Characterization of Dense Particle Suspensions Using Frequency-Domain Photon Migration

使用频域光子迁移表征致密颗粒悬浮液

• 批准号: 9876583
• 负责人: Eva Sevick-Muraca
• 金额: $ 29.09万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876583&HistoricalAwards=false
• 关键词: Characterization; Dense; Particle; Suspensions; Using

Abstract9876583Eva M. Sevick-Muraca, Purdue UniversityThe objective is to develop the frequency domain photon migration (FDPM) technique for assessment of particle size and particle interaction parameters in concentrated suspensions of 10% to 50% by volume. This inverse problem analysis is based upon the light diffusion in turbid, multiple scattering samples. The technique consists in launching intensity-modulated light and monitoring the phase-delay and amplitude demodulation as it propagates through the medium. The measurement can provide either particle size distribution or particle interactions. On-line measurement capabilities will be developed. Particle interactions for polymer induced depletion enhancement, electrostatic repulsion, and steric stabilization of colloidal particles will be measured. If successful, the research will provide a technique for on-line measurement of particle size distribution and particle interactions in dense suspensions of interest in paints, inks, polymer composites and other colloid mixture applications.

摘要9876583伊娃M. Sevick-Muraca，Purdue大学目的是开发频域光子迁移（FDPM）技术，用于评估10%至50%体积的浓缩悬浮液中的颗粒尺寸和颗粒相互作用参数。 这个反问题分析是基于混浊的，多散射样品中的光扩散。 该技术包括发射强度调制光，并在其通过介质传播时监测相位延迟和振幅解调。 测量可以提供颗粒尺寸分布或颗粒相互作用。 将发展在线测量能力。 将测量聚合物诱导的耗尽增强、静电排斥和胶体颗粒的空间稳定的颗粒相互作用。 如果成功，该研究将提供一种在线测量涂料，油墨，聚合物复合材料和其他胶体混合物应用中感兴趣的稠密悬浮液中颗粒尺寸分布和颗粒相互作用的技术。