Quantifying and Modeling the Crystallinity of Polymers Confined in Nanopores,ACS Macro Letters

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Quantifying and Modeling the Crystallinity of Polymers Confined in Nanopores
ACS Macro Letters ( IF 5.1 ) Pub Date : 2024-07-11 , DOI: 10.1021/acsmacrolett.4c00287
Ming Wang _{1,

2} , Chun Li ₃ , Simone Napolitano ₃ , Dujin Wang _{1,

2} , Guoming Liu _{1,

2}

Affiliation

We propose a methodology to characterize the crystalline content of interfacial polymer layers in systems confined at the nanoscale level in a 2D geometry. Based on the crystallinity data of a set of polymers, we introduce a simple model to describe the gradient in crystallinity introduced by confining polymer chains in nanopores. Our model underscores the pivotal role that interfaces play in crystallization and unequivocally contradicts the existence of interfacial “dead” layers where crystallization cannot take place. Further, we verified that the organization of crystals near the pore walls resembles the macromolecular architecture of adsorbed layers, hinting at a strong interplay between crystallization and adsorption.

中文翻译：

纳米孔内聚合物结晶度的量化和建模

我们提出了一种方法来表征二维几何结构中纳米级水平系统中界面聚合物层的结晶含量。基于一组聚合物的结晶度数据，我们引入了一个简单的模型来描述通过将聚合物链限制在纳米孔中而引入的结晶度梯度。我们的模型强调了界面在结晶中发挥的关键作用，并且明确地与无法发生结晶的界面“死”层的存在相矛盾。此外，我们验证了孔壁附近晶体的组织类似于吸附层的大分子结构，暗示结晶和吸附之间存在强烈的相互作用。

更新日期：2024-07-11

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