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亲二氧化碳碳氢聚合物及其应用
  • 期刊名称:化学进展
  • 时间:0
  • 页码:583-587
  • 语言:中文
  • 分类:O632[理学—高分子化学;理学—化学] O633.1[理学—高分子化学;理学—化学]
  • 作者机构:[1]华中科技大学化学与化工学院材料化学与服役失效湖北省重点实验室,武汉430074
  • 相关基金:国家自然科学基金项目(No.20774032)资助
  • 相关项目:亲二氧化碳碳氢聚合物的合成及其应用
中文摘要:

超临界二氧化碳(scCO2)作为一种新型“绿色溶剂”,具有无毒、不可燃、易于分离以及来源丰富等特点,有望替代传统的挥发性有机溶剂。但scCO2是很弱的溶剂,大部分极性分子和高分子量聚合物在其中的溶解度都很低,限制了其工业应用。目前,应用scCO2的一个挑战就是寻找有效的适用于scCO2的表面活性剂、配合物和相转移剂等。本文综述了亲二氧化碳聚合物的研究进展,从链段柔顺性和自由体积、溶质/溶质相互作用、溶质/CO2相互作用三个方面介绍了亲二氧化碳碳氢化合物的设计原则,并介绍了亲二氧化碳聚合物在制备表面活性剂、增溶染料和催化剂等方面的相关应用。

英文摘要:

Supercritical carbon dioxide (scCO2) is considered to be a new "green solvent", because it is nontoxic, nonflammable, easy separation and readily available in high purity from a number of sources. ScCO2 has been shown to be a promising alternative solvent for conventional volatile organic solvents. A significant technical barrier with using scCO2 is that it is a relatively weak solvent of important classes of materials which tend to exhibit low solubility in scCO2 including polar molecules and high-molecular weight polymers, which limits its industrial applications. Currently, in order to expand its applications, the discovery of inexpensive CO2-soluble materials or "CO2-philes" has been an important challenge. There has been considerable research effort focused on discovering inexpensive CO2-philic polymers from whieh inexpensive CO2-philic surfactants, ligands, and phase transfer agents could be developed. The present paper reviews the recent progress of CO2-philie polymers and their design principles based on the molecular characteristics (flexibility and free volume, weak self-interactions of solutes and powerful interactions between CO2 and solutes). And the applications of CO2-philic polymers such as surfactant preparation, solubilisation of catalysts and dyes will also be discussed.

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