Enhanced thermal stability of biobased crosslinked poly (isobornylacrylate-co-2-ethylhexylacrylate) copolymers

Merah, Dounya; Bedjaoui, Lamia; Zeggai, Nouh; Bouberka, Zohra; Sarazin, Johan; Boutalbi, Donna; Barrera, Ana María Bermejo; Boughrara, Hana; Dubois, Frédéric; Cazaux, Frédéric; Supiot, Philippe; Maschke, Ulrich

doi:10.1007/s10965-022-03139-7

Cited by 2 publications

(2 citation statements)

References 32 publications

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“…ers 2023, 15, x FOR PEER REVIEW 3 of 20 Merah et al synthesized Poly(IBOA-co-2-EHA) copolymers via free radical photopolymerization/crosslinking reactions of IBOA and 2-EHA, in the presence of 1,6-hexanedioldiacrylate (HDDA) as crosslinking agent, to obtain chemically crosslinked polymer networks [43]. Several degradation processes were observed by TGA, especially that of the isobornylene group at low temperature, followed by the degradation of the carbon backbone at higher temperatures.…”

Section: Methodsmentioning

confidence: 99%

“…For the third model (KAS), this energy varies between 80 and 220 kJ/mol in the same range of α. In the case of photochemically crosslinked Poly(2-EHA), Merah et al [43] observed a single degradation step, characterized by an activation energy estimated at 293 kJ/mol. This energy corresponds to the entire thermal decomposition of Poly(2-EHA), which mainly produces monomers through a so-called unzipping process.…”

Section: Determination Of Activation Energymentioning

confidence: 99%

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Thermal Degradation Studies of Poly(2-ethyl hexyl acrylate) in the Presence of Nematic Liquid Crystals

Bouriche,

Alachaher-Bedjaoui,

Barrera

et al. 2023

Polymers

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The thermal degradation behavior of Poly(2-ethyl hexyl hcrylate) (Poly(2-EHA)), blended with a commercially available nematic liquid crystal (LC) mixture, was investigated by thermal gravimetric analysis (TGA). Different heating rates, ranging from 5 to 200 °C/min, were applied under an inert atmosphere. Based on the TGA results, activation energies (Eα) at different conversion rates (α) were determined using three integral isoconversion methods: Flynn-Wall-Ozawa (FWO), Tang, and Kissinger-Akahira-Sunose (KAS). It can be noticed that the global evolution of these activation energies was the same for the three models. The coefficient of determination R2 presented values generally higher than 0.97. Using these models, the Eα value for the LC remains constant at 64 kJ/mol for all conversions rates. For the polymer Poly(2-EHA), applying the Tang and FWO models, the activation energy presents a variation ranging from 80 kJ/mol, for conversion α = 0.1, to 170 kJ/mol, for α = 0.9. For the third model (KAS), this energy varies between 80 and 220 kJ/mol in the same range of α.

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Section: Methodsmentioning

confidence: 99%

Section: Determination Of Activation Energymentioning

confidence: 99%

Thermal Degradation Studies of Poly(2-ethyl hexyl acrylate) in the Presence of Nematic Liquid Crystals

Bouriche,

Alachaher-Bedjaoui,

Barrera

et al. 2023

Polymers

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Phosphorus‐Containing Biobased Dimethacrylate Resin with Imine Linkages

Ozukanar,

Çakmakçi,

Kumbaraci

2024

Macro Materials & Eng

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There is a high demand for highly biobased photocurable coatings for a wide range of applications. In this work, a photocurable coating formulation is developed based on isobornyl acrylate (IBOA) and a biobased polyester diacrylate. Besides, a phosphorous‐containing biobased dimethacrylate resin having imine groups (VDDM) is synthesized. Different ratios of VDDM are added to the biobased base formulation. VDDM is characterized by nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies. The formulations are coated on aluminum substrates and photocured under UV light. The biobased contents of the prepared networks are in the range of ≈68–79%. Coatings display a good adhesion on the aluminum substrates. The incorporation of VDDM into the formulations slightly increases the glass transition temperature values. Moreover, VDDM enhances the hydrophilicity of the coatings. VDDM‐free coatings are found to be resistant to degradation under basic and acidic media, but the presence of imine bonds in VDDM leads to the partial degradation of the prepared networks under acidic aqueous conditions. Finally, it is demonstrated that the coatings prepared herein are resistant to corrosion. The prepared highly biobased networks in this study have the potential to be used as photocurable coil coatings.

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Enhanced thermal stability of biobased crosslinked poly (isobornylacrylate-co-2-ethylhexylacrylate) copolymers

Cited by 2 publications

References 32 publications

Thermal Degradation Studies of Poly(2-ethyl hexyl acrylate) in the Presence of Nematic Liquid Crystals

Thermal Degradation Studies of Poly(2-ethyl hexyl acrylate) in the Presence of Nematic Liquid Crystals

Phosphorus‐Containing Biobased Dimethacrylate Resin with Imine Linkages

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