Plasma Treated Titanium Dioxide Particles to Prepare stable Aqueous Suspensions for Ink Formulations

等离子体处理的二氧化钛颗粒制备用于油墨配方的稳定的水悬浮液

• 批准号: 488022-2015
• 负责人: GirardLauriault, PierreLuc
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=586134
• 关键词: Plasma; Treated; Titanium; Dioxide; Particles

The dispersion of solid particles in a liquid to form a stable suspension is an important technological challenge. A specific example of such a challenge is the dispersion of titanium dioxide nanoparticles in water for the preparation of opaque inks for the printing industry. The current approach involves the use of surfactants coupled with heavy mechanical stirring and milling to create a suspension that will be stable for a limited time. The improvement of methods to suspend titanium dioxide particles in water would allow our partner, Verajet Inkjet, to produce unique inkjet inks having a much longer lifetime and better performances that competing products. Over the recent years, our laboratory has developed a unique expertise to readily and efficiently generate stable suspensions of nanoparticles in various liquids. We use a reactive plasma, an ionized gas created by an electrical discharge, to functionalize the surface of the particles with polar functional groups and thereby improving the hydrophilic character of the particles. One of our most successful developments has been to functionalization carbon nanotubes using ethane/oxygen plasmas allowing the preparation of nanotube suspensions stable over long periods (years). The objective of this project is to apply a similar methodology to the generation of stable TiO2 suspensions. We will initially investigate the functionalization of small quantities of as-received powders using our current equipment. The main goal will be to identify the functional groups grafted on the TiO2 particles. In parallel, we will recommission our in-flight functionalization equipment (from studies carried on over the 2005-2010 period) and perform a preliminary assessment of its suitability for the intended application as it bears potential for scalability.

将固体颗粒分散在液体中以形成稳定的悬浮液是一项重要的技术挑战。 这种挑战的一个具体实例是二氧化钛纳米颗粒在水中的分散体， 用于印刷工业的不透明油墨的制备。目前的方法涉及使用表面活性剂 再加上剧烈的机械搅拌和研磨，以产生在有限时间内稳定的悬浮液。 在水中悬浮二氧化钛颗粒的方法的改进将使我们的合作伙伴Verajet 喷墨，生产独特的喷墨油墨，具有更长的寿命和更好的性能， 产品.近年来，我们的实验室已经开发出一种独特的专业知识， 在各种液体中产生纳米颗粒的稳定悬浮液。我们用一种反应性等离子体，一种电离气体 通过放电产生，用极性官能团官能化颗粒表面， 从而改善颗粒的亲水性。我们最成功的发展之一是 涉及使用乙烷/氧等离子体使碳纳米管官能化， 悬浮液长期稳定（数年）。本项目的目标是采用类似的方法， 产生稳定的TiO 2悬浮液。我们将首先研究少量的官能化 使用我们现有的设备。主要目标将是确定职能组 接枝在TiO 2颗粒上。与此同时，我们将重新启用我们的飞行中功能化设备（从 2005-2010年期间进行的研究），并对其进行初步评估。 适用于预期的应用，因为它具有可扩展性的潜力。