scholarly journals A Study on the Oxygen Permeability Behavior of Nanoclay in a Polypropylene/Nanoclay Nanocomposite by Biaxial Stretching

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2760
Author(s):  
Bich-Nam Jung ◽  
Hyun-Wook Jung ◽  
Dong-Ho Kang ◽  
Gi-Hong Kim ◽  
Jin-Kie Shim
Keyword(s):  
Oxygen Permeability ◽  
Layer Structure ◽  
Barrier Properties ◽  
Packaging Material ◽  
Mechanical And Thermal Properties ◽  
Oxygen Barrier ◽  
Potential Candidate ◽  
Biaxial Stretching ◽  
Food And Beverage ◽  
Stretching Ratio

Polypropylene (PP) has poor oxygen barrier properties, therefore it is manufactured in a multi-layer structure with other plastics and metals, and has been widely used as a packaging material in various industries from food and beverage to pharmaceuticals. However, multi-layered packaging materials are generally low in recyclability and cause serious environmental pollution, therefore we have faced the challenge of improving the oxygen barrier performance as a uni-material. In this work, PP/nanoclay nanocomposites were prepared at nanoclay contents ranging from 0.8 to 6.4 wt% by the biaxial stretching method, performed through a sequential stretching method. It was observed that, as the draw ratio increased, the behavior of the agglomerates of the nanoclay located in the PP matrix changed and the nanoclay was dispersed along the second stretching direction. Oxygen barrier properties of PP/nanoclay nanocomposites are clearly improved due to this dispersion effect. As the biaxial stretching ratio and the content of nanoclay increased, the oxygen permeability value of the PP/nanoclay nanocomposite decreased to 43.5 cc·mm/m2·day·atm, which was reduced by about 64% compared to PP. Moreover, even when the relative humidity was increased from 0% to 90%, the oxygen permeability values remained almost the same without quality deterioration. Besides these properties, we also found that the mechanical and thermal properties were also improved. The biaxially-stretched PP/nanoclay nanocomposite fabricated in this study is a potential candidate for the replacement of the multi-layered packaging material used in the packaging fields.

scholarly journals Phosphonated Poly(ethylene terephthalate) Ionomers as Compatibilizers in Polyester/Polyamide Blends for Packaging Applications

2021 ◽  
Author(s):  
Lin Ju
Keyword(s):  
Ethylene Terephthalate ◽  
Oxygen Permeability ◽  
Barrier Properties ◽  
Oxygen Barrier ◽  
Poly Ethylene Terephthalate ◽  
Food And Beverage ◽  
Oxygen Sensitive ◽  
Polyester Matrix ◽  
Packaging Industry ◽  
Poly Ethylene

Poly(ethylene terephthalate) (PET) is widely used in the packaging industry. The oxygen barrier properties of PET are acceptable for many food and beverage products, but do not meet the stringent requirements for packaging highly oxygen-sensitive products. Blending PET with aromatic polyamides, such as poly(m-xylyene adipamide) (MXD6), reduces the inherent oxygen permeability of the polyester matrix. Due to the immiscibility of these two parent polymers, a compatibilizer is necessary to achieve an efficient and stable mixing

scholarly journals Oxygen Barrier Properties and Melt Crystallization Behavior of Poly(ethylene terephthalate)/Graphene Oxide Nanocomposites

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Anna Szymczyk ◽  
Sandra Paszkiewicz ◽  
Iwona Pawelec ◽  
Sławomir Lisiecki ◽  
Marek Jotko ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ethylene Terephthalate ◽  
Oxygen Permeability ◽  
Barrier Properties ◽  
Nanocomposite Films ◽  
Oxygen Barrier ◽  
Melt Crystallization ◽  
Nonisothermal Crystallization ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Poly(ethylene terephthalate) nanocomposites with low loading (0.1–0.5 wt%) of graphene oxide (GO) have been prepared by usingin situpolymerization method. TEM study of nanocomposites morphology has shown uniform distribution of highly exfoliated graphene oxide nanoplatelets in PET matrix. Investigations of oxygen permeability of amorphous films of nanocomposites showed that the nanocomposites had better oxygen barrier properties than the neat PET. The improvement of oxygen permeability for PET nanocomposite films over the neat PET is approximately factors of 2–3.3. DSC study on the nonisothermal crystallization behaviors proves that GO acts as a nucleating agent to accelerate the crystallization of PET matrix. The evolution of the lamellar nanostructure of nanocomposite and neat PET was monitored by SAXS during nonisothermal crystallization from the melt. It was found that unfilled PET and nanocomposite with the highest concentration of GO (0.5 wt%) showed almost similar values of the long period (L=11.4 nm for neat PET andL=11.5 nm for PET/0.5GO).

