Industry/University Cooperative Research Activity: Surface Interactions and Segregation of Food Powders

工业/大学合作研究活动：食品粉末的表面相互作用和分离

• 批准号: 8520370
• 负责人: Micha Peleg
• 金额: $ 3.86万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-02-01 至 1988-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8520370&HistoricalAwards=false
• 关键词: Industry; University; Cooperative; Research; Activity

This study investigates the mechanisms that are involved and development of quantitative criteria in the segregation of food powders. One of the major findings of the investigation so far is the phenomenon o migration of already adhered fines to particles of another powder. This migration depends on a selective surface affinity and can be used to remove dusts from particles and equipment by a dry process. The same phenomenon, however, can also have an adverse effect on the appearrance of powders having absorbed colorants or influence the type of distribution of fines within ordered mixtures in general. Whether there exist distribution coefficients that depend on the particle's chemical species and surface properties has not yet been established nor has the kinetics of such processes been quantified. Attrition experiments have produced a large body of data and quantitative information on the process and its kinetics. It is planned to use this information, as well as data from the literature, for testing the applicability of mathematical models and computer simulation methods.

本研究探讨了相关的机制， 制定食物隔离的定量标准 粉末. 到目前为止，调查的主要结果之一是， 已经粘附的微粒迁移到另一个微粒上的现象 粉末 这种迁移依赖于选择性表面亲和力， 用于通过干法工艺从颗粒和设备中去除灰尘。 然而，同样的现象也会对环境产生不利影响。 粉末外观吸收着色剂或影响类型 一般来说，在有序混合物中细粉的分布。 是否 存在着分布系数， 化学物种和表面性质尚未确定 也没有量化这些过程的动力学。 减员 实验产生了大量的数据和定量的 关于过程及其动力学的信息。 计划利用这一 信息，以及来自文献的数据，用于测试 数学模型和计算机模拟方法的适用性。