Phase behavior of polymers containing ether groups in carbon dioxide
Phase behavior of polymers containing ether groups in carbon dioxide
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DOI：
10.1016/s0896-8446(01)00111-5
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发表时间：
2002-02-01
影响因子：
3.9
通讯作者：
Beckman, EJ
中科院分区：
文献类型：
--
作者：
Drohmann, C;Beckman, EJ
研究了不同组成和链长的聚醚在CO2中的溶解度。单体单元的性质、聚合度、端基效应、组成和温度显著影响溶解度，从而影响溶解度所需的CO2压力。通常，发现环氧丙烷的聚合物比环氧乙烷或四氢呋喃的类似物更“亲CO2”。醚的嵌段共聚物的相行为受组成和拓扑结构（嵌段与无规，嵌段排列）的影响。聚醚中的醚氧似乎通过与CO2的特定相互作用增强了这种聚合物的溶解度（相对于简单的烃），但只有当醚氧处于容易接近的位置时。(C)2002 Elsevier Science B.V.保留所有权利。
Polyethers of different composition and chain length were investigated with regard to their solubility in CO2 The nature of the monomeric unit, the degree of polymerization, the endgroup effect, the composition and the temperature significantly influence the solubility and thus the CO2 pressures required for miscibility. In general, it was found that polymers of propylene oxide are more 'CO2-philic' than analogs of either ethylene oxide or tetra hydrofuran. The phase behavior of block copolymers of the ethers is influenced by both composition and topology (blocky versus random, block arrangement). It appears that the ether oxygens in polyethers enhance the solubility of such polymers (relative to simple hydrocarbons) through specific interactions with CO2 but only if the ether oxygen is in a readily accessible position. (C) 2002 Elsevier Science B.V. All rights reserved.