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Preparation, development and characterization of Poly(lactic acid) - High density polyethylene polymer blends

تحضير و تطوير مزائج بوليميرية بولي حمض اللّبن ( PLA ) - بولي ايتيلين عالي الكثافة ( HDPE ) و توصيفها

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 Publication date 2017
and research's language is العربية
 Created by Shamra Editor




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The aim of this work is to study the rheological and mechanical properties of Poly(lactic acid) and High density polyethylene and blends (PLA/HDPE) in the molten state with recpect to shear stress, temperature and blends compositions using brabender mixer.



References used
Lundquist L, Manson J, Leterrier Y, Sunderland P (2001) Life Cycle Engineering of Plastics:Technology, Economy and Environment. Elsevier Science and Technology Books, ISBN: 0080438865
Randall.T, Das.S (1991) Plastic waste management, control, recycling and disposal. Noyes Data Corporation, New Jersey, ISBN:O-8155-1285-1
Shalaby.W.S, Karen.J.L.Burg (2005) Absorbable and biodegradable polymers. Advances in polymeric biomaterials series, CRC PRESS, Boca Raton London New York Washington, D.C. , ISBN:0-203-58651-4, Taylor&Francis e-library
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The aim of this work is the preparation of a biodegradable polymeric blend (LDPE/AD+S) to be used for eco-friendly packaging purposes. The polymer matrix consists mainly of low density polyethylene( LDPE), starch (S), and low quantities of additiv es (AD) as compatibilizers. The additives are: maleic acid, acetic acid, benzoyl peroxide, and zinc stearate. The polymer blend LDPE/AD+S was prepared by extrusion, in three compositions according to the percentage of starch (15,20,40%). Then, films were prepared from the blend by thermal hydraulic compression to study their microstructure by optical microscopic at magnification of 055 The results showed that the starch granules were homogeneously distributed within the polymer matrix, and the compatibility additives played an important role in enhancing the microstructure of the prepared blends. The results also indicate that the starch promotes the onset of the bioegradation process.
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In the present work, the rheological and mechanical properties of polypropylene /thermoplastic starch (PP/TPS) and acrylonitril-butadienestyrene/ thermoplastic starch (ABS/TPS) blends were investigated. Starch was plasticized using glycerol, and b lends were prepared using a laboratory scale with single screw extruder. Rheological properties of the prepared blends were determined using a capillary rheometer. Mechanical properties were studied in term of tensile tests, stress at break, strain at break and Young's modulus were determined.
The aim of this research is to study the absorptive effect of high density (HDPE) polyethylene pipes for the hydrocarbon compounds on the characteristic (Force, Elongation) curves. To verify this, we immerse some parts of the pipe in different hydroc arbon mediums containing gasoline, diesel, and motor oils of (10 and 40) calibre. The result show that these compounds have a bad effect on the submission force, neck formation, and damage force. The experimental results also show that motor (engine) oils have a similar effect on gasoline despite low absorption percentages.
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