BRITE Relaunch: Realizing the Benefits of Additive Manufacturing for the Microstructural Control of Polymer Material Systems

BRITE 重新启动：实现增材制造对聚合物材料系统微观结构控制的优势

• 批准号: 2227573
• 负责人: David Roberson
• 金额: $ 60万
• 依托单位: University of Texas at El Paso
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-15 至 2025-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2227573&HistoricalAwards=false
• 关键词: BRITE; Relaunch; Realizing; Benefits; Additive

This Boosting Research Ideas for Transformative and Equitable Advances in Engineering (BRITE) Relaunch project will provide knowledge that will solve critical engineering problems on the topic of reusable polymeric materials. The work promises to improve reliability of materials for biomedical applications and enable cost-effective water purification solutions. Central to the success of this project is a new materials design approach involving 3D printing that will be used to create plastic materials that can be easily healed when damaged. The project will be performed at a minority-serving institution, providing equitable and inclusive research and educational opportunities for groups underrepresented in STEM fields. This project will also spearhead the Polymer Pathways Program, an outreach and education effort that will be geared towards the local K-12 population of El Paso, Texas which has a poverty rate greater than the national average and a demographic that is over 80% Hispanic. A central goal is to change attitudes pertaining to plastic materials from that of “use and throw away” to that of “use, heal, reuse.”The overarching goal of this project is to change the paradigm of polymer materials from disposable to reusable through additive manufacturing-enabled microstructural control. This microstructural control will be used to tune the shape memory and self-healing properties of polymer systems. This project will utilize a materials design concept dubbed “quasi-self-assembly” where the morphology of polymer phases is manipulated by the additive manufacturing process of fused filament fabrication. This project will build upon prior discoveries made by the PI which have documented that phase alignment in multi-constituent polymer blends has an influence on shape memory performance. Two main categories of materials will be used in this study; biocompatible polymers and polymers that can be manipulated into ion exchange membranes by way of a facile chemical process that functionalizes styrenic blocks. The knowledge generated by this project will provide engineering foundations for future impacts on a single materials design approach.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.

这个促进工程变革和公平进步的研究思路（BRITE）重新启动项目将提供解决可重复使用聚合物材料主题的关键工程问题的知识。这项工作有望提高生物医学应用材料的可靠性，并实现具有成本效益的水净化解决方案。该项目成功的核心是一种新的材料设计方法，涉及3D打印，将用于创建塑料材料，当损坏时可以很容易地愈合。 该项目将在少数民族服务机构进行，为STEM领域代表性不足的群体提供公平和包容性的研究和教育机会。该项目还将率先开展聚合物途径计划，这是一项针对德克萨斯州埃尔帕索当地K-12人口的宣传和教育工作，该地区的贫困率高于全国平均水平，人口中西班牙裔超过80%。一个中心目标是改变对塑料材料的态度，从“使用和扔掉”转变为“使用、治愈、再利用”。该项目的总体目标是通过增材制造实现微结构控制，将聚合物材料的范式从一次性变为可重复使用。这种微观结构控制将用于调整聚合物系统的形状记忆和自修复性能。该项目将利用被称为“准自组装”的材料设计概念，其中聚合物相的形态通过熔丝制造的增材制造过程来操纵。该项目将建立在PI先前发现的基础上，这些发现证明了多组分聚合物共混物中的相排列对形状记忆性能有影响。本研究中将使用两大类材料：生物相容性聚合物和可通过简单的化学过程将苯乙烯嵌段功能化而制成离子交换膜的聚合物。该项目产生的知识将为未来单一材料设计方法的影响提供工程基础。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

The Effect of Raster Pattern and Acetic Acid Exposure on the Mechanical and Failure Properties of Additively Manufactured PLA and PLA-wood Composite Specimens

• DOI: 10.1007/s11668-023-01681-0
• 发表时间: 2023-05-29
• 期刊: JOURNAL OF FAILURE ANALYSIS AND PREVENTION
• 影响因子: 1.2
• 作者: Carrillo, Luis Lares E.;Salazar, Jose F.;Roberson, David A.
• 通讯作者: Roberson, David A.