Evaluation of the Influence of a Smectite Clay in PP Composites

2014 ◽  
Vol 798-799 ◽  
pp. 737-742
Author(s):  
Kleber Vaccioli ◽  
Walker S. Drumond ◽  
Shirley Possidonio ◽  
Ticiane Sanches Valera
Keyword(s):  
Oxygen Permeability ◽  
Quaternary Salt ◽  
Packaging Material ◽  
Oxygen Barrier ◽  
X Ray Diffraction ◽  
Smectite Clay ◽  
X Ray ◽  
The Matrix ◽  
Clay Layers ◽  
Oxygen Barrier Property

In this work, the effect of the addition of an organophilic smectite clay on the properties of polypropylene (PP) was evaluated. The clay was a commercial natural montmorillonite treated with ammonium quaternary salt (Cloisite 20A®). The composites were prepared by extrusion, and contain 5 wt.% of clay. The materials were characterized by: tensile and impact strength, oxygen permeability tests, optical microscopy, thermal analysis and X-ray diffraction analysis. The mechanical properties of the PP were decreased due to the clay addition. The composites presented a microstructure predominantly intercaleted, with fine and homogeneous dispersion of the clay layers within the matrix. The composite showed an increase of about 30% in the oxygen barrier property of the PP, which is an interesting result when considering the application of the composite as a packaging material.

scholarly journals Preparation and Characterization of Films Based on Disintegrated Bacterial Cellulose and Montmorillonite

2020 ◽  
Author(s):  
Agata Sommer ◽  
Hanna Staroszczyk ◽  
Izabela Sinkiewicz ◽  
Piotr Bruździak
Keyword(s):  
Bacterial Cellulose ◽  
Food Packaging ◽  
Barrier Properties ◽  
Packaging Material ◽  
Mechanical And Thermal Properties ◽  
Natural Polymers ◽  
Vapour Permeability ◽  
Water Barrier ◽  
Bond Network

AbstractThe food packaging materials from natural polymers including polysaccharides offer an ecologically important alternative to commonly used synthetic, non-biodegradable counterparts. The purpose of this work was to modify of bacterial cellulose (BC) leading to the improvement of its functional properties in terms of use as a food packaging material. Effects of disintegration of BC and addition of montmorillonite (MMT) on its water barrier, mechanical and thermal properties were investigated. Disintegration of BC increased its water vapour permeability (WVP) and thermal stability, but decreased its tensile strength (σ). These changes were closely related to the rearrangement of hydrogen-bond network in the BC structure, resulting in a partial conversion from the Iα to Iβ allomorph. The addition of 2% of MMT did not affect WVP and σ of the disintegrated BC (bBC), while the plasticization of the modified bBC generally decreased WVP, and did not increase σ. The improvement in water barrier properties of bBC modified by adding 2% of MMT in the presence of glycerol was caused by the formation of hydrogen bonds between the components of the composite. The results presented show the potential usefulness of BC modified by disintegration and adding 2% of MMT and 10–15% of glycerol as a food packaging material.

scholarly journals Bioplastic films with unusually good oxygen barrier properties based on potato fruit-juice

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12543-12548
Author(s):  
Simi Poulose ◽  
Ilari Jönkkäri ◽  
Mikael S. Hedenqvist ◽  
Jurkka Kuusipalo
Keyword(s):  
Waste Management ◽  
Industrial Waste ◽  
Fruit Juice ◽  
Potato Starch ◽  
Barrier Properties ◽  
Oxygen Barrier ◽  
Industrial Waste Management ◽  
Starch Industry

Valorization of potato fruit juice, a potato starch industry by-product, by developing biopolymer films that could replace petroleum based alternatives in packaging, providing a greener and sustainable solution to industrial waste management.

scholarly journals Fabrication and characterization of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite

e-Polymers ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 038-046
Author(s):  
Xu Yan ◽  
Wanru Zhou ◽  
Xiaojun Ma ◽  
Binqing Sun
Keyword(s):  
Thermal Stability ◽  
Oxygen Permeability ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Nucleating Agent ◽  
Vapor Permeability ◽  
Casting Method ◽  
Increasing Trend ◽  
Solution Casting Method

