Radiation dose required for the vulcanization of natural rubber latex via hybrid gamma radiation and peroxide vulcanizations

To enhance the crosslinking of prevulcanized natural rubber latex, combination of Irradiation and peroxide vulcanizations were used. Through this method, hexanediol diacrylate (HDDA) from irradiation vulcanization acted as the main sensitizer, while cumene hydroperoxide (CHPO) from peroxide vulcaniz...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-06, Vol.555 (1), p.12026
Main Authors: Ibrahim, Sofian, Badri, Khairiah, Ratnam, Chantara Thevy, Ali, Noor Hasni M., Munir, Muhammad Abdurrahman
Format: Article
Language:English
Subjects:
Antioxidants
Crosslinking
Cumene
Cumene hydroperoxide
Food irradiation
Gamma rays
Latex
Mechanical properties
Natural rubber
Radiation
Radiation dosage
Rubber
Tensile strength
Vulcanization
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Summary:To enhance the crosslinking of prevulcanized natural rubber latex, combination of Irradiation and peroxide vulcanizations were used. Through this method, hexanediol diacrylate (HDDA) from irradiation vulcanization acted as the main sensitizer, while cumene hydroperoxide (CHPO) from peroxide vulcanization would act as the co-sensitizer. The effects of irradiation doses on the mechanical properties of latex film were investigated. 16 kGy irradiation dose, 2.5 parts perhundred rubber (pphr) of HDDA, 0.1 pphr of CHPO and 2.5 phr of Aquanox LP antioxidant were found to be the optimum conditions for compounding formulation. The rubber film obtained had tensile strength, modulus at 500% and modulus at 700% of 27.7, 3.5 and 12.4 MPa respectively, which is more than 21% increment compared to control film. Besides, the crosslink percentage of the rubber film showed 7 % increment from 90.7% to 97.7%.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/555/1/012026