Basic functionalization of molten linear low-density polyethylene with 2-(dimethylamino)ethyl methacrylate in an intermeshing corotating twin-screw extruder

The effect of rambutan peels flour (RPF) content on the tensile properties of linear low density polyethylene filled with rambutan peel flour was studied. RPF was melt blended with linear low–density polyethylene (LLDPE). LLDPE/RPF blends were prepared by using twin screw extruder at 150°C with the flour content ranged from 0 to 25 wt%. The tensile properties were tested by using a universal testing machine (UTM) according to ASTM D638. The highest tensile strength was pure LLDPE meanwhile the tensile strength LLDPE/RPF decreased gradually with the addition of rambutan peels flour. Young’s modulus of rambutan peels flour filled LLDPE increased with increasing fiber loading. The crystallinity of the blends was significantly reduced with increasing RPF content. Instead, the water absorption increased with the addition of RPF content.

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Influence of novel screw elements on the reactive extrusion of low density polyethylene grafted with maleic anhydride in co-rotating twin screw extruder

10.1063/1.5088308 ◽

2019 ◽

Author(s):

Ma Xiuqing ◽

Zhai Wenbin ◽

Liu Min

Keyword(s):

Maleic Anhydride ◽

Reactive Extrusion ◽

Low Density Polyethylene ◽

Low Density ◽

Twin Screw Extruder ◽

Screw Extruder ◽

Twin Screw

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Functionalization of Low Density Polyethylene with Ricinol-2-oxazoline Methyl Maleate in a Twin-screw Extruder

International Polymer Processing ◽

10.3139/217.0014 ◽

2007 ◽

Vol 22 (2) ◽

pp. 122-131 ◽

Cited By ~ 4

Author(s):

R. Jeziórska

Keyword(s):

Low Density Polyethylene ◽

Low Density ◽

Twin Screw Extruder ◽

Screw Extruder ◽

Twin Screw

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Flame Retardant Low Density Polyethylene with Aluminium Hydroxide/ Commercial Fire Retardants FR01 Synergistic System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.652-654.485 ◽

2013 ◽

Vol 652-654 ◽

pp. 485-489 ◽

Cited By ~ 1

Author(s):

Ni Na Wang ◽

Ding Han Xiang ◽

Pin Shu Mo ◽

Yi Lu

Keyword(s):

Flame Retardancy ◽

Aluminium Hydroxide ◽

Volume Resistivity ◽

Low Density Polyethylene ◽

Low Density ◽

Fire Retardants ◽

Screw Extruder ◽

Limiting Oxygen Index ◽

Twin Screw ◽

Ldpe Composites

Low density polyethylene (LDPE) was modified by the addition of commercial fire retardants FR01 and aluminium hydroxide (ATH). ATH/FR01/LDPE composites were prepared by melt blending and extrusion in a twin-screw extruder. ATH was first modified by a silane coupling agent KH550 then added to LDPE. The flame retardancy, electrical property and thermal behavior of the LDPE composites were investigated by limiting oxygen index (LOI), volume resistivity and thermogravimetric analysis (TGA), respectively. The results indicated that the surface modification of ATH (M-ATH) could greatly improve the dispersibility and compatibility with LDPE matrix. The mechanical property tests showed good mechanical properties of composite, compared with unmodified one, tensile strength and elongation of M-ATH/LDPE were all improved, and the addition of FR01 improved the flame retardancy of ATH/LDPE remarkably. TGA results demonstrate that char yield of M-ATH/FR01/LDPE (30/15/70) reaches 27 wt% at 600 °C in Ar atmosphere.

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MgO-Lignin Dual Phase Filler as an Effective Modifier of Polyethylene Film Properties

Materials ◽

10.3390/ma13030809 ◽

2020 ◽

Vol 13 (3) ◽

pp. 809 ◽

Cited By ~ 4

Author(s):

Karol Bula ◽

Grzegorz Kubicki ◽

Teofil Jesionowski ◽

Łukasz Klapiszewski

Keyword(s):

Lignin Content ◽

Mechanical Tests ◽

Low Density Polyethylene ◽

Low Density ◽

Screw Extruder ◽

Hybrid Filler ◽

Tear Strength ◽

Twin Screw ◽

Time Required ◽

Almost All

Functional magnesium oxide-lignin hybrid materials were obtained via mechanical grinding. Their particle shape and size as well as physicochemical properties were characterized. MgO-lignin materials with biocomponent content (between 20% and 80% amount of total weight of filler) were used as a partially bio-structured modifier of low density polyethylene. The composites with 5% by weight of dual fillers and polyethylene grafted with maleic anhydride were compounded in a twin screw extruder working in co-rotating mode. The prepared blends were cast extruded using a single screw extruder and laboratory cast line. The properties of the obtained films were verified in case of their weldability. The seal strength as well as shear test and tear strength of the welded sheets were examined. The results showed that the shortest equivalent time required to perform correct weld occurred in the system, where the highest amount of lignin was used in hybrid filler MgO-L (1:5 w/w). From mechanical tests of welds, a sharp increase in ultimate seal force was noticed for almost all compositions with lignin, especially where MgO was coupled with a high lignin content. For those composition seal open force raised up to 37.0 N, from the value of 23.6 N, achieved for neat low density polyethylene (LDPE). Tear strength of weld sheets confirmed once more that LDPE composition with MgO-L (1:5 w/w) achieved the highest ultimate force with its value of 71.5 N, and it was ~20.0 N higher than in the case of neat LDPE.

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Mechanical and Optical Properies of Poly Lactic Acid Modified Linear- Low Density Polyethylene / Low Density Polyethylene (Lldpe/Ldpe) Blend Blown Film

International Journal of Mechanical and Industrial Engineering ◽

10.47893/ijmie.2012.1080 ◽

2012 ◽

pp. 122-125

Author(s):

Omveer Singh ◽

Pradeep Upadhyaya ◽

T.k Mishra ◽

Navin Chand

Keyword(s):

Lactic Acid ◽

Polylactic Acid ◽

Low Density Polyethylene ◽

Poly Lactic Acid ◽

Low Density ◽

Melt Blending ◽

Linear Low Density Polyethylene ◽

Blown Film ◽

Twin Screw ◽

Poly Ethylene

Poly lactic acid (PLA) is well known aliphatic poly-esters derived from corn and sugar beets, and degrades into nontoxic compounds in landfill. Melt blending of poly lactic acid and linear low density polyethylene (LLDPE) was performed in an effort to toughen polylactic acid. Melt blending of linear low density polyethylene (LLDPE) and polylactic Acid (PLA) and Low density poly ethylene (LDPE) were performed in a twin screw extruder with post extrusion blown film. The blend compositions were optimized by mechanical properties. On the basis of this, LLDPE 80 wt % LDPE 20 wt% and 1-4 wt% poly lactic acid (PLA) were found to be an optimum composition. The blends were characterized according to their mechanical and optical behavior. This blend may be used for packaging application.

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