scholarly journals Comparative Studies on Solubility and Thermo Dynamics Properties of Natural Rubber Filled with CB/CPKS and CB/APKS Fillers

2021 ◽  
Vol 10 (3) ◽  
pp. 46
Author(s):  
Malomo Dosu ◽  
Olasupo Abdulhakeem Dapo ◽  
Odidi Donald Okpo ◽  
Adewuyi Sulaiman Olalekan ◽  
Egharevba Owen ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Comparative Studies

Comparative Studies on the Crosslinking Reaction of Bis-Maleimides and Bis-Citraconimides in Squalene and Natural Rubber

1998 ◽  
Vol 71 (5) ◽  
pp. 1073-1086 ◽  
Author(s):  
R. N. Datta ◽  
A. G. Talma ◽  
A. H. M. Schotman
Keyword(s):  
Natural Rubber ◽  
Comparative Studies ◽  
Crosslinking Reaction ◽  
Application Data

Abstract A study has been made to differentiate between the crosslinking reaction of bis-maleimides and bis-citraconimides in squalene as well as in natural rubber. Bis-maleimides are found to participate in the crosslinking reaction in the absence of curatives such as accelerators and sulfur. Bis-citraconimides take part in the crosslinking reaction when polysulfidic crosslinks are under the process of degradation. Sulfur and accelerator are required for the formation of polysulfidic crosslinks and hence the presence of sulfur and accelerator are essential for bis-citraconimide crosslinking. The differences in the reactivity and the chemistry of crosslinking are studied and discussed. Some application data are provided in order to elaborate the differences.

Comparative studies by cell culture andin vivo implantation test on the toxicity of natural rubber latex materials

1992 ◽  
Vol 26 (3) ◽  
pp. 339-356 ◽  
Author(s):  
Yoshiaki Ikarashi ◽  
Kazuhiro Toyoda ◽  
Naomi Ohsawa ◽  
Takao Uchima ◽  
Toshie Tsuchiya ◽  
...  
Keyword(s):  
Cell Culture ◽  
Natural Rubber ◽  
Comparative Studies ◽  
Natural Rubber Latex ◽  
Rubber Latex

Comparative studies on crosslinked and uncrosslinked natural rubber biodegradation by Pseudomonas sp.

2006 ◽  
Vol 97 (18) ◽  
pp. 2485-2488 ◽  
Author(s):  
Ram Vinod Roy ◽  
Mithu Das ◽  
Rintu Banerjee ◽  
Anil K. Bhowmick
Keyword(s):  
Natural Rubber ◽  
Comparative Studies ◽  
Pseudomonas Sp

Extraction and identification of fillers and pigments from pyrolyzed rubber and tire samples

1996 ◽  
Vol 54 ◽  
pp. 174-175
Author(s):  
P. Sadhukhan ◽  
J. B. Zimmerman
Keyword(s):  
Zinc Oxide ◽  
Electron Microscope ◽  
Carbon Black ◽  
Natural Rubber ◽  
Transmission Electron Microscope ◽  
Rolling Resistance ◽  
Synthetic Polymers ◽  
Nitrogen Atmosphere ◽  
Transmission Electron ◽  
Curing Agents

Rubber stocks, specially tires, are composed of natural rubber and synthetic polymers and also of several compounding ingredients, such as carbon black, silica, zinc oxide etc. These are generally mixed and vulcanized with additional curing agents, mainly organic in nature, to achieve certain “designing properties” including wear, traction, rolling resistance and handling of tires. Considerable importance is, therefore, attached both by the manufacturers and their competitors to be able to extract, identify and characterize various types of fillers and pigments. Several analytical procedures have been in use to extract, preferentially, these fillers and pigments and subsequently identify and characterize them under a transmission electron microscope.Rubber stocks and tire sections are subjected to heat under nitrogen atmosphere to 550°C for one hour and then cooled under nitrogen to remove polymers, leaving behind carbon black, silica and zinc oxide and 650°C to eliminate carbon blacks, leaving only silica and zinc oxide.

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