Erasure of the processing effects in polyamide 6 based cast films by the introduction of montmorillonite: Effect on water and oxygen transport properties

Sabard, Mathieu; Gouanvé, Fabrice; Espuche, Éliane; Fulchiron, René; Fillot, Louise-Anne; Trouillet-Fonti, Lise

doi:10.1016/j.memsci.2014.01.018

Cited by 11 publications

(9 citation statements)

References 52 publications

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“…At the highest activity ( a w = 0.9), there was about 5 water molecules per cluster. This value was higher than that found for on PA6 [ 63 ], chitosan [ 29 ] and starch [ 61 ] which were 3, 4 and 2 respectively. This higher size of MCS for PBS compare to these others hydrophilic polymers can be explained by a lower affinity of water molecules to the PBS chain.…”

Section: Resultscontrasting

confidence: 70%

Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process

2021

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Polybutylene Succinate (PBS)/Graphene nanoplatelets (GnP) nanocomposites over a range of GnP from 0 to 1.35 wt.%. were prepared by a melt process. A mixture of individual graphene nanosheets and aggregates was obtained by the addition of GnP in the PBS matrix. The presence of these fillers did not significantly modify the morphology, crystalline microstructure of the matrix or its thermal stability. However, a slight reinforcement effect of PBS was reported in the presence of GnP. The water sorption isotherm modelling with Guggenheim, Andersen and De Boer (GAB) equation and Zimm-Lundberg theory allowed a phenomenological analysis at the molecular scale. The presence of GnP did not modify the water sorption capacity of the PBS matrix. From a kinetic point of view, a decrease of the diffusion coefficient with the increasing GnP content was obtained and was attributed to a tortuosity effect. The influence of water activity was discussed over a range of 0.5 to 1 and 0 to 0.9 for water and dioxygen permeability. Improvement of the barrier properties by 38% and 35% for water and dioxygen permeability respectively were obtained.

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Section: Resultscontrasting

confidence: 70%

Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process

2021

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“…Sabard et al explained that the enhancement of barrier properties of polyamide nanocomposites could not only be attributed to the effect of nanoclay layers by means of tortuosity which is related to the volume fraction, the aspect ratio and the orientation of the impermeable fillers, but also to a modification of the crystalline state of the polymer matrix.…”

Section: Polyamide Nanocompositesmentioning

confidence: 99%

Advances in polyamide nanocomposites: A review

2018

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The present review highlights the effect of different types of nanoparticles/nanotubes/nanolayers in polyamide nanocomposite properties. Polyamides belong to an important class of engineering polymers due to their interesting properties, such as temperature stability, good chemical resistance, relatively high tensile strength and stiffness. The availability of different types of nanoparticles and its functionalization, besides the improved knowledge on the integration with the polyamide matrix, has opened possibilities for developing new fields of applications and products. POLYM. COM-POS., 00:000-000, FIG. 12. TEM images of PA6/prisitine multi-walled carbon nanotubes (MWNT) (a) and PA6/amide like-3 MWNT nanocomposites (5 phr) by melt-compounding. Reprinted from [40], Copyright (2014), with permission from Elsevier.

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“…Sabart et al have reported that the use of a higher chill‐roll temperature led to a slightly lower degree of crystallinity but a higher fraction of γ phase in the total crystalline phase of the PA6 and resulted in improved barrier properties . From the results obtained in this research, it is difficult to definitely say whether this trend also occurs in these two bio‐PAs.…”

Section: Resultsmentioning

confidence: 70%

Mechanical and Barrier Properties Enhancement in Film Extruded Bio‐Polyamides With Modified Nanoclay

et al. 2018

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The plastics industry is increasingly oriented towards the use of bio‐based polymers replacing the fossil‐based ones. Bio‐based polyamides (PAs) in the film packaging application are not still used and need enhancement to overcome some drawbacks. In this scenario, fully (PA10.10) and partially (PA6.10) bio‐based PAs were extruded in a laboratory sheet‐casting machine. The materials used to obtain films were previously melt blended with modified clay in a twin‐screw extruder. The resulting films were morphologically investigated through the scanning electron microscope. The magnifications show agglomerated particles and the packed layers are preferentially aligned in the extrusion machine direction. X‐rays confirm that 5 wt% of clay content is difficult to exfoliate in such matrices. The crystallinity was studied by using X‐ray diffraction (XRD) and differential scanning calorimetry. The XRD results show coexisting α and γ phases in the PA6.10 while the presence of only γ in the PA10.10. The presence of clay platelets constrains the crystallites formation, especially in the more polar PA6.10, resulting in changes in the type and the amount of crystals. The mechanical analysis data showed that 5 wt% of clay induced significant improvement in Young's modulus (+68 and + 14%), a slight increase in the tensile yield stress (+21 and + 5%) and only a surprisingly small decrease in the deformation at break (−15 and −24%) for PA10.10 and PA6.10, respectively. Furthermore, the addition of clay gave the best oxygen barrier properties reaching a value of 1.8 ± 0.2 cm3 × mm/m2 × day × atm comparable to a commercial PA6 film used in the packaging field. POLYM. COMPOS., 40:2617–2628, 2019. © 2018 Society of Plastics Engineers

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Erasure of the processing effects in polyamide 6 based cast films by the introduction of montmorillonite: Effect on water and oxygen transport properties

Cited by 11 publications

References 52 publications

Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process

Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process

Advances in polyamide nanocomposites: A review

Mechanical and Barrier Properties Enhancement in Film Extruded Bio‐Polyamides With Modified Nanoclay

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