Interaction of silica and carbon black fillers with natural rubber/poly(ethylene-co-vinyl acetate) matrix by swelling studies

2007 ◽  
Vol 28 (6) ◽  
pp. 705-712 ◽  
Author(s):  
A. Sujith ◽  
G. Unnikrishnan ◽  
C.K. Radhakrishnan ◽  
M. Padmini
2007 ◽  
Vol 48 (1) ◽  
pp. 198-202 ◽  
Author(s):  
S. Anusree ◽  
A. Sujith ◽  
C.K. Radhakrishnan ◽  
G. Unnikrishnan

1999 ◽  
Vol 72 (2) ◽  
pp. 398-409 ◽  
Author(s):  
Ajay K. Manna ◽  
P. P. De ◽  
D. K. Tripathy ◽  
S. K. De ◽  
M. K. Chatterjee

Abstract Results of bound rubber determination, Monsanto rheometry, solvent swelling studies and measurement of physical properties reveal that high temperature molding of epoxidized natural rubber (ENR) filled with intermediate super abrasion furnace (ISAF) carbon black and surface oxidized ISAF carbon black, in the presence of silane coupling agent, namely, N-(4-vinylbenzyl)-N′-[3-(trimethoxysilyl)propyl]ethane-1,2-diamine monoHCl salt, results in crosslinking of the rubber phase, even in the absence of the vulcanizing agents. Infrared spectroscopic studies show formation of silyl ether, in the case of ISAF carbon black, whereas the oxidized grade forms both silyl ether as well as silyl ester and amide linkage. Oxidation of ISAF carbon black causes an increase in the extent of coupling bond formation.


2010 ◽  
Vol 256 (23) ◽  
pp. 7151-7155 ◽  
Author(s):  
Yong-Hai Zhang ◽  
Bao-Feng Bai ◽  
Jing-Bo Chen ◽  
Chang-Yu Shen ◽  
Jian-Qiang Li

2008 ◽  
Vol 2 (5) ◽  
pp. 382-390 ◽  
Author(s):  
K. Priya Dasan ◽  
G. Unnikrishnan ◽  
E. Purushothaman

2017 ◽  
Vol 37 (3) ◽  
pp. 307-311
Author(s):  
Satheesh Chandran ◽  
Ashok Panayamthatta ◽  
Ravi Varma ◽  
Sujith Athiyanathil

Abstract This work demonstrates a novel simple method to study the accurate real time optical transparency of a crosslinked polymer blend during its swelling in good solvent. Heterogeneous natural rubber (NR) and poly (ethylene-co-vinyl acetate) (EVA) blends were used for this experiment. Aromatic solvents such as benzene, toluene and xylene were used as the probe molecules. Optical transparency of the samples increases with increase in EVA content in the blends during swelling. The penetrant solvent molecular size also affects the optical transparency of the blends. This new method can effectively measure the optical transparency of polymer gels during their swelling. Also, these blends can be a promising material for optical switching.


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