Water-based adhesive for zero-waste economy

实现零废物经济的水基粘合剂

• 批准号: EP/V053531/1
• 负责人: Mark Geoghegan
• 金额: $ 32.19万
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FV053531%2F1
• 关键词: Water; based; adhesive; zero; waste

The purpose of this proposal is to create a water-based reversible adhesive using commodity materials that is inexpensive, scalable, and environmentally friendly. The target impact of this research is a commercially successful adhesive that has widespread applications, particularly in areas where recycling is important, such as bottle labelling. Other areas, such as automotive parts and e-waste management, would also benefit by supporting a design for an environment approach in which, at the end of the first life cycle, products can be dismantled, and parts repurposed. The technology can also function as a simple water-based adhesive to replace other glues based on volatile organic compounds. The premise is simple: a surface coated with a positively charged polymer can adhere to one coated with a negatively charged polymer. These will stick in water and remain adhered even after the contact has dried. Changing the local pH changes the charge on the polyelectrolytes so that, in an acid pH, the polyacid will become neutral. The polybase will remain charged and the adhesion fails. Previous demonstrations of reversible adhesion have required the end-user to perform significant chemistry. Here we are proposing a simple route to reversible adhesion based on a standard polymerization process. The surfaces to be adhered would each be coated by separate layers and joined. Adhesion is expected to be instantaneous and durable. Unlike other water-based adhesives, exposure to moisture would not compromise the joint. An acid or alkaline wash would be used to separate the two components. A rapid and effective means of disjoining requires significant research and forms a large part of this proposal. In addition, the spray coating of polyelectrolytes onto surfaces will also be explored as a simple route to adhesion for a limited range of applications. The technology will be validated in collaboration with partner companies.

该提案的目的是使用廉价、可扩展和环境友好的商品材料来创建水基可逆粘合剂。这项研究的目标影响是一种商业上成功的粘合剂，具有广泛的应用，特别是在回收利用很重要的领域，如瓶子标签。其他领域，如汽车零部件和电子废物管理，也将受益于支持一种环境设计方法，在这种方法中，在第一个生命周期结束时，产品可以被拆除，零部件可以被重新利用。该技术还可以作为一种简单的水基粘合剂，取代其他基于挥发性有机化合物的胶水。其前提很简单：一个涂有带正电荷的聚合物的表面可以粘附到一个涂有带负电荷的聚合物的表面。这些将粘在水中，即使在接触干燥后也保持粘附。改变局部pH改变聚电解质上的电荷，使得在酸性pH下，聚酸将变为中性。聚合物基体将保持带电，并且粘合失效。先前的可逆粘附演示要求最终用户执行重要的化学操作。在这里，我们提出了一个简单的路线，可逆粘合的基础上，一个标准的聚合过程。待粘附的表面将各自由单独的层涂覆并接合。粘附力预期是瞬时的和持久的。与其他水基粘合剂不同，暴露在湿气中不会损害接头。将使用酸或碱洗涤来分离这两种组分。一种快速有效的脱离手段需要大量的研究，这是本提案的一大部分。此外，还将探索将聚电解质喷涂到表面上作为一种简单的粘合方法，用于有限的应用范围。该技术将与合作伙伴公司合作进行验证。

项目成果

A reversible water-based electrostatic adhesive.

一种可逆水基静电粘合剂。

• DOI: 10.1002/anie.202310750
• 发表时间: 2024
• 期刊: Angewandte Chemie (International ed. in English)
• 作者: Sierra-Romero A

A reversible water-based electrostatic adhesive

一种可逆水性静电胶

• DOI: 10.1002/ange.202310750
• 发表时间: 2023
• 期刊: Angewandte Chemie
• 作者: Sierra-Romero A