Femtosecond laser-induced scratch ablation as an efficient new method to evaluate the self-healing behavior of supramolecular polymers

2019 ◽  
Vol 7 (5) ◽  
pp. 2148-2155 ◽  
Author(s):  
Marcus Abend ◽  
Clemens Kunz ◽  
Steffi Stumpf ◽  
Stephan Gräf ◽  
Stefan Zechel ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
The Self ◽  
New Method ◽  
Supramolecular Polymers ◽  
Self Healing ◽  
Scratch Testing ◽  
3D Profilometry

A supramolecular self-healing metallopolymer was ablated with a femtosecond laser to realize reproducible scratches. These are studied using 3D-profilometry in combination with scratch testing experiments. Healing efficiencies are determined..

Influence of Aspartate Moieties on the Self-Healing Behavior of Histidine-Rich Supramolecular Polymers

2018 ◽  
Vol 39 (17) ◽  
pp. 1700742 ◽  
Author(s):  
Marcel Enke ◽  
Lukas Köps ◽  
Stefan Zechel ◽  
Johannes C. Brendel ◽  
Jürgen Vitz ◽  
...  
Keyword(s):  
The Self ◽  
Supramolecular Polymers ◽  
Self Healing

Effects of physical aging on the self‐healing, shape memory, and crystallization behaviors of hydrogen‐bonded supramolecular polymers

2021 ◽  
Author(s):  
Jiantao Wang ◽  
Jianna Bao ◽  
Jiale Zhou ◽  
Xiang Li ◽  
Xianming Zhang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Physical Aging ◽  
The Self ◽  
Supramolecular Polymers ◽  
Self Healing ◽  
Crystallization Behaviors ◽  
Hydrogen Bonded

scholarly journals In-depth characterization of self-healing polymers based on π–π nteractions

2021 ◽  
Vol 17 ◽  
pp. 2496-2504
Author(s):  
Josefine Meurer ◽  
Julian Hniopek ◽  
Johannes Ahner ◽  
Michael Schmitt ◽  
Jürgen Popp ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Mechanical Damage ◽  
Analytical Techniques ◽  
The Self ◽  
Supramolecular Interactions ◽  
Supramolecular Polymers ◽  
Self Healing ◽  
Noncovalent Bonds ◽  
Tetracarboxylic Dianhydride

The self-healing behavior of two supramolecular polymers based on π–π-interactions featuring different polymer backbones is presented. For this purpose, these polymers were synthesized utilizing a polycondensation of a perylene tetracarboxylic dianhydride with polyether-based diamines and the resulting materials were investigated using various analytical techniques. Thus, the molecular structure of the polymers could be correlated with the ability for self-healing. Moreover, the mechanical behavior was studied using rheology. The activation of the supramolecular interactions results in a breaking of these noncovalent bonds, which was investigated using IR spectroscopy, leading to a sufficient increase in mobility and, finally, a healing of the mechanical damage. This scratch-healing behavior was also quantified in detail using an indenter.

Review of The Self-Healing Personality: Why Some People Achieve Health and Others Succumb to Illness.

1992 ◽  
Vol 37 (1) ◽  
pp. 88-88
Author(s):  
Beth Leedham
Keyword(s):  
The Self ◽  
Self Healing

Effect of epoxy resin healing agent viscosity on the self-healing performance of capsules reinforced polymer composite

2021 ◽  
Vol 28 (4) ◽  
Author(s):  
Raj Kumar Pittala ◽  
Satish Ben B ◽  
Avinash Ben B
Keyword(s):  
Epoxy Resin ◽  
Polymer Composite ◽  
The Self ◽  
Self Healing ◽  
Reinforced Polymer ◽  
Healing Agent

scholarly journals Effect of fly ash on the self-healing capability of cementitious materials with crystalline admixture under different conditions

AIP Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 075018
Author(s):  
Xi Wang ◽  
Hao Qiao ◽  
Ziwei Zhang ◽  
Shiying Tang ◽  
Shengjun Liu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Cementitious Materials ◽  
The Self ◽  
Self Healing

scholarly journals The Effect of Superabsorbent Polymers on the Microstructure and Self-Healing Properties of Cementitious-Based Composite Materials

2021 ◽  
Vol 11 (2) ◽  
pp. 700
Author(s):  
Irene A. Kanellopoulou ◽  
Ioannis A. Kartsonakis ◽  
Costas A. Charitidis
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Hybrid Structure ◽  
The Self ◽  
Self Healing ◽  
Cementitious Composite ◽  
Superabsorbent Polymers ◽  
Porosity Reduction ◽  
Environment Control ◽  
The Impact

Cementitious structures have prevailed worldwide and are expected to exhibit further growth in the future. Nevertheless, cement cracking is an issue that needs to be addressed in order to enhance structure durability and sustainability especially when exposed to aggressive environments. The purpose of this work was to examine the impact of the Superabsorbent Polymers (SAPs) incorporation into cementitious composite materials (mortars) with respect to their structure (hybrid structure consisting of organic core—inorganic shell) and evaluate the microstructure and self-healing properties of the obtained mortars. The applied SAPs were tailored to maintain their functionality in the cementitious environment. Control and mortar/SAPs specimens with two different SAPs concentrations (1 and 2% bwoc) were molded and their mechanical properties were determined according to EN 196-1, while their microstructure and self-healing behavior were evaluated via microCT. Compressive strength, a key property for mortars, which often degrades with SAPs incorporation, in this work, practically remained intact for all specimens. This is coherent with the porosity reduction and the narrower range of pore size distribution for the mortar/SAPs specimens as determined via microCT. Moreover, the self-healing behavior of mortar-SAPs specimens was enhanced up to 60% compared to control specimens. Conclusively, the overall SAPs functionality in cementitious-based materials was optimized.

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