Comparative study of the epoxidation of natural and synthetic rubber latices

Derouet D., . and Brosse J-C., . and Mulder-Houdayer S., . Comparative study of the epoxidation of natural and synthetic rubber latices. pp. 1-20. ISSN 1511-1768

Epoxidation performed with performic acid generated in situ from the couple hydrogen peroxide/formic acid was studied for synthetic polyisoprene latex (LIR-700) and natural rubber (NR)latex. Various parameters of the reaction (nature and concentration of surfactant used reaction temperature and quantities of formic acid and hydrogen peroxide used to form performic acid)were studied and the results obtained for the respective latices were compared. At similar epoxidation conditions the results obtained with LIR-700 and NR latices were shown to be very close. NR and LIR-700 latices showed the same behaviour during the epoxidation performed with performic acid. Optimal conditions to carry out epoxidation for the preparation of stable latices were also established. This was achieved when the epoxidation was carried out on latices previously stabilised with 3 p.h.r. of a non-ionic surfactant (Sinnopal NP 307 for example) at atemperature of 60C with equimolar quantities of formic acid and hydrogen peroxide.

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Abstract

Epoxidation performed with performic acid generated in situ from the couple hydrogen peroxide/formic acid was studied for synthetic polyisoprene latex (LIR-700) and natural rubber (NR)latex. Various parameters of the reaction (nature and concentration of surfactant used reaction temperature and quantities of formic acid and hydrogen peroxide used to form performic acid)were studied and the results obtained for the respective latices were compared. At similar epoxidation conditions the results obtained with LIR-700 and NR latices were shown to be very close. NR and LIR-700 latices showed the same behaviour during the epoxidation performed with performic acid. Optimal conditions to carry out epoxidation for the preparation of stable latices were also established. This was achieved when the epoxidation was carried out on latices previously stabilised with 3 p.h.r. of a non-ionic surfactant (Sinnopal NP 307 for example) at atemperature of 60C with equimolar quantities of formic acid and hydrogen peroxide.

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Item Type:	Article
AGROVOC Term:	Rubber
AGROVOC Term:	Synthetic rubber
AGROVOC Term:	Natural rubber
AGROVOC Term:	Polymers
AGROVOC Term:	Elastomers
AGROVOC Term:	Latex
AGROVOC Term:	Chemicals
AGROVOC Term:	Stability
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23091

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