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Citation: YU He-Ping, LI Si-Dong, XU Kui. Aging Behaviour of Gel and Sol Parts in Epoxidized Natural Rubber[J]. Chinese Journal of Applied Chemistry, ;2004, 21(1): 76-77. shu

Aging Behaviour of Gel and Sol Parts in Epoxidized Natural Rubber

1.
Ministry of Agriculture Key Laboratory of Natural Rubber Processing, South China Tropical Agricultural Product Processing Research Institute, Zhanjiang 524001

Corresponding author: LI Si-Dong,
Received Date: 24 February 2003
Available Online: 10 August 2003
Fund Project: 国家自然科学基金资助项目(59363003) (59363003)

The gel and sol parts in epoxidized natural rubber(ENR) were separated with toluene and 2-pentanone, respectively, and their thermal aging behaviour were studied by FTIR spectrometry. The results indicate that the carbon-carbon double bonds and the epoxy bonds in both gel and sol are destroyed successively on aging process, accompanied with the occurance of the hydroxyl, ether, carbonyl of aldehyde and ketone groups. Along with prolonging the aging time, the aldehyde and ketone are further converted into ester structures. These changes of the functional groups demonstrate the gel is less thermostable than sol in ENR.
- epoxidized natural rubber,
- gel,
- sol,
- thermal aging,
- FT-IR
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