The effect of chitosan loading on the curing characteristics, mechanical and morphological properties of chitosan-filled natural rubber (NR), epoxidised natural rubber (ENR) and styrene-butadiene rubber (SBR) compounds

2011 ◽  
Vol 30 (7) ◽  
pp. 784-790 ◽  
Author(s):  
H. Ismail ◽  
S.M. Shaari ◽  
N. Othman
Keyword(s):  
Natural Rubber ◽  
Morphological Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Curing Characteristics ◽  
Styrene Butadiene

Natural Rubber/Styrene Butadiene Rubber/Recycled Nitrile Glove (NR/SBR/rNBRg) Ternary Blend: Curing Characteristics and Swelling Test

2013 ◽  
Vol 594-595 ◽  
pp. 634-638 ◽  
Author(s):  
N.Z. Nik Yahya ◽  
N.Z. Noimam ◽  
Hanafi Ismail ◽  
Mohd Arif Anuar Mohd Salleh ◽  
Santiagoo Ragunathan
Keyword(s):  
Natural Rubber ◽  
Swelling Behavior ◽  
Styrene Butadiene Rubber ◽  
Ternary Blend ◽  
Butadiene Rubber ◽  
Maximum Torque ◽  
Curing Characteristics ◽  
Cure Time ◽  
Styrene Butadiene ◽  
Minimum Torque

Curing characteristics and swelling behavior of natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) blends were investigated. Eleven composition ratio; 50/50/0, 50/40/10, 50/30/20, 50/20/30, 50/10/40, 50/0/50, 40/50/10, 30/50/20, 20/50/30, 10/50/40, and 0/50/50 of SMRL/SBR/rNBRg with the size of rNBRg ; 2.5 3.0 cm2 were prepared by using two roll mill at room temperature. Cure characteristics such as scorch time,t2, cure time,t90, minimum torque, ML, maximum torque, MH, and swelling behavior of SMRL/SBR/rNBRg ternary blends were examined. Results indicated that the scorch time and maximum torque of the NR/SBR/rNBRg blends decreased with increasing rNBRg content. The minimum torque of the blends increased as rNBRg content increased. The cure time of NR/SBR/rNBRg blends show a unique trend, which are depending on the domain rubber content. The increment in rNBRg content decreased the crosslink density of NR/SBR/rNBRg blends.

Effect of Recycled Nitrile Glove (rNBRg) Particle Sizes on Curing Characteristics and Physical Properties of Natural Rubber/Styrene Butadiene Rubber/Recycled Nitrile Glove (NR/SBR/rNBRg) Blends

2015 ◽  
Vol 815 ◽  
pp. 54-58 ◽  
Author(s):  
N.Z. Nik Yahya ◽  
Nik Noriman Zulkepli ◽  
Hussin Kamarudin ◽  
Hanafi Ismail ◽  
Sam Sung Ting ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Crosslink Density ◽  
Styrene Butadiene Rubber ◽  
Particle Sizes ◽  
Butadiene Rubber ◽  
Maximum Torque ◽  
Curing Characteristics ◽  
Cure Time ◽  
Styrene Butadiene ◽  
Minimum Torque

Effects of different particle sizes of recycled nitrile glove (rNBRg) on curing characteristics and physical properties of natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) blends were studied. The particle sizes of rNBRg were differentiated by the method of producing. S1 was obtained by cutting the rNBRg (whole glove) into smaller sheet; S2 was obtained by passing rNBRg through 2 rolls mill for 10 times; S3 was obtained by passing rNBRg through 2 rolls mill for 10 times and then mechanically grinded. NR/SBR/rNBRg blends were prepared at 50/30/20 composition using two roll mill at room temperature, with different particle sizes, rNBRg (S1), rNBRg (S2) and rNBRg (S3). Scorch time, cure time, minimum torque, maximum torque, crosslink density and hardness of the blends were examined. Results indicated that scorch time, cure time and minimum torque decreased as the rNBRg particle size decreased, while maximum torque and crosslink density increased. The rigidity of NR/SBR/rNBRg blends increased when smaller rNBRg particles were used, which explained the increased in hardness and decreased in resilience of the blends.

Tensile Behavior after Oxidative Aging of Gum and Black-Filled Vulcanizates of SBR and NR

1999 ◽  
Vol 72 (4) ◽  
pp. 721-730 ◽  
Author(s):  
G. R. Hamed ◽  
J. Zhao
Keyword(s):  
Tensile Strength ◽  
Natural Rubber ◽  
Tensile Behavior ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Oxidative Aging ◽  
Prolonged Aging ◽  
Aging Period ◽  
Early Aging ◽  
Styrene Butadiene

Abstract Typical sulfur-cured vulcanizates of styrene-butadiene rubber (SBR) and natural rubber (NR) were prepared, and subjected to air-oven aging at 100 °C. Gum specimens exhibited an initial aging period in which stiffness was unchanged, while tensile strength and strain-to-break were significantly reduced. In contrast, black-filled vulcanizates stiffened during early aging. After intermediate aging times, NR specimens softened, while SBR stiffened. With prolonged aging, all compositions became hard and inextensible.

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