Mechanical and barrier properties of LLDPE/TPS/OMMT packaging film in the presence of POE-g-IA or POE-g-MA

Kazemi, Amir; Khorasani, Saied Nouri; Dinari, Mohammad; Khalili, Shahla

doi:10.1007/s10965-021-02465-6

Cited by 10 publications

(9 citation statements)

References 57 publications

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“…15 Thus, the significance of the size of clay platelets, crystallinity, and intercalation of clay behavior and its influence on the barrier properties of LLDPE/clay nanocomposites with superior mechanical properties may be considered prior to the designing of such functional barrier packaging films. The enhancement in thickness of clay tactoids at optimized 5% clay leads to improved barrier properties, and a similar observation was observed by Kazemi et al 48 The modeling of the oxygen barrier to predict the aspect ratio and orientation based on OTR values has been analyzed based on Bhardwaj 49 and Cussler-random array 50 models. The experimental data for the oxygen gas barrier were compared with the two theoretical models, as shown in Figure 7c.…”

Section: ■ Experimental Sectionsupporting

confidence: 69%

“…The polyethylene/clay nanocomposites lead to a structurally intercalated matrix in the presence of a compatibilizer . Therefore intercalated layered silicate enhanced various properties, including water and gas barrier resistance, by creating a longer tortuous path. , Said et al have reported that clay improved properties in the transverse direction (TD), as clay lamella stack aligns in the cross direction (CD) for the films made by blown film extrusion. , …”

Section: Introductionmentioning

confidence: 99%

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Robust Tear-Resistant Blown Nanocomposite Films for Barrier Packaging: Role of Clay Platelet Thickness in Tear Mechanics and Barrier Performances

Thakur

Satapathy

2023

ACS Appl. Polym. Mater.

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A linear low-density polyethylene (LLDPE) nanocomposite film with organically modified clay (Cloisite 30B) as a filler and LLDPE-grafted-maleic anhydride as a modifier was prepared by extrusion film blowing. The thermal properties, as investigated by thermogravimetric analysis and differential scanning calorimetry, indicated increased crystallinity with enhanced thermal stability. Morphological attributes of nanocomposite films were demonstrated by transmission electron microscopy, and the thickness distribution of clay platelets was analyzed by kite plot. The radius of gyration (R g) of LLDPE chains is studied by small-angle X-ray scattering from the Guinier region. The analysis of tear fracture and its associated surface morphology was done by scanning electron microscopy. The oxygen transmission rate (OTR) and water vapor transmission rate (WVTR) were measured for nanocomposite films. The 5 wt % clay-loaded nanocomposite film showed a ∼23.5 and ∼33.4% decrease in WVTR and OTR, respectively, compared to that of neat LLDPE films. The effect of crystallinity on tear energy and the influence of clay thickness in film transmittance on the barrier properties of various nanocomposite films with varied clay content were discussed. The paper demonstrated the correspondence between lower R g values and low platelet thickness, which in turn remained directly correlated to OTR and WVTR.

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Section: ■ Experimental Sectionsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Robust Tear-Resistant Blown Nanocomposite Films for Barrier Packaging: Role of Clay Platelet Thickness in Tear Mechanics and Barrier Performances

Thakur

Satapathy

2023

ACS Appl. Polym. Mater.

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“…Graphene, in essence, creates a tortuous path across the sample thickness for O 2 and water vapor molecules. 43,44 Figure 6G,I show the OTR and WVTR values for each set of LLDPE/graphene nanocomposites as a function of the graphene content. The observed OTR and WVTR values for neat LLDPE are 3542 cc/m 2 /day and 7.54 g/m 2 /day, respectively.…”

