Citation: J. H. Trivedi, M. D. Thaker, H. C. Trivedi. Photo-induced Synthesis and Characterization of Poly(methyl methacrylate) Grafted Sodium Salt of Partially Carboxymethylated Guar Gum[J]. Chinese Journal of Polymer Science, ;2014, 32(12): 1690-1703. doi: 10.1007/s10118-014-1544-4 shu

Photo-induced Synthesis and Characterization of Poly(methyl methacrylate) Grafted Sodium Salt of Partially Carboxymethylated Guar Gum

1.
P.G. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat State, India

Received Date: 27 March 2014
Revised Date: 29 May 2014

Photo-induced graft copolymerization of methyl methacrylate (MMA) onto sodium salt of partially carboxymethylated guar gum (Na-PCMGG, DS= 0.291) was carried out in an aqueous medium using ceric ammonium nitrate (CAN) as photoinitiator to synthesize a novel graft copolymer, Na-PCMGG-g-PMMA, which may find its potential application as a metal adsorbent. The influences of synthesis variables such as concentrations of photoinitiator (CAN), nitric acid and monomer (MMA) as well as reaction time, temperature and amount of substrate on the grafting yields were studied and the reaction conditions for optimum photo-grafting were evaluated. At optimum concentration, the maximum values of the grafting yields achieved were G = 271.61% and GE = 63.89%. The experimental results were found to be in very good agreement with the proposed kinetic scheme. The photo-graft copolymerization of MMA onto Na-PCMGG (DS = 0.291) was also carried out in the presence and absence of ultraviolet radiation for studying the efficiency of the photoinitiator. The influence of carboxymethyl groups introduced onto the guar gum molecules with regard to its behavior towards ultra-violet radiation induced grafting with MMA was also investigated. Photo-grafting process was confirmed and the products were characterized with the help of the spectroscopic (1H-NMR and FTIR) and SEM techniques.
- Photo-induced grafting,
- Methyl methacrylate,
- Sodium salt of partially carboxymethylated guar gum,
- Optimum reaction conditions,
- Characterization
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沈阳化工大学材料科学与工程学院沈阳 110142