Sri Chandrashekarendra Saraswathi Viswa Maha Vidhyalaya University Kanchipuram Tamil Nadu India

Head of Department of Chemistry Pachaiyappa College for Men, Kanchipuram Tamil Nadu India

Arulmigu Meenakshi Amman College of Engineering Vadamavandal Tamil Nadu India

Email:-rajendranv1967@gmail.com

The kinetics of phase-transfer catalyzed radical polymerization of benzyl methacrylate (BMA) using potassium proxydisulphate (PDS) as water soluble initiator and 1,4-dihexadecylbenzopyrazine-1,4-diium bromide as multi site phase-transfer catalyst(MPTC) has been investigated in ethyl acetate / water two phase system assisted by ultrasound irradiation at constant temperature 70 + 1°C under nitrogen atmosphere. The rate of polymerization increases with an increase in concentrations of BMA, PTC and PDS. The order with respect to [BMA], [MPTC], and [PDS] were found to be 1.019, 1.098 and 0.502 respectively. Based on the observed results a suitable mechanism has been proposed to account for the experimental observations followed by a discussion on its significance.

Department of Chemistry, Dayanand Girls P.G. College, Kanpur (India)
E-mail : shashi.agrwl@gmail.com

The study was aimed at evaluating the phytochemical analysis of benzene extract of Hibiscus rosa sinensis flowers. The extract was found to contain large amounts of phenolic compounds, alkaloids and flavonoids. The GC-MS study carried out showed the presence of phytochemicals like phosphoric acid, p-hydroxyphenyl (RT : 13.049) Squalene (RT : 41.55) and 1-iodoundecan (RT : 47.126).