FMRG: Digital Light Manufacturing for the Circular Economy

FMRG：循环经济的数字轻工制造

• 批准号: 2036849
• 负责人: Jay Keasling
• 金额: $ 370.61万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-10-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2036849&HistoricalAwards=false
• 关键词: FMRG; Digital; Light; Manufacturing; Circular

As products change over time, so do the processes that manufacture them. At the beginning of the twentieth century, most consumer goods were made from natural fibers, wood, ceramics, and metal. As the century progressed, petroleum-based plastics became the preferred materials for most consumer products. Replacing petroleum-based plastics in the economy is a serious challenge, and converting renewable raw materials to recyclable products is critical. One goal of this project is to synthesize monomers (the building blocks of polymers) from biomass sugars. Another goal is to design monomers that make polymers that are easy to recycle. The third goal is to demonstrate a digital light manufacturing (DLM) process that produces high-quality 3D-printed parts using those monomers. The ultimate objective is to cycle the monomers through the product and back to monomers, creating a circular path for the material, thereby reducing waste. Also, interactive activities will be developed for K–12 and public audiences to demonstrate the circular material flow. Chemically recyclable photopolymerizable cycloolefin resins with properties tailored for DLM will be designed. The ability to form reversible polymer bonds will guide monomer design. Enzymes and microbial cells for biomanufacturing DLM monomers from renewable feedstocks will be developed based on polyketide synthases (PKSs). DLM processes for photo-polymerization of cycloolefin resins will be developed and improved. Photocatalyst systems, resin rheology, and instrumentation will be co-developed to digitally manufacture precision parts from circular cycloolefin resins. An extensive suite of mechanical tests will be carried out on structures printed from candidate resin formulations for both hard and elastomeric 3D-printed products, based on volumetric 3D printing via tomographic reconstruction. The rigidity, strength, and fracture toughness of 3D-printed cycloolefin resins will be benchmarked against leading conventional photopolymer resins, to guide material and process selection and maximize their impact on future manufacturing.This project is jointly supported by the Cellular and Biochemical Engineering Program (ENG/CBET/CBE), the Synstems and Synthetic Biology Program (BIO/MCB/SSB) and the Chemical Catalysis Program (MPS/CHE/CAT).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.

随着产品随着时间的推移而变化，制造它们的工艺也在变化。在二十世纪初，大多数消费品都是由天然纤维、木材、陶瓷和金属制成的。随着世纪的发展，石油基塑料成为首选。在经济中取代石油基塑料是一项严峻的挑战，将可再生原材料转化为可回收产品至关重要，该项目的目标之一是合成单体（聚合物的组成部分）。另一个目标是设计制造易于回收的聚合物的单体，第三个目标是展示使用这些单体生产高质量 3D 打印零件的数字轻制造 (DLM) 工艺。通过产品循环单体并返回单体，为材料创建循环路径，从而减少浪费。此外，还将为 K-12 和公众观众开展互动活动，以展示循环材料流程。将设计具有针对 DLM 定制特性的光聚合环烯烃树脂，以指导基于光聚酮合酶 (PKS) 的生物制造 DLM 单体的酶和微生物细胞。 -将开发和改进环烯烃树脂的聚合、光催化剂系统、树脂流变学和仪器。共同开发的用于以圆形环烯烃树脂数字化制造精密零件的技术，将基于通过断层扫描刚性重建的体积 3D 打印，对硬质和弹性体 3D 打印产品的候选树脂配方打印的结构进行一系列广泛的机械测试。 3D 打印环烯烃树脂的强度和断裂韧性将与领先的传统光聚合物树脂进行比较，以指导材料和工艺选择，并最大限度地发挥其对未来的影响该项目由细胞与生化工程计划（ENG/CBET/CBE）、系统与合成生物学计划（BIO/MCB/SSB）和化学催化计划（MPS/CHE/CAT）联合支持。该奖项通过使用基金会的智力价值和更广泛的影响审查标准进行评估，NSF 的法定使命被认为值得支持。