Abstracts This paper examines the synthesis of a toughened elastomer fromVernonia galamensis seed oil by reacting vernonia oil with vernonia oil‐derived suberic acid (octanedioic acid), and cross‐linking the pre‐polymer in the immediate presence of cross‐linked polystyrene preparedin situ. The paper also demonstrates that the progress of reaction can be followed by monitoring the generation of hydroxyl groups using infrared spectroscopy. Analysis of some crystalline material on the cooler parts of the reaction vessels revealed the presence of component fatty acids of vernonia oil. Transmission electron microscopy characterization of the synthesized toughened elastomer suggests that vernonia oil‐suberic acid polyester and polystyrene polymer are interpenetrating.
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Afolabi et al. (1989) studied this question.
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