The Use of Click-Type Reactions in the Preparation of Thermosets

Konuray, Osman; Fernández‐Francos, Xavier; Flor, Silvia De la; Ramis, Xavier; Serra, Àngels

doi:10.3390/polym12051084

Cited by 28 publications

(16 citation statements)

References 234 publications

(343 reference statements)

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“…Click reactions have been used in polymer science due to high reaction rates, oxygen and water insensitiveness, possibility to be initiated either thermally or photochemically [ 13 ]. Thiol-click reactions, including thiol-ene and thiol-epoxy click reactions, are the most notable in the last years for preparation of linear, branched and crosslinked polymers [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Vegetable Oil-Based Thiol-Ene/Thiol-Epoxy Resins for Laser Direct Writing 3D Micro-/Nano-Lithography

et al. 2021

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The use of renewable sources for optical 3D printing instead of petroleum-based materials is increasingly growing. Combinations of photo- and thermal polymerization in dual curing processes can enhance the thermal and mechanical properties of the synthesized thermosets. Consequently, thiol-ene/thiol-epoxy polymers were obtained by combining UV and thermal curing of acrylated epoxidized soybean oil and epoxidized linseed oil with thiols, benzene-1,3-dithiol and pentaerythritol tetra(3-mercaptopropionate). Thiol-epoxy reaction was studied by calorimetry. The changes of rheological properties were examined during UV, thermal and dual curing to select the most suitable formulations for laser direct writing (LDW). The obtained polymers were characterized by dynamic-mechanical thermal analysis, thermogravimetry, and mechanical testing. The selected dual curable mixture was tested in LDW 3D lithography for validating its potential in optical micro- and nano-additive manufacturing. The obtained results demonstrated the suitability of epoxidized linseed oil as a biobased alternative to bisphenol A diglycidyl ether in thiol-epoxy thermal curing reactions. Dual cured thermosets showed higher rigidity, tensile strength, and Young’s modulus values compared with UV-cured thiol-ene polymers and the highest thermal stability from all prepared polymers. LDW results proved their suitability for high resolution 3D printing—individual features reaching an unprecedented 100 nm for plant-based materials. Finally, the biobased resin was tested for thermal post-treatment and 50% feature downscaling was achieved.

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Section: Introductionmentioning

confidence: 99%

Vegetable Oil-Based Thiol-Ene/Thiol-Epoxy Resins for Laser Direct Writing 3D Micro-/Nano-Lithography

et al. 2021

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“…Click chemistry dates back to the early work of Sharpless et al 36 and was since then considered to be a conspicuous synthetic tool 37 because of several advantages, among others, mild reaction conditions, fast reaction rates, versatility, stereospecificity, and high yields. 38–40 Click reactions have been employed in various fields, namely, pharmaceuticals, bioconjugated products, materials, and polymers.…”

Section: Introductionmentioning

confidence: 99%

Selective removal of toxic organic dyes using Trӧger base-containing sulfone copolymers made from a metal-free thiol-yne click reaction followed by oxidation

et al. 2021

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“…Therefore, the increase in deformability of the epoxy composites leads to increased toughness. In this study, a ductile epoxy thermosetting was attained by curing bisphenol A diglycidylether (BPDGE) with a thiol curing agent [ 10 , 11 , 12 ]. The thiol curing agent consisted of thiol-based compounds with functionalities of 2 and 3 at the weight ratio of 1 to 1.…”

Section: Introductionmentioning

confidence: 99%

Super-Toughened Fumed-Silica-Reinforced Thiol-Epoxy Composites Containing Epoxide-Terminated Polydimethylsiloxanes

Bok

Lim

Kwak

et al. 2021

IJMS

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In response to the demand for high-performance materials, epoxy thermosetting and its composites are widely used in various industries. However, their poor toughness, resulting from the high crosslinking density of the epoxy network, must be improved to expand their application to the manufacturing of flexible products. In this study, ductile epoxy thermosetting was produced using thiol compounds with functionalities of 2 and 3 as curing agents. The mechanical properties of the epoxy were further enhanced by incorporating fumed silica into it. To increase the filler dispersion, epoxide-terminated polydimethylsiloxane was synthesized and used as a composite component. Thanks to the polysiloxane–silica interaction, the nanosilica was uniformly dispersed in the epoxy composites, and their mechanical properties improved with increasing fumed silica content up to 5 phr (parts per hundred parts of epoxy resin). The toughness and impact strength of the composite containing 5 phr nanosilica were 517 (±13) MJ/m3 and 69.8 (±1.3) KJ/m2, respectively.

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The Use of Click-Type Reactions in the Preparation of Thermosets

Cited by 28 publications

References 234 publications

Vegetable Oil-Based Thiol-Ene/Thiol-Epoxy Resins for Laser Direct Writing 3D Micro-/Nano-Lithography

Vegetable Oil-Based Thiol-Ene/Thiol-Epoxy Resins for Laser Direct Writing 3D Micro-/Nano-Lithography

Selective removal of toxic organic dyes using Trӧger base-containing sulfone copolymers made from a metal-free thiol-yne click reaction followed by oxidation

Super-Toughened Fumed-Silica-Reinforced Thiol-Epoxy Composites Containing Epoxide-Terminated Polydimethylsiloxanes

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