Enhancing Latex-based Coatings and Pressure Sensitive Adhesives with Carboxylated Cellulose Nanocrystals

这项提议寻求使用羧化纤维素纳米晶(CNCS)开发基于乳胶的压敏胶粘剂产品，CNCS是从具有强烈加拿大特色的木浆中提取的可持续纳米颗粒。具体地说，我们的目标是通过在聚合物合成过程中或合成后加入羧化碳纳米管作为乳胶的增强剂。我们推测，在胶乳中加入羧化碳纳米管可以改善胶乳的微观结构，提高胶乳的整体性能。最终，我们将致力于用淀粉和/或其他植物来源的单体取代石化衍生的单体，从而开发出具有大量生物基含量的压敏胶粘剂。Anomera Inc.是全球最大的羧化CNCS生产商，也是唯一一家使用100%森林管理认证加拿大森林和获得专利的环保方法的生产商。虽然他们的CNCs目前用于化妆品和复合材料应用，但他们希望扩大可以用他们的材料生产的增值产品的范围。巴斯夫正在为工业规模的乳胶配方提供支持，而Rayonier AdvancedMaterial则代表在纸板应用的粘合剂方面寻求帮助的最终用户。碳纳米管具有机械强度高、长径比大、无毒、可生物降解等优点，具有潜在的应用前景，但含碳纳米管的商品化产品的开发还处于起步阶段，许多聚合物的应用还有待探索。除了压敏粘合剂外，乳液聚合物还被广泛应用于涂料、薄膜、涂料和橡胶等领域，因此这项研究可以很容易地转化为CNCS的新应用途径。Dubé(环境友好型聚合物反应工程)、坎宁安和香槟(聚合物合成和接枝)以及克兰斯顿(CNCS的制备、修饰和表征)研究小组的专业知识之间的协同作用，将使具有许多加拿大工业受体的新型商业产品得以快速开发。这项研究将确保加拿大在国家科学研究中心的科学发现方面保持领先地位。

This proposal seeks to develop latex-based pressure-sensitive adhesive products using carboxylated cellulosenanocrystals (CNCs) which are sustainable nanoparticles derived from wood pulp with a strong Canadianpresence. Specifically, we aim to use carboxylated CNCs as an enhancement agent in latexes by adding themeither during or post polymer synthesis. We hypothesize that incorporating carboxylated CNCs will modify themicrostructural properties of the latex and improve their overall performance. Ultimately, we will worktowards pressure-sensitive adhesives with significant bio-based content by replacing petrochemical-derivedmonomers with starch, and/or other monomers from plant sources. Anomera Inc. is the largest producer ofcarboxylated CNCs worldwide and the only producer that uses 100% Forest Stewardship certified Canadianforest and a patented eco-friendly method. While their CNCs are currently used in cosmetic and compositeapplications they would like to extend the range of value-added products that can be produced from theirmaterial. BASF is providing support with industrial-scale latex formulations, while Rayonier AdvancedMaterials represents an end-user seeking assistance with adhesives for paperboard applications. CNCs havemany potential applications due to their high mechanical strength, large aspect ratio, non-toxicity andbiodegradability; however, the development of commercial products containing CNCs is still in its infancy andmany polymer applications have yet to be explored. In addition to pressure-sensitive adhesives, latex polymers are also used in a broad range of applications including coatings, thin films, paints, and rubbers such that this research can easily be translated to open new application avenues for CNCs. The synergy between expertise in the Dubé (environmentally-benign polymer reaction engineering), Cunningham and Champagne (polymer synthesis and grafting), and Cranston (preparation, modification and characterization of CNCs) research groups will allow for rapid development of novel commercial products with many Canadian industrial receptors. This research will ensure that Canada remains at the forefront of scientific discoveries for CNCs.