Rapid routes to highly branched, interfacially active silicones

快速生产高度支化的界面活性有机硅

• 批准号: 501646-2016
• 负责人: Brook, Michael
• 金额: $ 5.46万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=646313
• 关键词: Rapid; routes; highly; branched; interfacially

Silicone polymers are requisite materials in almost every technological area of developed societies, from antifoams, to wound dressings and intraocular lenses. Their susceptibility to acid and base means that facile and practical synthesis leads to complex mixtures of (lower value) materials with broad ranges of properties. MQ and MDTQ resins comprise one class of particularly high value silicone resins, with a market value of over USD$ 2 billion dollars/year. These are hyperbranched polymers that provide highly efficient reinforcement in elastomer and gel systems: in the latter case they also facilitate tack and adhesion, for example, on wound dressings. ****The Piers-Rubinsztajn reaction (PR) permits the rapid assembly of complex 3 dimensional (3D) structures. In the research project we propose to develop facile, industrially practical, short (1-3 steps) PR-based routes to hyperbranched polymers by creating libraries of precursor dendrons that can be combined in a 'mix-and-match' manner. The products will range in molecular weight (MW) from 3000-10000 g/mol and their physical properties will be documented and the optimal range(s) of branching and MW will be established for certain applications. Structure (MW, 3D structure, including geometry and rigidity)/property (adhesion, reinforcement) relationships will be established. This approach will supplant traditional industrial routes that lead to complex mixtures of poorer performing materials. ****The proposed work has benefits to Canada through the development of silicones for an Ontario company that can realize the benefits directly: Siltech currently exports most of its products to the US and elsewhere. In addition, the project will train market ready HQP because of the technical, critical thinking and problem solving skills they will learn through their research and direct interaction with our industrial sponsor.**

有机硅聚合物是发达国家几乎所有技术领域的必备材料，从消泡剂到伤口敷料和人工晶状体。它们对酸和碱的敏感性意味着简单且实用的合成可以产生具有广泛特性的（较低价值）材料的复杂混合物。 MQ 和 MDTQ 树脂是一类特别高价值的有机硅树脂，市场价值超过 20 亿美元/年。这些是超支化聚合物，可在弹性体和凝胶系统中提供高效的增强作用：在后一种情况下，它们还有助于粘着和粘附，例如在伤口敷料上。 ****Piers-Rubinsztajn 反应 (PR) 允许快速组装复杂的 3 维 (3D) 结构。在该研究项目中，我们建议通过创建可以以“混合匹配”方式组合的前体树枝状分子库，开发简便、工业实用、短（1-3步）基于PR的超支化聚合物路线。产品的分子量 (MW) 范围为 3000-10000 g/mol，其物理特性将被记录下来，并针对某些应用确定最佳的支化范围和 MW。将建立结构（MW、3D结构，包括几何形状和刚度）/性能（粘合力、增强力）关系。这种方法将取代导致性能较差的材料的复杂混合物的传统工业路线。 ****拟议的工作通过为安大略省的一家公司开发有机硅而为加拿大带来好处，该公司可以直接实现好处：Siltech 目前将其大部分产品出口到美国和其他地方。此外，该项目还将培训市场准备好的 HQP，因为他们将通过研究以及与我们的行业赞助商的直接互动来学习技术、批判性思维和解决问题的技能。 **