MANUFACTURING OF BIODEGRADABLE POLYETHYLENE. PRESENTED BY:- HASAN IJTABA KHAN MAFTUN 09-PE-12 FAISAL NADEEM 09-PE-07 KHAWAJA OWAIS KAMAL 09-PE-14 SYED HASSAN SAEED 09-PE-34 AHMED IMRAN QUREISHI 09-PE-03. BIODEGRADATION.
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PRESENTED BY:- HASAN IJTABA KHAN MAFTUN 09-PE-12 FAISAL NADEEM 09-PE-07 KHAWAJA OWAIS KAMAL 09-PE-14 SYED HASSAN SAEED 09-PE-34 AHMED IMRAN QUREISHI 09-PE-03
or anaerobically .
cornstarches are high-amylose cornstarches;
one has 50% to 55% amylose, while the second
has 70% to 75%. Their size ranges between 5 microns and 20 microns
High-amylose starches also have an irregular shape, but tend to be smooth. Some of these are even rod-shaped. High-amylose starches have a narrower size range: 5 to 15 microns, or even 10 to 15 microns, depending on the variety.
It is to be expected that if biodegradable plastics began to occupy a significant market share of the plastics market in the world that some material would end up in plastics reprocessing facilities. This could have significant effects on the sorting procedures required and the quality of recycled end products.
density polyethylene film
was under bioactive soil
for almost 40 years, the
surface of the film shows
signs of biodegradation
with the molecular weight dropping
by half the original.
The rate of biodegradation in marine environments is affected by the water temperature.
Plastic litter causes aesthetic problems as well as danger to wildlife resulting from entanglement and ingestion of plastic packaging materials and lightweight bags. Wildlife losses are an issue for the conservation of biodiversity, and losses due to litter have caused public concern.
to the BRABENDER PLASTICORDER.
manually cut with the help of a cutter to
have it in a shape of a strip.
remove the last traces of the material left in the
barrel in the last processing operation.
at the machine are slightly increased as the
content of starch is greater as compared with
the previous composition. Once the desired
temperature range has been achieved,
the strips of the proposed formulation have
Machine = Electronic Densimeter SD-120L
Units = grams / cubic centimeter
MFI = Mean Value x Factor
MFI = 0.8544 x 3.33
MFI = 2.5623 grams / 10 minutes
MFI = Mean Value x Factor
MFI = 0.485 x 3.33
MFI = 1.61505 grams / 10 minutes
Machine = Hot Stage Microscope
Adapted from Watson 1992