Adhesive and healable supramolecular comb-polymers

IF 4.5 3区 工程技术 Q1 CHEMISTRY, APPLIED
Zhenping Shi , Matthew Hyder , Alarqam Z. Tareq , Ann M. Chippindale , James A. Cooper , Josephine L. Harries , Wayne Hayes
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引用次数: 0

Abstract

A series of supramolecular comb polymers (SCPs) with adhesive and healable characteristics have been generated through the copolymerisation of methacrylate monomers featuring aromatic amide functionalities with lauryl methacrylate. By varying the amide functionality and loading of the supramolecular monomers, the properties of the resulting SCPs can be tailored, ultimately providing stable films at room temperature. As the loading of the amide-bearing monomer was increased, the phase separation between the hard and soft domains was enhanced, promoting larger hard-domain aggregation, as observed via atomic force microscopy (AFM). The mechanical properties of the SCPs correlated to the loading of the amide-bearing monomers, by increasing the mol% incorporation the resulting SCPs transition from possessing high strain to high ultimate tensile strength (UTS) and Young's modulus (YM). Over several re-adhesion cycles, the SCPs were shown to retain their shear strength when thermally adhered to both glass and aluminium substrates. Additionally, the SCPs exhibited healable properties at elevated temperatures (> 45 °C) allowing for the recovery of mechanical properties post-damage.

Abstract Image

可粘合、可愈合的超分子组合聚合物
通过具有芳香族酰胺官能团的甲基丙烯酸酯单体与甲基丙烯酸十二烷基酯的共聚,产生了一系列具有粘合和可愈合特性的超分子梳状聚合物(SCP)。通过改变超分子单体的酰胺官能度和负载量,可以定制所生成的 SCP 的特性,最终在室温下形成稳定的薄膜。通过原子力显微镜(AFM)观察到,随着含酰胺单体负载量的增加,硬域和软域之间的相分离得到加强,从而促进了更大的硬域聚集。SCP 的机械性能与含酰胺单体的负载量相关,通过增加含酰胺单体的摩尔百分比,产生的 SCP 从高应变过渡到高极限拉伸强度(UTS)和杨氏模量(YM)。经过数次再粘合循环,SCP 在热粘合到玻璃和铝基底上时仍能保持其剪切强度。此外,SCP 在高温(45 °C)下表现出可愈合的特性,可恢复损伤后的机械特性。
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来源期刊
Reactive & Functional Polymers
Reactive & Functional Polymers 工程技术-高分子科学
CiteScore
8.90
自引率
5.90%
发文量
259
审稿时长
27 days
期刊介绍: Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.
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