Visible light emission to probe inter-particle diffusion in latex films

可见光发射探测乳胶膜中的颗粒间扩散

• 批准号: 451545-2013
• 负责人: Duhamel, Jean
• 金额: $ 3.03万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=554738
• 关键词: Visible; light; emission; probe; inter

The primary purpose of paints is to protect a substrate with a continuous polymer film. The polymer film is typically obtained by applying a waterborne latex solution onto the substrate. As the water evaporates, the latex particles come into contact allowing for polymer chains to diffuse from one latex particle to another, until a homogeneous and continuous polymer film is being generated. The diffusion of chains between latex particles is influenced by a number of parameters such as the type of polymer, the solvent, dispersants, and/or polymer composition used to prepare the latex. A technique capable of providing a direct measure of film formation would be extremely valuable to the formulation chemist to directly correlate the variables used to design the latex particles used to generate a film or enhance inter-particle diffusion. For the application's chemist, a direct measure of film formation would help the selection of formulation additives that would optimize film properties.

涂料的主要目的是用连续的聚合物膜保护基材。 聚合物膜通常通过将水性胶乳溶液施加到基底上来获得。 随着水蒸发，胶乳颗粒接触，允许聚合物链从一个胶乳颗粒扩散到另一个胶乳颗粒，直到产生均匀和连续的聚合物膜。 胶乳颗粒之间的链扩散受许多参数影响，例如用于制备胶乳的聚合物类型、溶剂、分散剂和/或聚合物组合物。 能够提供膜形成的直接测量的技术对于制剂化学家将是极其有价值的，以直接关联用于设计用于产生膜或增强颗粒间扩散的胶乳颗粒的变量。对于应用的化学家来说，直接测量成膜将有助于选择配方添加剂，从而优化薄膜性能。