通过关联的相互作用裁剪工业双动态网络的线性粘弹性响应

IF 3 2区 工程技术 Q2 MECHANICS
Consiglia Carillo, S. Zoellner, E. van Ruymbeke, D. Vlassopoulos
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引用次数: 1

摘要

我们研究了工业压敏胶粘剂的线性粘弹性性能,该胶粘剂包括具有纠缠的丙烯酸酯基聚合物的双网络和具有不同组成的两种类型的分子间结合(交联),永久性(环氧化物)和可逆(金属螯合物)。剪切流变学和适当修改的时间推进算法(TMA)的组合允许探测和分析不同双动态网络的行为,特别是交联的类型和数量对其线性粘弹性谱的影响。为此,将双网络的动力学与无交联和单网络(仅具有物理或化学交联)的聚合物组分的各自响应进行比较,以量化它们对弛豫机制的贡献,特别是解缠和键结合/解离过程之间的相互作用。在TMA模型的帮助下,我们还研究了黏贴寿命、多分散性和摩尔质量各自的作用。由于预测和实验数据之间的良好比较,我们提出了一个框架来调整材料参数,以获得所需的粘弹性行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Tailoring the linear viscoelastic response of industrial double dynamics networks through the interplay of associations
We investigate the linear viscoelastic properties of industrial pressure sensitive adhesives comprising double networks with an entangled acrylate-based polymer and two types of intermolecular associations (crosslinking), permanent (epoxide) and reversible (metal-chelate), having different compositions. A combination of shear rheometry and an appropriately modified version of the Time Marching Algorithm (TMA) allows to probe and analyze the behavior of the different double dynamic networks, in particular, the effects of the type and amount of crosslinks on their linear viscoelastic spectra. To this end, the dynamics of the double networks are compared with the respective individual responses of the polymeric component without crosslinks and the single networks (possessing only physical or only chemical crosslinks), in order to quantify their contributions to the relaxation mechanisms, particularly the interplay between disentanglement and bond association/dissociation processes. With the help of the TMA model, we also examine the respective roles of the lifetime of stickers, polydispersity, and molar mass. Triggered by the good comparison between predictions and experimental data, we propose a framework to tune material parameters in order to obtain a desired viscoelastic behavior.
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来源期刊
Journal of Rheology
Journal of Rheology 物理-力学
CiteScore
6.60
自引率
12.10%
发文量
100
审稿时长
1 months
期刊介绍: The Journal of Rheology, formerly the Transactions of The Society of Rheology, is published six times per year by The Society of Rheology, a member society of the American Institute of Physics, through AIP Publishing. It provides in-depth interdisciplinary coverage of theoretical and experimental issues drawn from industry and academia. The Journal of Rheology is published for professionals and students in chemistry, physics, engineering, material science, and mathematics.
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