SusChEM: Design and Evaluation of Soybean Oil Based Adhesives for Aqueous Environments

SusChEM：用于水环境的豆油基粘合剂的设计和评估

• 批准号: 1508440
• 负责人: Abraham Joy
• 金额: $ 39万
• 依托单位: University of Akron
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1508440&HistoricalAwards=false
• 关键词: SusChEM; Design; Evaluation; Soybean; Oil; SusChEM; Design; Evaluation; Soybean; Oil

Non-technical: Adhesives are extensively used in several applications and are almost always made from petroleum based starting materials, which is a depleting resource. Therefore replacing these resources with widely available and sustainable materials such as soybean oil for the synthesis of adhesives is a national need. In medicine, adhesives are a critical component, and in several instances such as in a cardiac surgery, medical adhesives are a necessity. However, the performance of human-made adhesives is often less than optimal when it is applied in surgical or wet environments. Nature provides spectacular examples of adhesives that work extraordinarily in wet and harsh conditions. Mussels are able to secrete protein based adhesives that enable them to stick to boats and docks underwater. The PIs have developed an adhesive that is made from readily available and sustainable soybean oil which demonstrates superior adhesion to surfaces in wet conditions. This award is aimed at providing a better understanding of the chemical processes that are responsible for strong adhesion of this soybean oil based adhesive in wet conditions. The PIs will systematically modify the chemical composition of these adhesives and examine the nature of the adhesion. Such studies will enable design of adhesives that perform in challenging environments and which are translationally viable. The award enables graduate students to gain expertise in techniques and methodologies that are at the cutting edge of their field. In addition, the award will provide research opportunities for undergraduate and high school students.Technical: Adhesives such as those secreted by mussels and sandcastle worms are impressive for their ability to function in harsh conditions such as sea water and high winds. Synthetic polymers fall far short in their ability to mimic this ability to perform in wet environments. This award is aimed at gaining a better understanding of the interactions at the interface that enable adhesion under wet environments. The PIs have designed a modular polyester platform that enables the incorporation of various functional groups into the designed polyester. The major monomer for the synthesis of the adhesive polyester is derived from soybean oil - a widely available and sustainable resource. The designed polyester will contain long-chain pendant groups derived from soybean oil, which will provide the hydrophobic character to enable exclusion of water. In addition, the adhesion to a substrate will be provided by catechol units. Cohesive strength will be provided by coumarin units that crosslink upon photoirradiation. It will also contain various functional groups such as hydroxyl and amine groups that will affect the adhesion. The contribution of these functional groups will be examined by techniques that probe the substrate interface. Sum-frequency spectroscopy, soft contact mechanics (JKR) and solid state NMR will provide insight into the processes that account for the improved adhesion of these polyesters in wet environments. Students trained through this award will gain expertise in polymer synthesis, polymer characterization using cutting edge surface characterization techniques, and the opportunity to work collaboratively on teams that bring complementary skills.

非技术：粘合剂在多种应用中广泛使用，几乎总是由石油的起始材料制成，这是一种耗尽的资源。因此，用广泛可获得的可持续材料（例如大豆石油）代替这些资源以综合粘合剂是国家需求。在医学上，粘合剂是关键的组成部分，在多种情况下，例如心脏手术，医学粘合剂是必不可少的。但是，当在手术或潮湿的环境中应用时，人造粘合剂的性能通常不如最佳。大自然提供了在潮湿和恶劣条件下运作极其起作用的粘合剂的壮观例子。贻贝能够分泌基于蛋白质的粘合剂，使它们能够粘在水下的船只和码头上。 PI开发了一种粘合剂，该粘合剂是由易于使用和可持续的大豆油制成的，在潮湿条件下表现出对表面的较高粘附力。该奖项旨在更好地理解负责在潮湿条件下这种大豆基油粘合剂的牢固粘附的化学过程。 PIS将系统地修饰这些粘合剂的化学组成，并检查粘附的性质。这样的研究将使在具有挑战性的环境中执行并在翻译上可行的粘合剂设计。该奖项使研究生能够在其领域最前沿的技术和方法方面获得专业知识。此外，该奖项将为本科生和高中生提供研究机会。技术：诸如贻贝和沙堡蠕虫分泌的粘合剂，诸如在海水和大风之类的恶劣条件下运作的能力令人印象深刻。合成聚合物在模仿这种在潮湿环境中表现的能力的能力远远不足。该奖项旨在更好地了解界面上的相互作用，该界面可以在湿环境下粘附。 PI设计了一个模块化的聚酯平台，该平台可以将各种官能团纳入设计的聚酯。合成粘合剂聚酯的主要单体是源自大豆石油的，这是一种广泛可用且可持续的资源。设计的聚酯将包含源自大豆油的长链吊坠基团，该基团将提供疏水性，以排除水。此外，底物的粘附将由儿茶醇单元提供。在光辐射时交联的香豆素单元将提供凝聚力的强度。它还将包含影响粘附的各种官能团，例如羟基和胺基。这些官能团的贡献将通过探测底物界面的技术进行检查。总和光谱，软接触力学（JKR）和固态NMR将提供有关探讨这些聚酯在湿环境中改善粘附的过程的洞察力。接受该奖项的培训的学生将获得聚合物合成，使用尖端表面特征技术的聚合物表征的专业知识，以及有机会在带来互补技能的团队上合作。