Stress-Strain Properties of Natural Rubber Cross-Linked by Sulfur and Radiation

Comparison of Stress-Strain Properties of Natural Rubber Cross-Linked by Sulfur and Radiation 

Gum (Compound Without Fillers) Sulfur Cured Radiation Cured 

Reinforced by 50 phr HAF Carbon Black Sulfur Cured Radiation Cured 

Obviously, there are many subtle differences in the structure, morphology, or network topology between radiation cured and sulfur cured elastomers, but their physical properties may be nearly equal, provided that precautions are taken to avoid the occurrence of chain scissions. A comparison of radiation cross-linked and sulfur cured natural rubber (gum and carbon-black-reinforced compounds) is in Table 5.4.  

Natural rubber and guttapercha consist essentially of polyisoprene in a s-1,4 and trans-1,4 isomers, respectively. Commercially produced synthetic polyisoprenes have more or less identical structures but reduced chain regularity, although 

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