Self-healing thermoplastic polyurethane (TPU)/polycaprolactone (PCL) /multi-wall carbon nanotubes (MWCNTs) blend as shape-memory composites

Xu, Xiaohui; Fan, Peidong; Ren, Jia; Cheng, Yu; Ren, Junkai; Zhao, Jun; Song, Rui

doi:10.1016/j.compscitech.2018.10.003

Cited by 125 publications

(72 citation statements)

References 34 publications

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“…Gosh and Urban produced polyurethane networks capable of self-healing as soon as they were exposed to ultraviolet light [24]. Xu et al [25] produced a mixture of thermoplastic polyurethane (TPU) and polycaprolactone (PCL) as a shape memory matrix with embedded multiwalled carbon nanotubes. They examined the performance, selfhealing efficiency and shape recovery of resulting polymer blend.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on self-activated healing performance of thermosetting polyurethane prepared by tungsten (VI) chloride catalyst

Fereidoon

Ghasemi-Ghalebahman

Amini‐Nejad

et al. 2020

Mater. Res. Express

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Polymers and polymeric composites are widely used for various applications due to their outstanding and wide range of properties. Polyurethanes, existing in different types, are novel and versatile polymers with excellent mechanical properties. Thermosetting polyurethane resins are among the most widely used polyurethanes wherein their manufacturing and developing have been introduced during the last few years. Self-healing materials have been inspired by biological systems in which damages provoke healing responses. It is almost cost-effective to use self-healing materials in commercial applications. This study investigates a novel self-activated approach in thermosetting polyurethane resins. A tungsten (VI) chloride (WCl 6 ) catalyst, a co-activator (phenylacetylene) and a dissolution agent (nonylphenol) were used for the onset of ring-opening metathesis polymerization of dicyclopentadiene. Here different percentages of a catalyst in polyurethane resins were used, the impacts of which on fracture toughness and healing efficiency were also studied. To examine healing efficiency, samples with tapered double-cantilever beam geometry were prepared and using the selfactivated method, the development of thermosetting polyurethane self-healing was investigated. The results showed that the concentration of catalyst affects the basic properties of the material and healing efficiency of the composite. The highest healing efficiency of 97% was obtained for a 3 wt% catalyst.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on self-activated healing performance of thermosetting polyurethane prepared by tungsten (VI) chloride catalyst

Fereidoon

Ghasemi-Ghalebahman

Amini‐Nejad

et al. 2020

Mater. Res. Express

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“…They found an increase in the stress of the welded samples with welding time whereas higher temperature promoted the welding ability ( Figure 10). In another work reported by Xu et al [71], the demonstration of the self-healing and shape memory ability of thermoplastic polyurethane and polycaprolactone blended with MWCNTs has been made using melt-blending technique. They disclosed that the addition of MWCNTs could allow the polyurethane blend to respond to near infrared (NIR) radiation and achieve healing repeatedly.…”

Section: Self-healingmentioning

confidence: 99%

“…(a) Illustration of the healing process of polyurethane composite with 50% thermoplastic polyurethane, 50% polycaprolactone and 3% MWCNT (U1C1-3) using near infrared (NIR) irradiation (808 nm, 0.5 W, 15 cm), (b) optical images of scratched and healed surfaces, stress-strain curves for U1C1-3 samples (c) with different irradiation times and (d) with healing cycles[71].…”

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confidence: 99%

Shape Memory Polyurethane and its Composites for Various Applications

2019

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The inherent capability to deform and reform in a predefined environment is a unique property existing in shape memory polyurethane. The intrinsic shape memory ability of the polyurethane is due to the presence of macro domains of soft and hard segments in its bulk, which make this material a potential candidate for several applications. This review is focused on manifesting the applicability of shape memory polyurethane and its composites/blends in various domains, especially to human health such as shielding of electromagnetic interference, medical bandage development, bone tissue engineering, self-healing, implants development, etc. A coherent literature review highlighting the prospects of shape memory polyurethane in versatile applications has been presented.

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“…At present, the use of carbon fibres as reinforcement for such polymers is at the early stage of research and there are not many reports dealing with the subject [18][19][20][21][22][23][24][25][26][27]. Most published reports on PU self-regeneration concern the use of the reversible Diels-Adler reaction [28][29][30] or a description of the effectiveness of self-regeneration mechanisms of neat polyurethane matrices without fibrous modifiers [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Self-Healing Polyurethane-Based Nanocomposites Modified with Carbon Fibres and Carbon Nanotubes

Szatkowski

Pielichowska

Błażewicz

2020

Advances in Polymer Technology

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Self-healing polyurethanes (PUs) were synthesized as a matrix of nanocomposites containing two fibrous carbon components, i.e., functionalized carbon nanotubes (CNF-OH) and short carbon fibers (CF). Two types of PUs differing in the content of flexible chain segments (40% and 50%) were used. Changes in mechanical strength were analyzed to assess the ability to self-healing of PU-based matrix nanocomposites with experimentally introduced damage in the form of an incision. The healing process was activated by heating the damaged samples at 60°C, for 30 minutes. The addition of CNT-OH and CF caused a slight reduction in the self-healing ability of the nanocomposites as compared to the neat PUs. After heating to 60°C, the nanocomposites self-healed up to 72% of the initial strength of the undamaged samples. The introduction of fibrous components to the polymer matrix improved the thermal conductivity of nanocomposites and facilitated heat transfer from the environment to the interior of the samples, necessary to initiate self-healing. Low content of carbon components in the PU matrix, i.e., 3 wt% of CF and 2 wt% of CNF-OH increased the total work up to fracture of samples after healing by about 53%.

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Self-healing thermoplastic polyurethane (TPU)/polycaprolactone (PCL) /multi-wall carbon nanotubes (MWCNTs) blend as shape-memory composites

Cited by 125 publications

References 34 publications

Experimental investigation on self-activated healing performance of thermosetting polyurethane prepared by tungsten (VI) chloride catalyst

Experimental investigation on self-activated healing performance of thermosetting polyurethane prepared by tungsten (VI) chloride catalyst

Shape Memory Polyurethane and its Composites for Various Applications

Self-Healing Polyurethane-Based Nanocomposites Modified with Carbon Fibres and Carbon Nanotubes

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