Using in situ nanodielectric spectroscopy we demonstrate that the imbibition kinetics of cis-1,4-polyisoprene in native alumina nanopores proceeds in two time regimes both with higher effective viscosity than bulk. This finding is discussed by a microscopic picture that considers the competition from an increasing number of chains entering the pores and a decreasing number of fluctuating chain ends. The latter is a direct manifestation of increasing adsorption sites during flow. At the same time, the longest normal mode is somewhat longer than in bulk. This could reflect an increasing density of topological constraints of chains entering the pores with the longer loops formed by other chains.

中文翻译：

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纳米孔中原位聚合物吸收过程中的界面相互作用

使用原位纳米介电谱，我们证明了在天然氧化铝纳米孔中顺式-1,4-聚异戊二烯的吸收动力学在两个时间范围内均具有比本体更高的有效粘度。微观图片讨论了这一发现，该图片考虑了越来越多的进入孔的链和数量越来越少的波动链端之间的竞争。后者是流动过程中吸附位点增加的直接表现。同时，最长的普通模式要比批量模式下更长。这可能反映出进入孔隙的链的拓扑约束密度增加，而其他链形成的环越长。