Quantifying and Modeling the Crystallinity of Polymers Confined in Nanopores.

IF 5.1 Q1 POLYMER SCIENCE
ACS Macro Letters Pub Date : 2024-08-20 Epub Date: 2024-07-11 DOI:10.1021/acsmacrolett.4c00287
Ming Wang, Chun Li, Simone Napolitano, Dujin Wang, Guoming Liu
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引用次数: 0

Abstract

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.

Abstract Image

纳米孔中封闭聚合物结晶度的量化与建模。
我们提出了一种方法来表征二维几何中纳米级限制体系中界面聚合物层的结晶含量。根据一组聚合物的结晶度数据,我们引入了一个简单的模型,用于描述将聚合物链限制在纳米孔中所引入的结晶度梯度。我们的模型强调了界面在结晶过程中的关键作用,并明确否定了存在无法结晶的界面 "死 "层的说法。此外,我们还验证了孔壁附近晶体的组织结构与吸附层的大分子结构相似,这表明结晶与吸附之间存在着强烈的相互作用。
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来源期刊
CiteScore
10.40
自引率
3.40%
发文量
209
审稿时长
1 months
期刊介绍: ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science. With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.
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