Section: Barrier Propertiesmentioning

confidence: 99%

Improved rheological, barrier, antibacterial, and electromagnetic interference shielding properties of graphene and graphene derivatives based linear low density polyethylene nanocomposites

et al. 2023

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Multifunctional polymer/graphene based lightweight and flexible nanocomposite films are increasingly being utilized in the packaging, electronics, and pharmaceutical industries together. Herein, two graphene derivatives: silver nanoparticle decorated reduced graphene oxide (G‐Ag) and chemically reduced graphene oxide (rGO) prepared by wet chemical method and graphene nanoplatelets (GNP) have been incorporated into linear low density polyethylene (LLDPE) thermoplastic matrix via melt compounding method. The incorporation of graphene derivatives affected the physico‐mechanical, electrical and thermal conductivity, and barrier properties (both oxygen and water vapor permeability) of the nanocomposite films. With 5 wt% of G‐Ag, rGO, and GNP loading, the thermal conductivity of these three nanocomposite films was enhanced by an average of 136.7%, 123%, and 143.3%, respectively. Graphene having high specific surface area and aspect ratio allow for a tortuous passage of oxygen and water molecules through the nanocomposite film, ultimately improving both oxygen and water vapor impermeability qualities for all LG‐Ag, LrGO, and LGNP nanocomposites. Moreover, the films have been tested against both gram‐positive and gram‐negative bacteria to ensure their bactericidal activity. The prepared composite films also showed Electromagnetic Interference (EMI) shielding effectiveness (−21, −17, and −19 dB) higher than the commercial cut‐offs. The thermoplastic nanocomposite films with promising thermal conductivity might be an excellent choice for bacteria‐resistant and barrier‐capable packaging and efficient thermal management EMI shields in electronics.

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“…As a result, the oxygen and vapor permeability are reduced by these nano ller particles. Graphene, in essence, creates a tortuous path across the sample thickness for O 2 and water vapor molecules [50,51]. show OTR values of 2585, 2547 and 2420 cc/m 2 /day and WVTR values of 3.41, 3.29 and 2.46 g/m 2 /day, respectively.…”

Section: Barrier Propertiesmentioning

confidence: 99%

Fabrication of graphene and graphene derivatives based thermoplastic nanocomposite films for high barrier antibacterial packaging, EMI shielding and thermal management applications

Ghosh

Nath

Ganguly

et al. 2022

Preprint

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Multifunctional polymer/graphene nanocomposite based lightweight and flexible films are increasingly being utilized in the packaging, electronics, and pharmaceutical industries together. Herein, three different types of graphene derivatives have been incorporated into linear low density polyethylene (LLDPE) thermoplastic matrix via melt compounding method. As an anisotropic filler that is extensively employed, graphene possesses the ability to not only impose electrical conductivity, but also increase their barrier properties and reinforcement to a larger extent. The microscopic analyses showed that, because of polarity, graphene nanoplatelets are the most significant and accepted filler for homogeneous mixing in the LLDPE matrix. But in order to fabricate a versatile sub-millimeter packaging film, noble metal has been deposited onto the graphene sheets (G-Ag) via wet chemical synthesis method followed by melt mixing with LLDPE matrix. This modification affected the electrical conductivity, barrier properties (both oxygen and water vapor permeability), and UV-transmittance. With 5 wt% of G-Ag, reduced graphene oxide (RGO), and graphene nanoplatelet (GNP) loading, the thermal conductivity of these three nanocomposite films was enhanced by an average of 82%, 77%, and 96%, respectively. Moreover, the film has been tested against both gram-positive and gram-negative bacteria to ensure its bactericidal activity. The prepared graphene derivatives reinforced thin films were also showing EMI shielding values (-21 dB, -17 dB, and -19 dB) more than the commercial cut-offs. Therefore, it is possible to deduce graphene-based thermoplastic nanocomposite, which might be an excellent choice for bacteria-resistant and barrier-capable packaging and efficient thermal management EMI shields in wearable and flexible electronics.

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Mechanical and barrier properties of LLDPE/TPS/OMMT packaging film in the presence of POE-g-IA or POE-g-MA

Cited by 10 publications

References 57 publications

Robust Tear-Resistant Blown Nanocomposite Films for Barrier Packaging: Role of Clay Platelet Thickness in Tear Mechanics and Barrier Performances

Robust Tear-Resistant Blown Nanocomposite Films for Barrier Packaging: Role of Clay Platelet Thickness in Tear Mechanics and Barrier Performances

Improved rheological, barrier, antibacterial, and electromagnetic interference shielding properties of graphene and graphene derivatives based linear low density polyethylene nanocomposites

Fabrication of graphene and graphene derivatives based thermoplastic nanocomposite films for high barrier antibacterial packaging, EMI shielding and thermal management applications

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