Synthesis and Characterization of Poly(methyl acrylate)-grafted-Sodium Salt of Partially Carboxymethylated Tamarind Kernel Powder

J.H. Trivedi1,*,, J.R. Jivani2,, K.H. Patel3, and H.C. Trivedi4,5,

1P.G. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar-388120, India

2Glenmark Pharmaceuticals, North Carolina, U.S.A.

3Institute of Science Technology for Advanced Studies & Research (ISTAR), CVM University, Vallabh Vidyanagar-388120, India

4Team Lease Skills University, ITI Campus, ITC Building, Tarsali Road, Vadodara-390009, India

5Parul Institute of Applied Sciences, Parul University, Limda, Vadodara-391760, India

*Corresponding author: Fax: +91 2692 236475; Tel: +91 2692 226856 (O), Extn. 214; E-mail: drjignesh2575@yahoo.co.in

Abstract

Ceric ammonium nitrate (CAN)-initiated graft copolymerization of methyl acrylate (MA) onto sodium salt of partially carboxymethylated tamarind kernel powder (Na-PCMTKP,`D`S = 0.15) was studied in an aqueous medium by solution polymerization technique. The growth of the graft reaction was monitored gravimetrically. The role of various synthesis variables on the grafting yields was examined to achieve the maximum graft yields (%G = 278.27, %GE = 94.38, %Hp = 5.62) and the influence of the synthesis variables in the graft copolymerization has been discussed. The reactivity of methyl acrylate (MA) towards graft copolymerization was compared with that of acrylonitrile (AN) on the basis of the results obtained from the earlier studies and plausible explanation was furnished for the observed reactivity of both the monomers towards grafting. The evaluated optimized reaction conditions were utilized to study the effect of reaction medium on grafting and it was found that reaction medium plays an important role in graft copolymerization. In order to ascertain the grafting, characterization of the samples made by FTIR, TGA and SEM was conducted. The synthesized novel graft copolymer may find potential application to be used as metal adsorbents.

Keywords

Sodium salt, Carboxymethylated tamarind kernel powder, Methyl acrylate, Ceric-initiated, Graft copolymerization.

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