The influence of furanyl monomer on the self-healing polyurethanes by reverse Diels-Alder cross-link

In this paper, a self-healable nanocomposite based on the Diels-Alder reaction is developed. A graphene-based nanofiller is introduced to improve the self-healing efficiency, as well as the mechanical properties of the nanocomposite. Graphene oxide (GO) is modified with maleimide functional groups, and the maleimide-modified GO (mGO) enhanced the compatibility of the polymer matrix and nanofiller. The tensile strength of the nanocomposite containing 0.030 wt% mGO is improved by 172%, compared to that of a polymer film incorporating both furan-functionalized polymer and bismaleimide without any nanofiller. Moreover, maleimide groups of the surface on mGO participate in the Diels-Alder reaction, which improves the self-healing efficiency. The mechanical and self-healing properties are significantly improved by using a small amount of mGO.

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Furan-based self-healing breathable elastomer coating on polylactide fabric

Textile Research Journal ◽

10.1177/0040517518755791 ◽

2018 ◽

Vol 89 (5) ◽

pp. 814-824 ◽

Cited By ~ 1

Author(s):

Yeon Sung Ryu ◽

Kyung Wha Oh ◽

Seong Hun Kim

Keyword(s):

Water Repellency ◽

Mechanical Analysis ◽

Alder Reaction ◽

Diels Alder ◽

The Self ◽

Vapor Permeability ◽

Self Healing ◽

Diels Alder Reaction ◽

Poly Ethylene ◽

Breathable Waterproof Fabric

The demand for breathable waterproof products has increased with the need for functional sportswear. However, these membranes have a major weakness in the loss of performance over time. The self-healing polymer has attracted much attention as a solution to this problem. In this research, a bio-based self-healing polymer from furan-based polymer was synthesized to produce a sustainable waterproof membrane. The furan-based self-healing polymer was synthesized from poly(butylene furanoate) and bismaleimide via a Diels–Alder reaction and blended with bio polyurethane. Poly(ethylene glycol) was also blended to obtain nonporous breathable waterproofness. These synthesis processes were identified by spectroscopy analysis. To investigate the self-healing ability of the polymer, a film sample was sliced and reattached. These self-healing processes were observed and verified by morphological and mechanical analysis. These self-healing polymer films were successfully healed in 24 h. The polymer was coated on a polylactide fabric using a doctor blade. The self-healing ability of the membrane was investigated by breathable water repellency analysis and it was maintained after the coating process. The waterproofness and vapor permeability were also measured, and these results identified that the fabricated membrane has a possibility as a breathable waterproof fabric. Environmental performance was confirmed by the enzymatic degradation test.

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Effect of epoxy matrix architecture on the self-healing ability of thermo-reversible interfaces based on Diels–Alder reactions: demonstration on a carbon fiber/epoxy microcomposite

RSC Advances ◽

10.1039/c6ra23246a ◽

2016 ◽

Vol 6 (115) ◽

pp. 114235-114243 ◽

Cited By ~ 10

Author(s):

W. Zhang ◽

J. Duchet ◽

J. F. Gérard

Keyword(s):

Composite Material ◽

Carbon Fiber ◽

Epoxy Matrix ◽

Diels Alder ◽

The Self ◽

Self Healing ◽

Fiber Reinforced Composite ◽

Reinforced Composite ◽

Carbon Fiber Epoxy ◽

Reinforced Composite Material

Thermally reversible Diels–Alder adducts formed between furan and maleimide groups have been introduced into the interphase of a carbon fiber-reinforced composite material to design a self-healable composite material.

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