A novel approach for the quantification of scratch healing of polymers

Abend, Marcus; Tianis, Lukas; Kunz, Clemens; Zechel, Stefan; Gräf, Stephan; Müller, Frank A.; Schubert, Ulrich S.; Hager, Martin D.

doi:10.1016/j.polymertesting.2020.106699

Cited by 9 publications

(9 citation statements)

References 37 publications

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“…Finally, the healing behavior of the polymers was studied in detail. For this purpose, an established method was applied enabling the detailed analysis of the scratch healing behavior by investigating the volume of the scratch [ 31 – 32 ]. A scratch was introduced into the material by using an indenter, afterwards, the sample was twisted to 90° and the profile was measured using an indenter resulting in the possibility to calculate the volume of the scratch.…”

Section: Resultsmentioning

confidence: 99%

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

Meurer¹,

Hniopek²,

Ahner³

et al. 2021

Beilstein J. Org. Chem.

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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.

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Section: Resultsmentioning

confidence: 99%

“… a The healing efficiency was calculated based on a literature reported equation [ 31 – 32 ]. b The third scratch was healed at 80 °C for 18 h and afterwards, it was further healed again for 18 h at 80 °C.…”

Section: Resultsmentioning

confidence: 99%

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

Meurer¹,

Hniopek²,

Ahner³

et al. 2021

Beilstein J. Org. Chem.

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“…To investigate the self‐healing abilities in a comparable manner, an established experimental setup and evaluation procedure based on tactile measurements was applied. [ 35,39 ] The healing efficiency (H eff ) could be calculated based on the volume of the initial scratch (V I ) compared to the volume after certain healing steps (V H ) (Equation ).

H_{e f f} = 100 % (1 - \frac{V_{H}}{V_{I}})

…”

Section: Methodsmentioning

confidence: 99%

Novel Biobased Self‐Healing Ionomers Derived from Itaconic Acid Derivates

Meurer

Hniopek

Dahlke

et al. 2020

Macromol. Rapid Commun.

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This article presents novel biobased ionomers featuring self‐healing abilities. These smart materials are synthesized from itaconic acid derivates. Large quantities of itaconic acid can be produced from diverse biomass like corn, rice, and others. This study presents a comprehensive investigation of their thermal and mechanical properties via differential scanning calorimetry (DSC), thermo gravimetric analysis (TGA), and FT‐Raman and FT‐IR measurements as well as dynamic mechanic analysis. Within all these measurements, different kinds of structure‐property relationships could be derived from these measurements. For example, the proportion of ionic groups enormously influences the self‐healing efficiency. The investigation of the self‐healing abilities reveals healing efficiencies up to 99% in 2 h at 90 °C for the itaconic acid based ionomer with the lowest ionic content.

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“…In a more comprehensive investigation, the same research group extended their analysis by applying laser scanning microscopy (LSM) to accurately quantify the incremental healing process of the polymer under examination. 70,71…”

Section: Advances In Surface Scratch-repairing Technologymentioning

confidence: 99%