Research data for manuscript: ‘The role of density fluctuations and interfacial energy in controlling the dynamics of the polymers confined within the anodic aluminum oxide’

The dataset contains raw dielectric and calorimetric measurement data, presented entitled “The Role of Density Fluctuations and Interfacial Energy in Controlling the Dynamics of the Polymers Confined within the Anodic Aluminum Oxide”. In this work, we investigated the effect of confinement on the behaviour of a series of three polymer brushes based on poly(mercaptopropylmethylsiloxane, PMMS), grafted with various acrylates monomers of varying lengths of alkyl chain infiltrated within AAO mesoporous membranes of d = 10 nm, and have been studied with the use of broadband dielectric spectroscopy (BDS) as well as differential scanning calorimetry (DSC). The collected results were compiled with the data available in the literature for the other confined polymers to establish correlations between the glass transition depression (a difference in the glass transition temperatures between the bulk and infiltrated polymers defined as ΔTg,) and two (macroscopic) properties of the bulk materials, i.e., interfacial energy (γSL, quantifying the polymer/substrate interfacial interactions) and the pressure coefficient of the glass transition temperature (dTg/dp, describing the sensitivity of the segmental process to density fluctuations) to get new insights to a general relation allowing quantifying the magnitude of the confinement effect.

本数据集包含原始介电与量热测量数据，相关研究题为《密度涨落与界面能在调控阳极氧化铝孔道内受限聚合物动力学中的作用》（The Role of Density Fluctuations and Interfacial Energy in Controlling the Dynamics of the Polymers Confined within the Anodic Aluminum Oxide）。本研究针对一系列三种以聚(巯基丙基甲基硅氧烷，PMMS)为基底的聚合物刷展开受限行为研究：这些聚合物刷接枝了烷基链长度各异的多种丙烯酸酯单体，并被浸润于孔径d=10 nm的阳极氧化铝（AAO）介孔膜中，随后采用宽频介电谱（broadband dielectric spectroscopy, BDS）与差示扫描量热法（differential scanning calorimetry, DSC）完成表征。本研究将实测结果与现有文献中其他受限聚合物的相关数据进行整合，旨在建立玻璃化转变温度降幅（ΔTg，定义为本体聚合物与浸润受限聚合物的玻璃化转变温度差值）与本体材料两项宏观特性之间的关联——即量化聚合物/基底界面相互作用的界面能（γSL），以及描述链段运动对密度涨落敏感性的玻璃化转变温度压力系数（dTg/dp），以期为构建可量化受限效应强度的普适性关系提供新的科学认知。