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Short Report


ScienceAsia 9 (1983): 191-196 |doi: 10.2306/scienceasia1513-1874.1983.09.191

 

STUDY OF THE CHEMICAL DEGRADATION OF NATURAL RUBBER AND SYNTHETIC CIS-1,4-POLYISOPRENE BY PHENYLHYDRAZINE-IRON (II) CHLORIDE SYSTEM USING GEL PERMEATION CHROMATOGRAPHY

 

SAUVAROP BUALEK

ABSTRACT: Degradation of cis-1,4-polyisoprene and natural rubber by phenylhydrazine-iron (II) chloride system were investigated in tetrahydrofuran solution at 30 oC in the opened container. Gel permeation chromatography was used to follow the reactions. It was found that the number-average molecular weight of the rubbers were reduced to nearly one-half in the first few hours and the shape of the molecular weight distribution curves was essentially unchanged.

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Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.

Received 10 June 1983