Abstract In this study, a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite (MMT/PHBH) was fabricated by solution-casting method. The results showed that the addition of MMT increased the crystallinity and the number of spherulites, which indicated that MMT was an effective nucleating agent for PHBH. The maximum decomposition peak of the biocomposites moved to a high temperature and residue presented an increasing trend. The biocomposites showed the best thermal stability at 1 wt% MMT. Compared with PHBH, 182.5% and 111.2% improvement in elastic modulus and tensile strength were obtained, respectively. Moreover, the oxygen permeability coefficient and the water vapor permeability of MMT/PHBH biocomposites decreased by 43.9% and 6.9%, respectively. It was also found that the simultaneous enhancements on the crystallizing, thermal stability, mechanical, and barrier properties of biocomposites were mainly caused by the formation of intercalated structure between PHBH and MMT.

scholarly journals Starch–Mucilage Composite Films: An Inclusive on Physicochemical and Biological Perspective

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2588
Author(s):  
Mansuri M. Tosif ◽  
Agnieszka Najda ◽  
Aarti Bains ◽  
Grażyna Zawiślak ◽  
Grzegorz Maj ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Barrier Properties ◽  
Edible Films ◽  
Packaging Material ◽  
Polymer Materials ◽  
Synthesis Process ◽  
Packaging Materials ◽  
Packaging Film ◽  
Biodegradable Packaging ◽  
Effective Manner

In recent years, scientists have focused on research to replace petroleum-based components plastics, in an eco-friendly and cost-effective manner, with plant-derived biopolymers offering suitable mechanical properties. Moreover, due to high environmental pollution, global warming, and the foreseen shortage of oil supplies, the quest for the formulation of biobased, non-toxic, biocompatible, and biodegradable polymer films is still emerging. Several biopolymers from varied natural resources such as starch, cellulose, gums, agar, milk, cereal, and legume proteins have been used as eco-friendly packaging materials for the substitute of non-biodegradable petroleum-based plastic-based packaging materials. Among all biopolymers, starch is an edible carbohydrate complex, composed of a linear polymer, amylose, and amylopectin. They have usually been considered as a favorite choice of material for food packaging applications due to their excellent forming ability, low cost, and environmental compatibility. Although the film prepared from bio-polymer materials improves the shelf life of commodities by protecting them against interior and exterior factors, suitable barrier properties are impossible to attain with single polymeric packaging material. Therefore, the properties of edible films can be modified based on the hydrophobic–hydrophilic qualities of biomolecules. Certain chemical modifications of starch have been performed; however, the chemical residues may impart toxicity in the food commodity. Therefore, in such cases, several plant-derived polymeric combinations could be used as an effective binary blend of the polymer to improve the mechanical and barrier properties of packaging film. Recently, scientists have shown their great interest in underutilized plant-derived mucilage to synthesize biodegradable packaging material with desirable properties. Mucilage has a great potential to produce a stable polymeric network that confines starch granules that delay the release of amylose, improving the mechanical property of films. Therefore, the proposed review article is emphasized on the utilization of a blend of source and plant-derived mucilage for the synthesis of biodegradable packaging film. Herein, the synthesis process, characterization, mechanical properties, functional properties, and application of starch and mucilage-based film are discussed in detail.

Thermal and Oxygen Barrier Properties of Chitosan Bionanocomposites by Reinforcement of Calcium Carbonate Nanopowder

2014 ◽  
Vol 30 (8) ◽  
pp. 791-795 ◽  
Author(s):  
Sarat K. Swain ◽  
Satyabrata Dash ◽  
Sudhir K. Kisku ◽  
Rajesh K. Singh
Keyword(s):  
Calcium Carbonate ◽  
Barrier Properties ◽  
Oxygen Barrier

An Investigation of the Barrier Properties and of the Residual Acetaldehyde in Polyethylene Terephthalate Composites

2017 ◽  
Vol 44 (12) ◽  
pp. 19-22
Author(s):  
A.S. Shabaev ◽  
S.Yu. Khashirova ◽  
A.K. Mikitaev ◽  
I.V. Musov ◽  
A.L. Slonov
Keyword(s):  
Carbon Dioxide ◽  
Polymer Composites ◽  
Polyethylene Terephthalate ◽  
Oxygen Permeability ◽  
Gas Permeability ◽  
Polymeric Materials ◽  
Barrier Properties ◽  
Diffusion Cell ◽  
Polybutylene Terephthalate

The diffusion cell to a Tsvet-800 chromatograph for determining the gas permeability of polymeric materials has been optimised. The oxygen permeability and the carbon dioxide permeability of polymer composites based on polyethylene terephthalate and polybutylene terephthalate have been studied. The optimum compositions, combining high barrier properties and a low acetaldehyde content, have been found.

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