聚合物Janus粒子的固/液界面吸附行为及其在分散染料领域的应用

项目名称： 聚合物Janus粒子的固/液界面吸附行为及其在分散染料领域的应用

项目编号： No.21303013

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 董霞

作者单位： 东华大学

项目金额： 25万元

中文摘要： 分散体系中小分子表面活性剂在固/液界面形成的吸附层薄，双亲共聚物又常因胶束动力学冻结导致界面吸附效率低，在染整工业中表现出分散染料聚酯染色中分散剂用量高、环境压力大等问题。通过控制聚合物Janus粒子微结构（尺寸、化学组成及表面化学分区等），可避免因疏水链缠结引起的胶束冻结。本研究拟选择分散染料为研究对象，设计合成系列三嵌段共聚物，采用多隔段胶束交联法制备具有不同微结构的聚合物Janus粒子，揭示其结构的微观调控机制；通过研究Janus粒子的溶液行为、固/液界面吸附行为以及对分散染料的分散稳定作用，阐明Janus粒子微结构对其聚集行为、吸附行为的影响机制，建立粒子结构－界面吸附层结构－染料分散稳定性间的关系，实现结构与性能的优化。本项目的研究不仅为提高聚合物的界面吸附效率和解决聚酯染色的生态问题提供新思路和新方法，还可为丰富聚合物界面吸附行为理论提供可靠的依据。

中文关键词： 嵌段共聚物；聚合物自组装；Janus粒子；表面活性；分散染料

英文摘要： Abstract: The adsorption adlayer of small surfactants at the solid-liquid interface cannot be thick enough in dispersion stability, and the interfacial adsorption efficiency of the amphiphilic copolymers is relatively low due to their kinetically frozen micelles, which results in high consumption of surfactant and serious environmental pollution during polyester dyeing with disperse dyes in dyeing and finishing industry. The frozen kinetics caused by the entanglement of the hydrophobic chain can be avoided through the control of the micro-structure (size, chemical composition, and Janus balance, etc.) of the polymeric Janus particles. In this study, series of triblock polymers will be designed and synthesized, and polymeric Janus particles with different sizes and micro-structure will be prepared by cross-linking of compartments within precisely defined multicompartments micelles (MCMs) through the revelation of their micro-structure regulation mechanism. Common disperse dyes will be selected as the object, the solution behavior and the solid-liquid interfacial adsorption behavior of Janus particles, and their dispersion capacity for disperse dyes will be investigated, to clarify the mechanism of the micro-structure of Janus particles influencing their self-aggregation behavior and adsorption behavior. The struc

英文关键词： Block polymers；self-assembly of polymers；Janus particles；surface activity；disperse dyes