚烯烃。这些新材料中的每一种都代表着发现的机会;针对它们的具体应用包括前体药物递送、组织工程、高强度离聚物、导电聚合物层压材料和提供增强气体传输的材料。非技术概述拟议活动的共同主题是改善一类称为聚烯烃的塑料的行为。 在过去的60年里，塑料已经成为一个影响社会每个人的主要行业，从提供更好的包装到新的纺织品，再到电视、汽车、计算机和医疗设备等复杂应用中的尖端技术。 事实上，塑料已经成为世界上使用最多的合成材料。 这项由美国国家科学基金会支持的研究可以开发出新型塑料材料，例如生物传感器、轻质导体、高强度纳米复合材料，甚至定制药物。 该研究将与美国主要研究机构（宾夕法尼亚大学、佛罗里达州立大学）、日本原子能机构和德国马克斯·普朗克高分子研究所合作，在研究生阶段开展研究。从教育的角度来看，该研究将加强佛罗里达大学的“佛罗里达机会学者”（ROS）计划。该计划针对的是家庭中第一代上大学的本科生，当家庭收入低于40，000美元时可以使用。 目标是吸引这些有才华但处境不利的学生进入科学和工程领域。