超临界CO2-含氟丙烯酸酯聚合反应体系分子间相互作用机制研究

项目名称： 超临界CO2-含氟丙烯酸酯聚合反应体系分子间相互作用机制研究

项目编号： No.21306111

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 化学工业

项目作者： 陈建刚

作者单位： 陕西师范大学

项目金额： 25万元

中文摘要： 超临界CO2（scCO2）可调节的溶剂性能赋予其在含氟聚合物合成方面独特的理论意义和应用潜力，然而scCO2体系复杂多变的分子间相互作用以及当前高压原位监测技术手段的不足，给这一绿色技术的研究和应用带来了挑战。本项目将立足于申请者前期研究中揭示的scCO2体系变化过程中分子间相互作用动态诱导的分子结构或微环境变化及其与原位光谱之间的关联性，采用自主研制的高压原位中红外/近红外光谱监测系统和借助于化学计算/模拟技术，针对性地研究一系列含氟丙烯酸酯单体-scCO2聚合体系分子间相互作用及其机制，揭示由分子间相互作用动态诱导的溶剂效应对含氟单体-scCO2自由基聚合体系的相行为以及聚合反应动力学过程的影响规律，探索在scCO2中采用均相溶液聚合合成含氟聚合物的可行性及限度。本项目在scCO2理论思辨、技术创新及应用实践方面的尝试与探索，将为含氟聚合物的绿色合成提供理论依据和方法基础。

中文关键词： 超临界二氧化碳；含氟单体/寡聚物/聚合物；分子间相互作用；高压原位光谱；可控自由基聚合

英文摘要： The adjustable solvent properties endow supercritical carbon dioxide (scCO2) unique significance in both theoretical studies and potentially industrial application to the synthesis of the fluorinated polymers (FPs). While the complicated intermolecular interactions in scCO2 system as well as the insufficiencies in the present high-pressure in-situ monitoring systems have brought great challenges and barriers to the further research and application of scCO2 in many fields, and actually been the bottleneck in restricting the investigation of synthesizing FPs in this green medium. Based on the subtle relevance between the intermolecular-interaction-dynamically-induced variation of the microenvironment or the molecular structures, which has been demonstrated in our resent research, and the detailed vibrational absorption evolution in the scCO2 system, which will been obtained by using newly constructed high pressure in-situ FTIR/NIR monitoring technology as well as theoretical calculation/simulation method, the intermolecular interactions between a series of fluorinated acrylate monomers (FM) and scCO2 are to be deeply and systematically investigated. The intermolecular interaction mechanism in the FM-scCO2 systems is to be revealed. And the impacts of the intermolecular interaction dynamically-induced special solve

英文关键词： supercritical carbon dioxide；fluorinated monomer/oligomer/polymer；intermolecular interaction；high-pressure in-situ spectrum monitoring systemn；controlled free radical polymerization