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Citation: Li Sidong, Yu Heping, Peng Zheng, Chen Ying, Li Peisen. Thermal Aging of Epoxidized Natural Rubber by FTIR[J]. Chinese Journal of Applied Chemistry, ;1999, 16(2): 115-116. shu

Thermal Aging of Epoxidized Natural Rubber by FTIR

1.
South China Tropical Agricultural Products Processing Research Institute, Zhanjiang 524001

Received Date: 14 July 1998
Available Online: 5 December 1998
Fund Project: 国家自然科学基金资助项目(59363003) (59363003)

The thermal oxidative and thermal aging behaviour of epoxidized natural rubber(ENR) have been studied by FTIR. The results showed that the thermal oxidative aging reaction of ENR in air is an autocatalytic oxidation, the aging destruction occurrs in the epoxy and carbon-carbon double bonds of the ENR molecule and the products of aging are alcohols, aldehydes, ketones, carboxylic acids and esters. The destruction of double bonds is more serious than that of epoxy bonds in the earlier stage, but in the later stage the destruction occurs mainly in epoxy bonds. The thermal aging of ENR in vacuum is also an autocatalytic reaction, the products of aging are similar to that after thermal oxidative aging, but the destruction of epoxy bonds always takes place at first.
- epoxidized natural rubber,
- thermal aging,
- differential FTIR
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