Development of Composite Film for Improving Gas Permeable Properties

Generally, a suitable polymer for using as pH indicator packaging should exhibit high porosity to provide a maximum gas permeability which lead to an accurate detection. Ethylene vinyl acetate (EVA) is normally used as such application. However, the gas permeability of EVA was fairly low as 1685.0940 cc/ (m2-day) which not good enough for used as pH indicator packaging application is. To increase a permeability of gas, high porous diatom incorporating with biopolymer was mixed into EVA polymer via internal mixer. It was found that the gas permeability of EVA filled porous diatom/biopolymer was increased up to 4204.2225 cc/ (m2-day). This property is one of the crucial properties for further design for pH indicator packaging in NHAM product.

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A novel soft matter composite material for energy-saving smart windows: from preparation to device application

Journal of Materials Chemistry A ◽

10.1039/c4ta06347c ◽

2015 ◽

Vol 3 (20) ◽

pp. 10738-10746 ◽

Cited By ~ 38

Author(s):

Yanzi Gao ◽

Wenhuan Yao ◽

Jian Sun ◽

Huimin Zhang ◽

Zhendong Wang ◽

...

Keyword(s):

Composite Material ◽

Liquid Crystal ◽

Energy Conservation ◽

Composite Film ◽

Energy Saving ◽

Vinyl Acetate ◽

Soft Matter ◽

Ethylene Vinyl Acetate ◽

Smart Windows ◽

Conservation Efficiency

A novel soft-matter composite film of ethylene-vinyl acetate and liquid crystal with an energy conservation efficiency of 40.4% is developed.

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Synthesis of Biodegradable Copolymers Based on Ethylene Vinyl Acetate and Polylactic Acid

Materials Science Forum ◽

10.4028/www.scientific.net/msf.636-637.819 ◽

2010 ◽

Vol 636-637 ◽

pp. 819-824 ◽

Cited By ~ 4

Author(s):

Isabel Moura ◽

Ana Vera Machado ◽

Regina Nogueira ◽

V. Bounor-Legare

Keyword(s):

Mechanical Properties ◽

Polylactic Acid ◽

Vinyl Acetate ◽

Oxygen Demand ◽

Ethylene Vinyl Acetate ◽

Biodegradable Copolymers ◽

Structure Morphology ◽

Transesterification Catalyst ◽

Internal Mixer ◽

Scanning Electron

In the present study biodegradable copolymers of ethylene vinyl acetate and polylactic acid were synthesized using transesterification reactions, the structure, morphology, mechanical properties and biodegradability of the produced materials were characterized. Ethylene vinyl acetate was modified with polylactic acid in an internal mixer using titanium propoxide as transesterification catalyst. The graft copolymers were characterized by elemental analysis, infrared spectroscopy, rheology, scanning electron microscopy and thermal analysis. Selective extractions for all copolymers were made, and the results indicate that a maximum of 25 % of EVA-g-PLA copolymer was synthesized by this method. Biodegradation tests were carried out using the standard ISO 14851 (1999), which specifies a method for determining the biochemical oxygen demand in a closed respirometer. This procedure allowed to synthesize biodegradable copolymers with mechanical properties similar to conventional polymers.

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The Effect of Caprolactam on Tensile Properties and Morphology of Recycled High Density Polyethylene/Ethylene Vinyl Acetate (RHDPE/EVA) Blends

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1133.211 ◽

2016 ◽

Vol 1133 ◽

pp. 211-215 ◽

Cited By ~ 1

Author(s):

A.R.H. Fatimah ◽

A.G. Supri ◽

Z. Firuz

Keyword(s):

Tensile Strength ◽

Tensile Properties ◽

Vinyl Acetate ◽

High Density Polyethylene ◽

Interfacial Adhesion ◽

Ethylene Vinyl Acetate ◽

High Density ◽

Rotor Speed ◽

Sem Micrograph ◽

Internal Mixer

This paper describes tensile properties, and morphology analysis of different composition of RHDPE and EVA blends were studied. The main goals are to describe the effect of Caprolactam as compatibilizer used to improve the compatibility between RHDPE and EVA. The RHDPE/EVA blends were prepared at 160°C and the rotor speed of 50rpm in an internal mixer. The tensile strength for RHDPE/EVA blends increased, while adding Caprolactam by 6phr in the blend formulation significantly improved the tensile properties. The SEM micrograph show a better interfacial adhesion between RHDPE and EVA phases for RHDEP/EVA/Caprolactam blends than RHDPE/EVA blends.

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