Morphology and tensile properties of high-density polyethylene/natural rubber/thermoplastic tapioca starch blends: The effect of citric acid-modified tapioca starch

2011 ◽  
Vol 125 (1) ◽  
pp. 768-775 ◽  
Author(s):  
A. W. M. Kahar ◽  
H. Ismail ◽  
N. Othman
Keyword(s):  
Citric Acid ◽  
Natural Rubber ◽  
Tensile Properties ◽  
High Density Polyethylene ◽  
High Density ◽  
Tapioca Starch ◽  
Starch Blends ◽  
Modified Tapioca Starch

The Effect of Citric Acid on the Mechanical Properties of Thermoplastic Tapioca Starch/High Density Polyethylene/Natural Rubber Blends

2014 ◽  
Vol 679 ◽  
pp. 292-299
Author(s):  
Mohamad Kahar Ab Wahab ◽  
H. Ismail ◽  
N.Z. Noriman ◽  
H. Kamarudin ◽  
A.M. Mustafa Al Bakri
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Citric Acid ◽  
Natural Rubber ◽  
High Density Polyethylene ◽  
High Density ◽  
Elongation At Break ◽  
Tapioca Starch ◽  
Rubber Blends ◽  
Mechanical And Physical Properties

Effects of citric acid on the mechanical properties of thermoplastic tapioca starch/high density polyethylene/natural rubber (HDPE/NR/TPS) blends were investigated. The ratio between HDPE/NR was fixed at 70/30 and used as a matrix system. TPS loadings with and without modification with citric acid (CA) were varied from 0% to 30wt%. Mechanical and physical properties of blends were evaluated as a function of TPS loadings modified with and without CA. The tensile strength, Young’s modulus and elongation at break were found to decrease with increasing TPS content. However an improvement in the tensile strength for TPS modified with CA at 5%, 10% and 20% TPS loadings was observed. The degree of TPS adhesion and dispersion in HDPE/NR blends were determined by scanning electron microscope (SEM).Keywords; HDPE/NR/TPS, citric acid, tensile properties, morphology.

Tensile Properties of Wollastonite Filled High Density Polyethylene/Natural Rubber Composites

2015 ◽  
Vol 754-755 ◽  
pp. 215-219
Author(s):  
Ismail Yuhaida ◽  
Husseinsyah Salmah ◽  
Hanafi Ismail ◽  
Zainuddin Firuz
Keyword(s):  
Tensile Strength ◽  
Natural Rubber ◽  
Tensile Properties ◽  
High Density Polyethylene ◽  
High Density ◽  
Inorganic Filler ◽  
Rotor Speed ◽  
Rubber Composites ◽  
Elongation At Break ◽  
Natural Rubber Composites

Wollastonite is one type of inorganic filler. The effects of wollastonite loading on tensile properties of wollastonite (WS) filled high density polyethylene (HDPE)/Natural Rubber (NR) composites was studied. The HDPE/NR/WS composites were prepared by using Brabender EC Plus at a temperature of 180 °C with rotor speed of 50 rpm for 10 min. It was found that the increasing of wollastonite loading had decreased the tensile strength and elongation at break, whereas the Young’s modulus of the HDPE/NR/WS composites had increased with the increasing of wollastonite loading.

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