Model reactions for the evaluation of poly- and multifunctional molecules as potential interfacial agents for the compatibilization of polyethylene/poly(ethylene-<i>co</i>-vinyl alcohol) blends

Gitzhofer, Elisa; Vileno, Bertrand; Bouquey, Michel; Chan‐Seng, Delphine

doi:10.1039/d2py01495e

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…Altering the catalyst to CsF resulted in a decreased yield (entry 5) as observed previously. 32 Given that the half-life of DCP is 10 hours at 117 °C and 1 hour at 137 °C, 36 adjusting the temperature to 100 °C resulted in 50% of pyrroloquinoxaline 5a and recovered starting material 4a (entry 6). Raising the temperature to 140 °C led to a reduced mixture of the pyrroloquinoxalines 5a and 6a (entry 7).…”

Section: Resultsmentioning

confidence: 99%

Crafting mono- and novel bis-methylated pyrroloquinoxaline derivatives from a shared precursor and its application in the total synthesis of marinoquinoline A

Damai,

Guzzardi,

Lewis

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Crafting mono- and novel bis-methylated pyrroloquinoxaline derivatives from a shared precursor and its application in the total synthesis of marinoquinoline A

Damai,

Guzzardi,

Lewis

et al. 2023

RSC Adv.

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The quantification of radical concentration in organic radical polymers: techniques and challenges

Ellingsen,

Thickett,

Fuller

2024

Aust. J. Chem.

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The development of new high-tech applications based on organic radical polymers has driven significant and renewed focus on these open shell macromolecules. The versatility in synthetic methods makes them highly accessible materials for a variety of researchers from different backgrounds. Although numerous overviews of the synthesis, structure and properties are available, the determination of radical concentration has been largely overlooked. This primer outlines the methods available and the non-trivial nature of the characterisation process. Although quantitative electron paramagnetic resonance and magnetometry are the gold standard for direct measurement of paramagnetism, there also exists a wide range of highly accessible complimentary methods for indirect measure such as ultraviolet–visible spectroscopy, elemental analysis and infrared spectroscopy.

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Investigating competition of strong interfacial interaction and chain scission in PBAT/EVOH/GO composite by rheological measurements

Elhamnia,

Dadashi,

Motlagh

2024

Journal of Reinforced Plastics and Composites

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The blends of poly(butylene-adipate-co-terephthalate)/poly(ethylene-vinyl alcohol) (PBAT/EVOH) with varying amounts of graphene oxide (GO) were prepared by melt mixing. The localization of GO in PBAT and at the interface was confirmed by morphological evaluation. The dual effect of GO in degradation of PBAT phase and interface improvement of PBAT/EVOH was examined by rheological measurements and models. The results showed that the improved interfacial interaction induced by GO dominates its degradation effect in PBAT. Rheological analysis revealed that the interfacial elasticity originating from GO dominates the total elasticity of the system, resulting in an increase in the final elasticity. Generalized Fractional Zener (GFZ) model was used to analyze elasticity of the polymer blend and its nanocomposites with a well fit to the experimental results. Also, the Lee–Park model was used to distinguish the effects of particle interactions as well as interface strengthening from deterioration of matrix modulus due to PBAT degradation by GO. The increased elasticity of the interface showed that the strengthening effect of GO at the interface overcomes its degradation effect. Also, the application of Coran model to analyze phase homogeneity revealed a linear increase in interfacial interaction with GO concentration.

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Model reactions for the evaluation of poly- and multifunctional molecules as potential interfacial agents for the compatibilization of polyethylene/poly(ethylene-co-vinyl alcohol) blends

Abstract: Aiming an identifying an interfacial agent for polyethylene (PE)/poly(ethylene-co-vinyl alcohol) (EVOH) blends that are the main components found in flexible food packaging, triallyl isocyanurate and a molecule bearing two (2,2,6,6-tetramethylpiperidin-1-yl)oxyl...

Cited by 3 publications

References 47 publications

Crafting mono- and novel bis-methylated pyrroloquinoxaline derivatives from a shared precursor and its application in the total synthesis of marinoquinoline A

Crafting mono- and novel bis-methylated pyrroloquinoxaline derivatives from a shared precursor and its application in the total synthesis of marinoquinoline A

The quantification of radical concentration in organic radical polymers: techniques and challenges

Investigating competition of strong interfacial interaction and chain scission in PBAT/EVOH/GO composite by rheological measurements

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