Effect of different type of organomontmorillonites on oxygen permeability of <scp>PLA</scp>‐based nanocomposites blown films

Adrar, Salima; Ajji, Abdellah

doi:10.1002/pen.26145

Cited by 3 publications

(17 citation statements)

References 77 publications

(113 reference statements)

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“…This synergy resulted in an increased level of compatibility between PLA and the plasticizers. Indeed, the aromatic groups present in the D43B modifier had the potential to interact with the hydroxyl groups found in both these plasticizers and PLA chains, thereby promoting improved compatibility within the blend 16,21,30,31 …”

Section: Resultsmentioning

confidence: 99%

“…The crystallinity rate

X_{C}

of different films produced, is calculated using the Equation , where the

{∆ H}_{m}^{0} = 93, 0 J / g

21 and

W_{PLA}

are respectively the enthalpy for PLA 100% crystallin and its weight percentage in the PLA mixtures.

X_{C} (%) = \frac{∆ H_{m} - ∆ H_{cc}}{(W_{PLA}) {∆ H}_{m}^{0}} \times 100 .

…”

Section: Resultsmentioning

confidence: 99%

“…Specifically, the D43B-PLA system exhibited a strong interaction, resulting in increased crystallinity and an impressive 60% reduction in oxygen permeability, underscoring the pivotal role of OMMt properties in achieving effective gas barrier properties for food packaging. 21 Building on these insights, our current study aims to delve deeper into our understanding by examining the influence of various plasticizers on the interplay between Dellite ® 43B (D43B) and PLA. Additionally, we investigate how these chosen plasticizers impact the barrier and mechanical properties of PLA nanocomposite blown films.…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study, the choice of OMMt significantly influenced the oxygen permeability of PLA nanocomposite films, highlighting the importance of dispersion and compatibility. Specifically, the D43B‐PLA system exhibited a strong interaction, resulting in increased crystallinity and an impressive 60% reduction in oxygen permeability, underscoring the pivotal role of OMMt properties in achieving effective gas barrier properties for food packaging 21 …”

Section: Introductionmentioning

confidence: 99%

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Interactions between PLA, organo‐montmorillonite and plasticizer: Synergistic effect on the barrier and mechanical properties of PLA nanocomposites blown films

Adrar,

Ajji

2023

J of Applied Polymer Sci

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In this study, the impact of incorporating a plasticizer on the compatibility between organo‐montmorillonite (OMMt) and polylactic acid (PLA) is investigated, and the resulting barrier and mechanical properties are reported. Four polymers were chosen as plasticizers to prepare the PLA nanocomposite blown films: poly(ethylene glycol), poly(ethylene oxide), polycaprolactone (PCL), and random ethylene‐methyl acrylate‐glycidyl methacrylate terpolymer. Firstly, 5 wt% of each plasticizer and 3 wt% of OMMt (Dellite® D43B) were mixed simultaneously with PLA in a twin‐screw extruder and then introduced into the hopper of a single screw extruder to produce D43B‐PLA/plasticizer nanocomposite films. The compatibilization effect was examined based on microstructure observations and thermodynamic predictions. Crystallinity was evaluated using DSC and XRD measurements. The results obtained for permeability and mechanical testing showed that the improvement of barrier and mechanical properties depends directly on the degree of compatibility between plasticizer, OMMt, and PLA. Indeed, the interfacial properties, XRD diffraction, and TEM images showed that a synergistic effect can result from high interfacial interactions between different compounds.

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Section: Resultsmentioning

confidence: 99%

“…The crystallinity rate

X_{C}

of different films produced, is calculated using the Equation , where the

{∆ H}_{m}^{0} = 93, 0 J / g

21 and

W_{PLA}

are respectively the enthalpy for PLA 100% crystallin and its weight percentage in the PLA mixtures.

X_{C} (%) = \frac{∆ H_{m} - ∆ H_{cc}}{(W_{PLA}) {∆ H}_{m}^{0}} \times 100 .

