PFI-TT: A non-toxic, biobased, and recyclable polyurethane for foam-in-place packaging and rigid foam insulation.

PFI-TT：一种无毒、生物基且可回收的聚氨酯，用于现场发泡包装和硬质泡沫绝缘材料。

• 批准号: 2122822
• 负责人: Srikanth Pilla
• 金额: $ 25万
• 依托单位: Clemson University
• 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: 2021-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2122822&HistoricalAwards=false
• 关键词: PFI; TT; non; toxic; biobased

The broader impact/commercial potential of this Partnerships for Innovation – Technology Translation (PFI-TT) project is the conversion from a toxic to benign manufacturing sequence for polyurethane foams in the packaging, insulation, and construction markets. Polyurethanes rank the 6th most produced plastic in the world yet use cancer-causing, mutagenic and reproductive toxins in their manufacture. This project combines a 100% biobased source with non-toxic ingredients to synthesize polyurethane foams that can be recycled back to their starting materials at their end-of-life. The ideal of reducing plastic waste in the environment and eliminating the use of carcinogenic material is desired across many industries. However, the use of one-time-use plastics in packaging applications as well as foams used for insulation has placed particular environmental focus on the polyurethane industry. This project addresses the need to transition from petroleum-based sources to biobased feedstocks and enable industrially viable processes for non-toxic polyurethanes in diverse commercial platforms. The successful outcome of this project would be a complete shift for the polyurethane industry by innovating new routes to polyurethanes that embrace a circular lifecycle. This project seeks to enable a room temperature foaming and curing protocol for a biobased, non-isocyanate polyurethane. Polyurethanes are manufactured commercially from polyols and isocyanates; The isocyanate carries significant health and safety dangers as it is a cancer-causing, mutagenic and a reproductive toxin (CMR). Non-isocyanate formulations in industry are currently very limited due to the inability to adapt new non-isocyanate chemistries to processing conditions typically used in industrial and commercial applications. To create reactive biobased precursors for synthesis, reductive catalytic fractionation (RCF) will be employed to woody feedstocks to extract an oil rich in bi-functional aromatic compounds capable of functionalizing with cyclic carbonates. A previous protocol will be leveraged to synthesize non-isocyanate polyurethane foams with specific chemical linkages capable of depolymerization post-synthesis. Room temperature foaming will be aided by catalyst optimization and a ultraviolet light-assisted curing process through the addition of acrylated monomers and reactive diluents containing vinyl groups. This approach will also facilitate the ability to vary the viscosity of the reaction mixture to produce low density foams for packaging applications. The successful outcome of the project may demonstrate a commercially viable process for producing non-toxic polyurethanes at room temperature that are specifically designed for degradation at their end-of-life.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.

该创新合作伙伴关系 - 技术转化 (PFI-TT) 项目的更广泛影响/商业潜力是将包装、绝缘和建筑市场中的聚氨酯泡沫从有毒的生产顺序转变为无害的生产顺序，聚氨酯是产量第六大的塑料。该项目将 100% 生物基原料与无毒成分结合起来，合成可回收的聚氨酯泡沫。许多行业都希望在其使用寿命结束时恢复其原始材料，从而减少环境中的塑料废物并消除致癌材料的使用。然而，在包装应用中使用一次性塑料。该项目解决了从石油原料转向生物基原料的需求，并在各种商业平台上实现了工业上可行的无毒聚氨酯工艺。这个项目该项目旨在为采用多元醇和异氰酸酯商业化生产的生物基非异氰酸酯聚氨酯提供室温发泡和固化方案，这将是聚氨酯行业的彻底转变。 ; 异氰酸酯具有显着的健康和安全危险，因为它是一种致癌、致突变和生殖毒素 (CMR)。由于无法使新的非异氰酸酯化学物质适应工业和商业应用中通常使用的加工条件，目前工业中的配方非常有限。为了创建用于合成的反应性生物基前体，还原催化分馏（RCF）将用于木质原料。提取富含能够与环状碳酸酯官能化的双官能芳香族化合物的油，将利用先前的方案来合成具有特定化学键的非异氰酸酯聚氨酯泡沫。通过添加丙烯酸酯单体和含有乙烯基的反应性稀释剂，催化剂优化和紫外光辅助固化过程将有助于室温发泡。生产用于包装应用的低密度泡沫，该项目的成功结果可能证明了一种在室温下生产无毒聚氨酯的商业可行的工艺，该工艺专门设计用于在室温下降解。该奖项反映了 NSF 的法定使命，并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，被认为值得支持。

项目成果

From Petroleum to Biobased Crude: A Thermoplastic Polyurethane from Lignin-oil without Isocyanates

从石油到生物基原油：不含异氰酸酯的木质素油热塑性聚氨酯

• 发表时间: 2022-06
• 期刊: ANTEC 2022
• 作者: Sternberg, James;Brandner, David G.;Dreiling, Reagan J.;Ringsby, Arik;Kruger, Jacob S.;Beckham, Gregg T.;Pilla, Srikanth
• 通讯作者: Pilla, Srikanth