Gelation of poly(vinyl chloride) inside a single screw extruder and its effect on product properties

2018 ◽  
Vol 25 (S1) ◽  
pp. E174-E180 ◽  
Author(s):  
Abdullah Demirci ◽  
Ismail Teke ◽  
Ali Goger ◽  
Elif Canbaz ◽  
John Vlachopoulos
Keyword(s):  
Vinyl Chloride ◽  
Screw Extruder ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Poly Vinyl Chloride

The extrusion of plasticized poly(vinyl chloride) in an extruder with a modified feed zone. Part 1: extrusion process

2015 ◽  
Vol 35 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Janusz W. Sikora ◽  
Bronisław Samujło ◽  
Andrzej Stasiek
Keyword(s):  
Vinyl Chloride ◽  
Experimental Studies ◽  
Extrusion Process ◽  
Screw Extruder ◽  
Pocket Depth ◽  
Single Screw Extruder ◽  
Poly Vinyl Chloride ◽  
Feed Zone ◽  
Process Energy ◽  
Opening Width

Abstract The work presents the results of experimental studies of plasticized poly(vinyl chloride) (PVC) extruded by a single-screw extruder with a modified feed section. The variable factors were the feed opening width, the feed pocket depth in the extruder barrel, and the rotational speed of the screw. The following parameters were studied: extrudate temperature Tw (°C), screw torque M (Nm), polymer mass flow rate G (kg/h), unit consumption of energy supplied to the extruder Ejc (J/g), and extrusion process energy efficiency κ (%). It was found that the increase in the depth of the pocket and the decrease in the width of the feed opening influence the extrusion process in a positive way.

Production and Characterization of Porous Starch Granule and Poly(butylene adipate-co-terephthalate) Blend as a Bio-Composite

2012 ◽  
Vol 550-553 ◽  
pp. 1513-1521
Author(s):  
Sirirat Thothong ◽  
Klanarong Sriroth ◽  
Rattana Tantatherdtam ◽  
Amnat Jarerat
Keyword(s):  
Starch Granule ◽  
Rice Starch ◽  
Starch Granules ◽  
Screw Extruder ◽  
Elongation At Break ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Scanning Electron ◽  
Granular Starch

To improve the miscibility of native rice starch granules and poly(butylene adipate-co-terephthalate)(PBAT), rice starch was hydrolyzed by a mixture of α-amylase and amyloglucosidase. The obtained porous rice granular starch was then mechanically blended with PBAT by single screw extruder. Many pits and holes on the surface of starch granules were observed by scanning electron microscopy (SEM). The rough surface of the rice starch granules improved the compatibility of the polymers in the blends, which consequently increased the tensile strength and the elongation at break. In addition, SEM also revealed that the porous granules were homogeneously distributed in the polymer matrix with no appearance of gaps.

scholarly journals Characteristics of nanoclay reinforced starch biocomposites through the extrusion process

2018 ◽  
Vol 204 ◽  
pp. 00008
Author(s):  
Heru Suryanto ◽  
Alfian Widi Rahmawan ◽  
Solichin ◽  
Sahana Rizki Tata ◽  
Uun Yanuhar
Keyword(s):  
Tensile Strength ◽  
Functional Group ◽  
Extrusion Process ◽  
Cassava Starch ◽  
Diffraction Peak ◽  
Screw Extruder ◽  
Materials Engineering ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Composite Properties

The development of materials engineering has led to many significant discoveries one of which is biocomposite with its diverse applications. The addition of reinforcing materials in biopolymers improves the composite properties. This study aimed at investigating the effect of adding nanoclay on the tensile strength, morphology, functional group, and structure of extruded biocomposites with cassava starch matrix. This experimental research involved different concentrations of nanoclay i.e. 0%, 2.5%, 5%, 7.5%. The extrusion process was performed using a single screw extruder at 120°C. The samples were characterized by tensile testing, XRD, and SEM. The biocomposite reinforced with 5% nanoclay had the highest tensile strength of 10.8 MPa. The highest diffraction peak at 2θ of 19.4° appeared in the sample added with 5% nanoclay. The addition of excessive amounts of nanoclay can hinder the formation of exfoliated structures.

scholarly journals IMPROVING THE PROPERTIES OF MEAT ADDITIVES PRODUCED FROM DIFFERENT SOY BEAN BLENDS BY THE SINGLE SCREW EXTRUDER

2013 ◽  
Vol 30 (1) ◽  
pp. 223-242
Author(s):  
M. A. Morcos ◽  
B. M. A. Amer ◽  
H. K. El-Manawaty ◽  
M. M. H. Zakzouk
Keyword(s):  
Screw Extruder ◽  
Single Screw ◽  
Single Screw Extruder
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