Tensile, fatigue and thermomechanical properties of poly(ethylene-co-vinyl acetate) nanocomposites incorporating low and high loadings of pre-swelled organically modified montmorillonite

The aim of this work is to investigate the degradation of low molar mass poly(ethylene terephthalate) (PET)/organically modified montmorillonite (OMMT) clay nanocomposites prepared by melt processing. The rheological behavior in combination with transmission electron microscopic images suggests an intercalation and therefore a percolating network. Furthermore, the results indicate that the increase of organoclay content caused a degradation of PET during processing of PET/OMMT nanocomposites, once it was observed the PET molar mass decreases. The effect mentioned could be attributed to an increase of Brønsted acidic sites on the platelet surface, which is produced by the Hofmann elimination reaction of ammonium, and also the presence of residual metal compounds on clay surface might possibly favored the polymer matrix degradation process.

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Influence of organically modified montmorillonite and sepiolite clays on the physical properties of bio-based poly(ethylene 2,5-furandicarboxylate)

Composites Part B Engineering ◽

10.1016/j.compositesb.2016.11.008 ◽

2017 ◽

Vol 110 ◽

pp. 96-105 ◽

Cited By ~ 51

Author(s):

Lucrezia Martino ◽

Nathanaël Guigo ◽

Jesper Gabriël van Berkel ◽

Nicolas Sbirrazzuoli

Keyword(s):

Physical Properties ◽

Modified Montmorillonite ◽

Organically Modified Montmorillonite ◽

Organically Modified ◽

Poly Ethylene

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Intercalation behavior of poly(ethylene glycol) in organically modified montmorillonite

Applied Surface Science ◽

10.1016/j.apsusc.2013.03.123 ◽

2013 ◽

Vol 276 ◽

pp. 502-511 ◽

Cited By ~ 18

Author(s):

Shipeng Zhu ◽

Hongmei Peng ◽

Jinyao Chen ◽

Huilin Li ◽

Ya Cao ◽

...

Keyword(s):

Ethylene Glycol ◽

Poly Ethylene Glycol ◽

Modified Montmorillonite ◽

Organically Modified Montmorillonite ◽

Organically Modified ◽

Poly Ethylene

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Na-Montmorillonite Vs. Organically Modified Montmorillonite as Essential Oil Nanocarriers for Melt-Extruded Low-Density Poly-Ethylene Nanocomposite Active Packaging Films with a Controllable and Long-Life Antioxidant Activity

Nanomaterials ◽

10.3390/nano10061027 ◽

2020 ◽

Vol 10 (6) ◽

pp. 1027

Author(s):

Aris Giannakas

Keyword(s):

Antioxidant Activity ◽

Essential Oil ◽

Barrier Properties ◽

Active Packaging ◽

Low Density ◽

Packaging Films ◽

Modified Montmorillonite ◽

Organically Modified Montmorillonite ◽

Organically Modified ◽

Poly Ethylene

Nowadays, active packaging is becoming significant for the extension of the shelf life of food products via the incorporation of raw nanomaterials such as nanoclays and bioactive compounds such as essential oils (EO). This study aims to study the performance of the sodium montmorillonite (NaMt) and organically modified montmorillonite (OrgMt) as thyme (TO), oregano (OO), and basil (BO) essential oil (EO) control release nanocarriers in low-density poly-ethylene (LDPE) active films. NaMt and OrgMt nanofillers are modified with low (20 wt.%), medium (40 wt.%), and high (80 wt.%) nominal contents of TO, OO, and BO. The novel active packaging films were tested using the X-ray diffraction method (XRD), tensile, water, and oxygen barrier properties, and antioxidant activity tests. For the two most active packaging films, the lipid oxidation of chicken breast fillets estimated by the thiobarbituric-acid-reacting substances (TBARS) method. Overall study shows that both NaMtEO-based and OrgMt-based films exhibited controllable and sustained antioxidant activity. All films retained up to 50–70% of their antioxidant activity after six months of incubation. OrgMtEO-based LDPE films showed more significance applied as active packaging films than NaMtEO-based LDPE films because of their highest tensile and barrier properties.

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