Vegetable oil is readily available and inexpensive, can be used to synthesise various types of polymers. In our present study, epoxidised punnal oil has been synthesised from punnal oil via peroxy acetic acid generated ‘insitu’ by treating acetic acid with hydrogen peroxide as oxygen donor. The epoxidation is catalysed by using sulphuric acid. The epoxidation is confirmed by iodine value, oxirane oxygen analysis, fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and thin layer chromatography (TLC) analysis.Natural fibers such as jute, sisal, banana, rice husk etc are locally available in abundance and have excellent physical and mechanical properties and can be used more effectively in the development of composite materials for various applications. Epoxy composite samples are prepared from the natural fiber with different ratios using triethylamine hardener and pthaleic anhydride. The mechanical properties viz. tensile strength and the physical properties observed are discussed in detail
Punnal oil is non-edible oil and is extracted from the seed oil of the Calophyllum inophyllum tree. Punnal oil is easily available, less toxic, inexpensive etc that can be used for the synthesis of polyesters. Punnal oil based polyester sheet was synthesised by treating punnal oil with peroxyacetic acid followed by the addition of hydrogen peroxide. The synthesised epoxidised punnal oil was heated with phthalic anhydride and cured in the presence of benzoyl peroxide and dimethyl aniline. The glass fibre reinforced polyester composites were synthesised using punnal oil based polyester resin with glass fibres of varying compositions. The spectral studies such as FTIR and 1 H NMR analysis, the mechanical properties, scanning electron microscope analysis, soil burial test and antimicrobial test were evaluated. It has been evaluated that the variation of composition of fibres influences the mechanical properties and degradation rate.
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