Self-healing dual cured polyurethane elastomeric coatings prepared by orthogonal reactions

Shahidzadeh, Mansour; Varkaneh, Zahra Khansari; Ramezanzadeh, Bahram; Pedram, Mona Zamani; Yarmohammadi, Masoud

doi:10.1016/j.porgcoat.2019.105503

Cited by 26 publications

(18 citation statements)

References 64 publications

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“…Fig.9Comparison of the h value, self-healing time and self-healing temperature of the elastomers reported in this work and those reported in recent studies. 2,18,21,26,41,64,69,[72][73][74][75][76][77][78] …”

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confidence: 99%

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

et al. 2021

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confidence: 99%

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

et al. 2021

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“…[176,182,183] Another frequent approach is to connect diene and dienophiles to the rubber chains by thiol-ene addition (Figure 12b). [62,[184][185][186] A third methodology to link diene structures to the rubber macromolecules as post-polymerization modification was reported by Feng et al [187] In order to introduce the furan ring into the polymer backbone, commercial epoxidized natural rubber (ENR) was employed with 40% of epoxide degree. The furan bearing an amino substituent was covalently attached by a ring opening reaction with the epoxides present on ENR.…”

Section: Rubber Modifications Via Pericyclic Reactionsmentioning

confidence: 99%

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Soares

Steinbüchel

2021

Macromolecular Bioscience

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Diene rubbers are polymeric materials which present elastic properties and have double bonds in the macromolecular backbone after the polymerization process. Post-polymerization modifications of rubbers can be conducted by enzymatic or chemical methods. Enzymes are environmentally friendly catalysts and with the increasing demand for rubber waste management, biodegradation and biomodifications have become hot topics of research. Some rubbers are renewable materials and are a source of organic molecules, and biodegradation can be conducted to obtain either oligomers or monomers. On the other hand, chemical modifications of rubbers by click-chemistry are important strategies for the creation and combination of new materials. In a way to expand the scope of uses to other non-traditional applications, several and effective modifications can be conducted with diene rubbers. Two groups of efficient tools, enzymatic, and chemical modifications in diene rubbers, are summarized in this review. By analyzing stereochemical and reactivity aspects, the authors also point to some applications perspectives for biodegradation products and to rational modifications of diene rubbers by combining both methodologies.

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“…38 Considerably, the fabricated elastomer via their suggested method could be reshaped and reprocessed by room-temperature compression through rearrangements of the cross-linked. 38 In continuous to our previous studies on self-healing materials [39][40][41][42][43] and polymer properties, 25,44 self-heal epoxy coatings have been prepared using disulfide metathesis reaction. In this regard, an epoxy terminated chain extender with capability of performing reversible reaction has been synthesized via functionalization of 3,3 0 -dithiodipropionic acid (DTPA) with bisphenol A diglycidyl ether (DGEBA).…”

Section: Introductionmentioning

confidence: 99%

“…In continuous to our previous studies on self‐healing materials 39–43 and polymer properties, 25,44 self‐heal epoxy coatings have been prepared using disulfide metathesis reaction. In this regard, an epoxy terminated chain extender with capability of performing reversible reaction has been synthesized via functionalization of 3,3′‐dithiodipropionic acid (DTPA) with bisphenol A diglycidyl ether (DGEBA).…”

Section: Introductionmentioning

confidence: 99%

Thermal induced intrinsic self‐healing in epoxy based elastomer coatings provided by disulfide metathesis reactions

Eidi

Pedram

2022

J of Applied Polymer Sci

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Self-heal epoxy coatings have been prepared using sulfur-sulfur metathesis reaction as an intrinsic method for inducing self-healing property. Inducing of the self-healing property was carried out via insertion of the 3,3 0 -dithiodipropionic acid as chain extender functionalized with bisphenol A diglycidyl ether.According to the results, the prepared coatings were capable to recover their mechanical properties after damage and heal their surface as well. Noticeably, the healing yield of the coatings was about 43% and 76% for the samples containing 0.5 and 1.0 equivalents of chain extender, respectively. Furthermore, the mechanical properties of the self-heal coating were modified in the presence of the disulfide bonds from 0.22 MPa to 1.25 MPa. Regarding to the increment of the crosslinking density due to the presence of the sulfur containing chain expender, the average molecular weights between crosslinkings was reduced from 43.75 Â 10 3 g mol À1 in epoxy sample to 4.61 Â 10 3 g mol À1 in sulfur containing sample. The proposed facilitate method for inducing the self-healing property make it applicable to a wide range of epoxy coatings.

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Self-healing dual cured polyurethane elastomeric coatings prepared by orthogonal reactions

Cited by 26 publications

References 64 publications

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Thermal induced intrinsic self‐healing in epoxy based elastomer coatings provided by disulfide metathesis reactions

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