Application of cellulose nanocrystals as a functional filler in conductive gel adhesives

纤维素纳米晶作为功能填料在导电凝胶粘合剂中的应用

• 批准号: 522728-2017
• 负责人: Cranston, Emily
• 金额: $ 1.71万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639955
• 关键词: Application; cellulose; nanocrystals; functional; filler

3M Canada has been providing science-based products ranging from healthcare and highway safety to officeproducts and adhesives for over 60 years. They are headquartered in London, ON with research, sales andmanufacturing facilities across Canada. 3M Canada would like to incorporate cellulose nanocrystals (CNCs) asa functional filler into their existing conductive gel adhesives used in bioelectrodes. CNCs are non-toxic, rigidrod shaped particles extracted from wood pulp that possess favourable properties to act as stabilizers,thickeners, templates and reinforcing agents. Conductive gel adhesives, such as in 3M Red Dot monitoringelectrode products, are used routinely in hospitals to monitor electrocardiographic function and to provideinformation in support of diagnosis; consistent performance is essential. Adding CNCs to 3M gel adhesives isanticipated to improve water retention to enhance adhesive and mechanical performance at low humidity. Ourpreliminary studies have shown that adding CNCs to hydrogels significantly increases their mechanicalstrength, functionality and water-uptake abilities.The challenge is to increase the moisture retention (and thus the performance lifetime and reproducibility) ofconductive gel adhesives without negatively affecting other gel properties such as electrochemistry,adhesiveness, strength, and elasticity. We will produce and characterize functionalized CNCs and measure thehybrid gel properties as a function of CNC loading and type, including: water retention/swelling, rheology,transparency, adhesive/mechanical testing. We will work with 3M Canada's R&D Centre for application testingand prototyping to ensure the formulations developed are industrially relevant. This research will establish themain benefits of adding CNCs to 3M's gel adhesives and the IP developed will be exploited in Canada. We arecommitted to helping Canada's Forestry sector and this work will be economically significant for Canada byensuring that we remain at the forefront of CNC discoveries and develop new materials that will lead to jobcreation in Canada.

60多年来，3M加拿大公司一直致力于提供以科学为基础的产品，从医疗保健和高速公路安全到办公产品和粘合剂。3M加拿大公司总部位于安大略省伦敦，在加拿大各地设有研究、销售和制造设施。3M加拿大公司希望将纤维素纳米晶体（cnc）作为功能性填料纳入其现有的用于生物电极的导电凝胶粘合剂中。CNCs是从木浆中提取的无毒，刚性形状的颗粒，具有良好的性能，可作为稳定剂，增稠剂，模板和增强剂。导电凝胶粘合剂，如3M红点监测电极产品，在医院常规用于监测心电图功能并提供支持诊断的信息；一致的性能是必不可少的。在3M凝胶粘合剂中添加cnc有望改善保水性，以增强粘合剂和低湿度下的机械性能。我们的初步研究表明，在水凝胶中加入cnc可显著提高其机械强度、功能和吸水能力。面临的挑战是增加导电凝胶粘合剂的保湿性（以及性能寿命和再现性），同时不影响其他凝胶性能，如电化学、粘附性、强度和弹性。我们将生产和表征功能化CNC，并测量混合凝胶性能作为CNC负载和类型的函数，包括：保水性/膨胀性，流变性，透明度，粘合剂/机械测试。我们将与3M加拿大的研发中心合作，进行应用测试和原型设计，以确保开发的配方与工业相关。这项研究将确定在3M的凝胶粘合剂中添加cnc的主要好处，并且开发的知识产权将在加拿大开发。我们致力于帮助加拿大林业部门，这项工作将通过确保我们保持在CNC发现和开发新材料的前沿，为加拿大创造就业机会，对加拿大具有重要的经济意义。