Interactive Modes of Polymer Chromatography
Interactive Modes of Polymer Chromatography
复制标题
聚合物色谱的交互模式
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
B. Trathnigg
中科院分区：
文献类型：
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作者：
H. Pasch;B. Trathnigg
相互作用色谱法是基于溶质分子通过与固定相表面（包括孔表面）的相互作用而保持的。这种相互作用可以是由于吸附、疏水、极性或离子相互作用或色散力。固定相对溶质分子的间歇捕获和释放是由两种基本不同的机制或它们的某些组合控制的。对于吸附-解吸现象，突变过程是导致吸附或解吸的关键步骤。这一过程的典型特征是分子从表面脱附，如果分子具有足够的活化能，导致必要的重排或化学或物理键的破裂，那么分子就会突然脱附。完全不同的效果是扩散控制的吸附-解吸动力学，当分子扩散进入和离开局部区域b[1]时，变化才逐渐发生。
Interaction chromatography is based on the retention of solute molecules by interaction with the surface of the stationary phase including the pore surface. This interaction can be due to adsorption, hydrophobic, polar or ionic interactions or dispersive forces. Intermittent capture and release of solute molecules by the stationary phase are controlled by two basically different mechanisms or some combinations thereof. In regard to adsorption-desorption phenomena, an abrupt process is the critical step leading to sorption or desorption. This process is typified by molecular desorption from surfaces where molecules can detach, and then do so suddenly, if they possess sufficient activation energy to cause the necessary rearrangement or rupture of chemical or physical bonding. Quite different in effect are the diffusion-controlled sorption-desorption kinetics where a change occurs only gradually as molecules diffuse in and out of localized regions [1].