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Oxo-degradable

Oxo-degradable masterbatch

Polysharif-Oxo-Deg Masterbatch which can be employed in food packaging as trays and flexible films. The base of the masterbatch is low density polyethylene (LDPE).
The Oxo-Deg. masterbatch is added during the melt processing of the final product in the range of 1 to 2 wt.%, depends on the application and type of the products. Utilizing this product, the final product can be de-grade through two years in environment. Heat and sunlight are the main factors which affect the oxidation process. Therefore, these two parameters can reduce the molecular weight of the polyolefin. Then the shorten molecules can be consumed by the micro-organisms.
Oxo-biodegradable plastics are commonly used for lightweight carrier bags, packaging films and disposable bags. The oxo-degradability is evaluated according to ASTM D6954-04. This product has Iranian national standard according to ISIRI 14417. Our Oxo-deg. Masterbatch, in contrast with other commercialized oxo-degrdable masterbatch, is free from heavy metals, consequently, it will provide the lowest environmental pol-lution.

 

Spercifications

  • Ease of processing for any blown and extruded film products,
  • Without any change in processing parameters,
  • Without and color change
  • Less than two years degradability
  • Free of heavy metals
  • Low cost and affordability

Mechanism

Biodegradation of materials resulting from artificial synthesis, such as conventional plastics, is theoretically possible when the material is broken down into small particles and the molecule mass of the material is sufficiently reduced to enable biodegradation. Factors such as light, humidity, oxygen and temperature determine the degradation rate. In the open environment it may take a long time, up to hundreds of years, for conventional plastics to biodegrade. Plastics marked as "biodegradable" only biodegrade under specific environmental conditions. So called oxo-plastics or oxo-degradable plastics are conventional plastics which include additives to accelerate the fragmentation of the material into very small pieces, triggered by UV radiation or heat exposure.

This accelerated fragmentation would also accelerate biodegradation. Oxo-biodegradation” as the solution to environmental impacts of plastic in the open environment. Oxo-degradable plastic fragments and biodegrades in the open environment without leaving any toxic residues or plastic fragments behind. This first stage of degradation prepares the oxo-degradable plastic for biodegradation by reducing the molecular weight of the plastic to the point where it may be consumed by biological organisms.

In general, these biodegradable plastics contain additives that cause them to decay more rapidly in the presence of light and oxygen (moisture and heat help too). Unlike bioplastics, biodegradable plastics are made of normal (petrochemical) plastics

Catalogue and TDS

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