GOALI: Understanding for Control of Gas Barrier Properties of Poly(ethylene terephthalate) and Related Polymers

GOALI：了解聚对苯二甲酸乙二醇酯及相关聚合物的气体阻隔性能的控制

• 批准号: 9986467
• 负责人: Sergei Nazarenko
• 金额: $ 35万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-02-15 至 2004-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9986467&HistoricalAwards=false
• 关键词: GOALI; Understanding; Control; Gas; Barrier

This GOALI proposal (co-supported by the Office of Multidisciplinary Activities of the Directorate for Mathematical & Physical Sciences) describes a synergistic collaborative research effort to elucidate the fundamental structural characteristics that control gas transport through glassy polymers using poly(ethylene terephthalate) (PET) as the base material. The combination of cost, materials and processing properties has made poly(ethylene terphthalate) (PET) one of the most important food-packaging resins. New requirements have emerged in recent years. PET has shortcomings for making hot-fillable bottles and containers for oxygen sensitive foods and beverages. For these appellations the modification and improvement of gas and thermal properties of PET is required. The synergism of the collaboration is based on expertise and facilities in transport measurements and structural characterization at Case Western Reserve University, the computer modeling expertise at Georgia Institute of Technology, and the polyester synthesis capabilities of KoSa Corporation, the world's largest produce of thermoplastic polyesters. The chemical structure of PET will be modified by copolymerization, and the solid state structure will be modified by crystallization and orientation. The research plan encompasses design and synthesis of new PET copolymers, gas transport measurements, correlation with molecular relaxation processes, and computer modeling and simulation of structure, molecular motions, and static and dynamic aspects of free volume. In addition, the experimental study addresses the effects of solid state morphology obtained upon crystallization, orientation and heat-setting on gas transport.The proposed resrach will have a fundamental impact on understanding the basic mechanisms of gas transport through glassy state in amorphous, semicrystalline and oriented polymeric structures. It will also have a broad impact on polymer education at Case Western Reserve University and Georgia Tech. By interacting closely with the industrial partner, graduate students will become familiar with the needs and perspectives of the industrial sector. Undergraduate students will also have the opportunity to participate in the research. Invited lectures by the industrial co-PI in polymer science courses will expose graduate and undergraduate students to issues in the application of barrier and transport properties. It is also anticipated that as a result of this project, experiments in transport properties will be incorporated into the polymer science laboratory courses.

该目标提案（由数学和物理科学局的多学科活动办公室共同支持）描述了一项协同的协作研究工作，旨在阐明使用多（乙烯第三苯甲酸乙二烯酸乙酯）（PET）（PET）控制气体通过玻璃质聚合物（PET）的基本结构特征作为基础材料。 成本，材料和加工特性的结合使聚（乙二醇乙酸乙酸乙酯）（PET）成为最重要的食品包装树脂之一。 近年来出现了新的要求。 宠物有制作可热填充瓶和氧气敏感食品和饮料容器的缺点。 对于这些称谓，需要修改和改善PET的气体和热性能。 合作的协同作用是基于Case Western Reserve University的运输测量和结构表征的专业知识和设施，佐治亚理工学院的计算机建模专业知识以及Kosa Corporation的聚酯合成能力，Kosa Corporation是世界上最大的热塑性聚酯产品。 PET的化学结构将通过共聚物化来修饰，固态结构将通过结晶和方向修改。 该研究计划包括新的PET共聚物的设计和合成，气体传输测量，与分子弛豫过程的相关性以及结构的计算机建模和模拟，分子运动以及自由体积的静态和动态方面。 此外，实验研究探讨了在结晶，取向和热量设置对气体传输的固态形态的影响。拟议的Resrach将对理解通过无定形，半晶和定向聚合物结构中玻璃态的气体传输的基本机制产生根本性的影响。 这也将对Case Western Reserve University和Georgia Tech的聚合物教育产生广泛的影响。 通过与工业合作伙伴紧密互动，研究生将熟悉工业部门的需求和观点。 本科生还将有机会参加研究。 工业Co-Pi在聚合物科学课程中的邀请讲座将使研究生和本科生在应用障碍和运输物业的应用方面。 还可以预料，由于该项目，运输特性的实验将纳入聚合物科学实验室课程中。