The journey of self-healing and shape memory polyurethanes from bench to translational research

Menon, Aishwarya V.; Madras, Giridhar; Bose, Suryasarathi

doi:10.1039/c9py00854c

Cited by 61 publications

(38 citation statements)

References 136 publications

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“…The sample can be healed with the healing efficiency of close to 100% in 6 h at 25 • C. Mended material exhibited properties equivalent to an undamaged sample (Figure 15). Polymeric materials possessing shape memory along with self-healing properties (dualfunctional) has attracted increasing interests of researchers [12,108,109]. Lai et al [96] demonstrated the effect of carboxylated hydrogen bonding and shape memory of the polymeric system to exhibit self-healing phenomena at body temperature.…”

Section: Self-healing Via Carboxylated-bonded Supramolecular Interactionsmentioning

confidence: 99%

“…This is an expensive process in both cost and time. However, inspired by nature, self-healing materials are at the forefront of recent development [5][6][7][8][9][10][11][12], and a substantial amount of research work has been dedicated to developing self-healing coatings that can restore the fundamental properties of the material [13][14][15][16][17]. By virtue of self-healing abilities, substantial improvements can be brought towards extending the functional lifetime, consistency, efficiency, and safety of coating materials.…”

Section: Introductionmentioning

confidence: 99%

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A Brief Overview on Preparation of Self-Healing Polymers and Coatings via Hydrogen Bonding Interactions

Gadwal

2020

Macromol

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Self-healing coatings or materials have received significant importance in paint, coating, and other industries, as well as in academia, because of their capability to extend materials service life, improving protection, and ensuring sustainability. This review article emphasizes significant advances accomplished in the preparation and properties of intrinsic self-healing materials exclusively based on hydrogen bonding interactions, with possible applications in coatings and adhesives. The main topic of discussion in this review article is the preparation, healing conditions, healing efficiency, and mechanical property recovery after healing. The last part of the review discusses the conclusions and outlook of self-healing materials.

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Section: Self-healing Via Carboxylated-bonded Supramolecular Interactionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Brief Overview on Preparation of Self-Healing Polymers and Coatings via Hydrogen Bonding Interactions

Gadwal

2020

Macromol

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“…Indeed, several publications have appeared that have focused on the development of materials with both self‐healing and shape memory behavior. For this purpose, reference should be made to relevant reviews describing such material combinations in polyesters, [ 32 ] polyurethanes, [ 33 ] hydrogels, [ 34 ] as well as in ionic [ 35 ] and coordination polymers. [ 36 ] Such materials are also known as multistimuli and multiresponsive polymers.…”

Section: Introductionmentioning

confidence: 99%

Tailor‐Made Functional Polymethacrylates with Dual Characteristics of Self‐Healing and Shape‐Memory Based on Dynamic Covalent Chemistry

Mondal

Behera

Voit

et al. 2020

Macro Materials & Eng

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New shape memory polymers with self‐healing behavior are obtained by thermoreversible Diels–Alder (DA) cross‐linking of a furfuryl group‐containing star‐block copolymer with 1,1′‐(methylenedi‐4,1‐phenylene)bismaleimide. The star‐block copolymer consisting of a 3‐arm polycaprolactone (PCL) core and a polyfurfuryl methacrylate shell is synthesized by reversible addition–fragmentation chain transfer (RAFT) polymerization. For this, a 3‐arm macro‐RAFT agent based on PCL is converted with an appropriate amount of furfuryl methacrylate in the presence of a radical initiator. Films of the DA network are partly insoluble at ambient temperatures. After annealing at 120 °C the films become completely soluble because of the progressing retro‐DA reaction. Evaporation of the solvent and subsequent annealing at 60 °C restores the original insoluble state of the material. By means of a scratch test and tensile tests on cut and subsequently mended samples it is shown that the retro‐DA reaction facilitates self‐healing. Additionally, the films show pronounced shape memory effects with reasonable shape recovery and fixity ratios, which are attributed to the melting and crystallization of the PCL phase.

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“…Self‐healing and shape memory polymers, and their combination, are a branch of advanced materials with smart performances that are gaining attention due to the prolonged material life and the ability to obtain the initial shape from a temporary shape, respectively. [ 2–5 ] The primary shape memory and self‐healing studies were conducted on polyurethane [ 6 ] and poly(ε‐caprolactone) systems. [ 7–9 ] However, over the years, the individual studies on only shape memory or self‐healing materials have been extended to a wide variety of polymers.…”

Section: Introductionmentioning

confidence: 99%

Thermally Assisted Self‐Healing and Shape Memory Behavior of Diphenolic Acid‐Based Benzoxazines

Ručigaj

Ambrožič

Krajnc

2020

Macro Materials & Eng

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Two diphenolic acid‐based benzoxazines are designed and crosslinked to form smart polymers with shape memory and self‐healing ability. Aliphatic molecules of stearylamine and jeffamine are selected with the intent to introduce network flexibility and mobility in the designed copolymer system. While stearylamine is incorporated to form a more rigid benzoxazine molecule (DaSa), aliphatic polyether molecule of jeffamine in benzoxazine (DaJa) allows system mobility. Prepared benzoxazine precursors are characterized by nuclear magnetic resonance and IR method, while thermomechanical properties are determined by differential scanning calorimetry and dynamic mechanical analysis. Glass transition temperature increases with the increasing proportion of the more rigid benzoxazine from stearylamine ranging from 6 to 104 °C. All prepared copolymers show promising self‐healing and shape memory abilities proved by fracture toughness and self‐deploy tests, respectively. The best results are reached at 50 and 60 wt% of DaSa benzoxazine (glass transition temperature being 83 and 84 °C) in the copolymer system with self‐healing ability of 50–60% in three consecutive cycles, shape fixity above 90%, and shape recovery over 90%. The synthesis chemicals such as diphenolic acid, jeffamine, stearylamine, and paraformaldehyde can be of a natural origin having a great potential to develop a bio‐based system.

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The journey of self-healing and shape memory polyurethanes from bench to translational research

Abstract: In this critical review, we have enlisted a comprehensive summary of different approaches that have been used over the past decade to synthesize self-healing polyurethanes including “close then heal” and “shape memory assisted self-healing” concept.

Cited by 61 publications

References 136 publications

A Brief Overview on Preparation of Self-Healing Polymers and Coatings via Hydrogen Bonding Interactions

A Brief Overview on Preparation of Self-Healing Polymers and Coatings via Hydrogen Bonding Interactions

Tailor‐Made Functional Polymethacrylates with Dual Characteristics of Self‐Healing and Shape‐Memory Based on Dynamic Covalent Chemistry

Thermally Assisted Self‐Healing and Shape Memory Behavior of Diphenolic Acid‐Based Benzoxazines

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