Quantification of the scratch-healing efficiency for novel zwitterionic polymers

Dahlke, Jan; Kimmig, Julian; Abend, Marcus; Zechel, Stefan; Vitz, Jürgen; Schubert, Ulrich S.; Hager, Martin D.

doi:10.1038/s41427-019-0190-2

Cited by 23 publications

(25 citation statements)

References 66 publications

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“…[ 32 ] Consequently, this type of polymer is highly suitable for the design of self‐healing materials. [ 33–35 ]…”

Section: Methodsmentioning

confidence: 99%

“…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%

“…A good way to determine the hardness of material is the Vickers hardness test. The test was performed analog to literature, [ 35 ] for the annealed polymer and ionomers. A summary and comparison of the calculated values for the Vickers hardness is presented in Figure S28.…”

Section: Methodsmentioning

confidence: 99%

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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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“…[ 32 ] Consequently, this type of polymer is highly suitable for the design of self‐healing materials. [ 33–35 ]…”

Section: Methodsmentioning

confidence: 99%

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

…”

Section: Methodsmentioning

confidence: 99%

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Novel Biobased Self‐Healing Ionomers Derived from Itaconic Acid Derivates

Meurer

Hniopek

Dahlke

et al. 2020

Macromol. Rapid Commun.

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“…[81,306] The most common technique is the use of the tensile testing to break the specimens at origin and after certain hourly healing intervals and quantify the toughness of these specimens to determine the self-healing efficiency of the polymer during the design process. [7,209] Lesser-known techniques involve using a tapered cantilever beam and calculating the K ic before and after selfhealing, [307] scratching the sample with a fixed force/depth and monitoring the depth of the scratch over time, [308,309] and even dropping or shooting a ball into the polymer sample and calculating the absorbed impact energy. [310] The self-testing efficiencies based on these mechanical tests can be fed into the training set (data) of the self-healing algorithm.…”

Section: Self-healing and Self-testingmentioning

confidence: 99%

Progress and Roadmap for Intelligent Self‐Healing Materials in Autonomous Robotics

et al. 2020

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self-repair in order to survive and thrive. Soft to hard tissues can self-regenerate when injured, including the skin and bones. [6] Some of the living tissues, such as nails and bones, can even continuously remodeling themselves, removing the damaged tissues unintentionally and replaced by newly grown tissues. However, unlike regenerative and remodeling capabilities in nature, robots are made from nonliving synthetic materials such as polymers and metals. Hence, as we develop robots to have greater autonomy and capabilities, having the ability to self-heal or self-repair is becoming more critical, if not, essential, especially from an environmental sustainability point of view. [2,[7][8][9][10][11] The term self-healing materials, also often referred to as self-mending or selfrepairing materials, are materials that can regain some or most of its original material properties when damaged. In synthetic materials, the self-healing materials repair their damage without regenerative origins. As these selfhealing materials undergo self-repair, they regain their original intended functions through the recovery of the desired material properties, without an increase in original mass.As the number of self-healing materials is growing at a rapid clip, we first establish a brief history in this review to help the reader gain a broader perspective on self-healing materials. We emphasize on self-healing materials that recover their mechanical properties, because mechanical properties often dictate the possible applications. Figure 1 highlights the various selfhealing materials from high modulus to low modulus materials that can be used for robotic applications.There are two broad classifications for self-healing materials: a) autonomic versus nonautonomic self-healing materials; b) intrinsic versus extrinsic self-healing. [8] These self-healing materials can recover their properties either autonomously, i.e., without significant external intervention, much like human tissues; or they can also heal with external intervention, such as when some external environment changes cause temperature increment or via various triggers such as mechanical stimuli. Intrinsic self-healing materials do not need external healing agents, while extrinsic self-healing materials contain external healing agents for the healing of the matrix materials. In addition to those classifications, we will provide new insights on classifying these materials further into this review.In Section 2, we discuss various types of smart biomimetic robots where self-healing materials can be beneficial. Section 3 Robots are increasingly assisting humans in performing various tasks. Like special agents with elite skills, they can venture to distant locations and adverse environments, such as the deep sea and outer space. Micro/nanobots can also act as intrabody agents for healthcare applications. Self-healing materials that can autonomously perform repair functions are useful to address the unpredictability of the environment and the increasing drive toward the autonom...

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“…Auf Basis ionischer Wechselwirkungen berichtet Hagers Gruppe von neuen selbstheilenden Polymethacrylaten mit zwitterionischen Seitenketten. 65)…”

Section: Materialbruch Und Selbstheilungunclassified

Trendbericht: Makromolekulare Chemie

Gröschel¹,

Träger²,

Brendel³

2021

Nachr Chem

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Wie das letzte Jahr zeigte, ist die Forschung über Polymere und ihre Aggregate wichtig, um die Coronapandemie einzudämmen. Darüber hinaus gab es in der makromolekularen Forschung eine Vielzahl an Neuerungen und wegweisende Entwicklungen, etwa bei Materialien und polymerbasierter Elektronik. Dieser Trendbericht umfasst nicht nur Highlights, sondern präsentiert auch die Forschungsinteressen des akademischen Nachwuchses.

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Quantification of the scratch-healing efficiency for novel zwitterionic polymers

Cited by 23 publications

References 66 publications

Novel Biobased Self‐Healing Ionomers Derived from Itaconic Acid Derivates

Novel Biobased Self‐Healing Ionomers Derived from Itaconic Acid Derivates

Progress and Roadmap for Intelligent Self‐Healing Materials in Autonomous Robotics

Trendbericht: Makromolekulare Chemie

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