…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interactions between PLA, organo‐montmorillonite and plasticizer: Synergistic effect on the barrier and mechanical properties of PLA nanocomposites blown films

Adrar,

Ajji

2023

J of Applied Polymer Sci

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“…Among the list of available biopolymers on the market, poly(lactic acid) or polylactide (PLA), a biocompatible and biodegradable thermoplastic polymer, has enormous potential to fill the gap with its good mechanical and thermal properties, heat processability, transparency, and desired biocompatibility and biodegradability. [5][6][7][8] Nevertheless, PLA has some drawbacks to being a strong contender for biodegradable packaging in the food industry. Those are brittleness, poor barrier properties, especially those sensitive to humidity, weak thermal stability, low glass transition temperature, and a lack of UV protection.…”

Section: Introductionmentioning

confidence: 99%

Coextruded polylactide/encapsulated cinnamon essential oil/graphene nanoplatelets trilayer films: Morphological, barrier, thermal, rheological and antimicrobial properties

Ahmed,

Bher,

Jacob

et al. 2024

Polymer Engineering & Sci

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Polylactide (PLA)‐based biodegradable three‐layer packaging film was fabricated using PLA, PLA/cinnamon oil (CEO), and PLA/graphene nanoplatelets (GNP). The central layer allows control over the release of antimicrobes, and the outer layer adds mechanical strength to the films. A comparison has been made on barrier, thermal, rheological, microstructural, and microbiological properties between single‐layer and multilayer films (MLF). The water vapor and oxygen barrier properties of MLF showed little reduction compared with those of neat PLA. The tensile stress of the neat PLA increased significantly from 23.31 to 35.91 MPa for the MLF. Thermal analysis data showed improvements in the thermal stability of the MLF film, with onset and peak temperatures of 331.5 and 357.1°C, respectively. The dispersion of GNP in the PLA matrix and in MLF was assessed by XRD analysis and rheological measurement. The AFM roughness parameters Sa and Sq of those films varied widely, with the highest (13.9 and 20.9 μm) and the lowest (0.08 and 0.11 μm) magnitudes recorded for PLA/GNP and PLA/CEO films, respectively. Antibacterial assays of the film confirmed a strong bactericidal effect against Listeria monocytogenes and Salmonella typhimurium, maintaining this activity for 21 days.Highlights Polylactide/cinnamon oil/ graphene nanoplatelet multilayer films were coextruded. X‐ray diffraction and rheology confirm the dispersion of graphene into PLA. Tensile stress and thermal stability improved in the multilayer films. AFM roughness parameters varied significantly between single‐ and multilayer films. Antibacterial assays confirmed the strong bactericidal effect of films against pathogens.

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Effect of blending sequence and epoxy functionalized compatibilizer on barrier and mechanical properties of PBS and PBS/PLA nanocomposite blown films

Adrar,

Ajji

2024

Vinyl Additive Technology

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This study focuses on developing compostable nanocomposite blown films, aiming to enhance oxygen barrier properties while maintaining good mechanical performance. Polybutylene succinate (PBS) and its blend with polylactic acid (PLA) were selected as matrices for the films. Organo‐montmorillonite Delite®43B (D43B) clay was incorporated to improve oxygen barrier, and random ethylene‐methyl acrylate‐glycidyl methacrylate terpolymer served as a plasticizer and reactive compatibilizer. Different blending sequences were examined to determine the optimal one that led to significant enhancements in both the barrier and mechanical properties of the final nanocomposite blown film. Various techniques, including SEM, TEM, XRD, DSC, oxygen permeability, and tensile testing were employed to characterize the morphology of the compounds and blown films. The results reveal greater oxygen barrier properties depending on the blending sequence. Indeed, a reduction in oxygen permeability exceeding 50% was observed following the addition of 3 wt% of D43B to the PBS/PLA film, selectively localized in the PLA phase. This enhancement further intensified after the addition of 5 wt% of the epoxy functionalized compatibilizer.Highlights Enhancing PLA‐PBS compatibility with the epoxy functionalized compatibilizer led to a reduction in the final film's oxygen permeability. Achieving ideal ductility and barrier balance in films requires a synergistic blend of components: D43B, PLA, PBS, and compatibilizer. Optimizing balanced synergistic effects among compounds depends on the blending sequence method.

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Effect of different type of organomontmorillonites on oxygen permeability of PLA‐based nanocomposites blown films

Cited by 3 publications

References 77 publications

Interactions between PLA, organo‐montmorillonite and plasticizer: Synergistic effect on the barrier and mechanical properties of PLA nanocomposites blown films

Interactions between PLA, organo‐montmorillonite and plasticizer: Synergistic effect on the barrier and mechanical properties of PLA nanocomposites blown films

Coextruded polylactide/encapsulated cinnamon essential oil/graphene nanoplatelets trilayer films: Morphological, barrier, thermal, rheological and antimicrobial properties

Effect of blending sequence and epoxy functionalized compatibilizer on barrier and mechanical properties of PBS and PBS/PLA nanocomposite blown films

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