CAREER: Online Estimation of MWD of Polymer Melts Using Broad-Band Dielectric Measurements: Sensor Development and Control

提案标题：CAROR：使用宽带介电测量在线估计聚合物熔体的相对分子质量分布：传感器开发和控制建议编号：CTS-9875462首席研究员：Mikhail Skliar研究所：犹他州大学拟议研究计划的重点是开发基于宽带介电测量的传感技术和基于模型反转的识别方法，以在线推断聚合物熔体的分子量分布(MWD)。研究的最终目标是开发新的聚合物加工技术，通过在挤出和成型过程中改变加工条件来在线定制最终产品的性能。具有可控场穿透深度的倒置条纹效应微电介质传感是一种测量材料垂直于界面方向的空间分辨特性的新方法。在提出的方法中，根据介电测量在线推断MWD的方法将基于电磁场中聚合物弛豫的理论模型和统计相关方法。在理论和实验研究之后，将开发先进的过程控制系统，该系统将能够通过在加工过程中改变条件来实现在线聚合物定制。该教育计划旨在创建一个平衡的本科过程控制课程，其中包括在实验室环境中实施实际控制系统的基于项目的实践经验。

Proposal Title: CAREER: Online Estimation of MWD of Polymer Melts Using Broad-Band Dielectric Measurements: Sensor Development and ControlProposal Number: CTS-9875462Principal Investigator: Mikhail SkliarInstitution: University of UtahThe focus of the proposed research program is on the development of sensing technology and model-inversion based identification methods to infer online the molecular weight distribution (MWD) of polymer melts based on broad-band dielectric measurements. The ultimate goal of the research is to develop new polymer processing technology for online customization of the properties of the final product by varying the processing conditions during extrusion and molding. The inverted fringe-effect microdielectric sensing with controlled depth of field penetration is a novel approach for measuring spatially resolved properties of a material in a direction normal to the interface. In the proposed approach, methods for inferring MWD online from dielectric measurements will be based on theoretical modeling of polymer relaxation in electromagnetic fields and on statistical correlation methods. Theoretical and experimental studies will be followed by the development of advanced process control systems, which will enable online polymer customization by varying conditions during processing. The educational program is aimed at creating a balanced undergraduate process control curriculum, which includes project-based hands-on experience in implementing practical control systems in laboratory settings.