Study on polymerization of ethylenediaminetetraacetic acid and methyl methacrylate

Abstract

ABSTRACT:The polymerization of ethylenediaminetetraacetic acid (EDTA) with methyl methacrylate(MMA) was prepared using a cerium(IV) redox initiator system at 60ЊC under nitrogen. The microstructures of the obtained polymers were characterized by NMR measurement and the DEPT technique, as well as by infrared spectroscopy. The mechanism of the polymerization reaction was determined from the microstructures of the derived polymers. It showed that the reaction leading to the polymerization formation was the carbon site of the ethylene of the EDTA. It was not the same as that suggested in the literature.

Synthesis and characterization of lithium and magnesium complexes based on [EDTA][PEG400] 2 and [EDTA] 3 [PEG400] 7

“…Peak b corresponds to acetic methylene carbons and peak a to methylene carbons of ethylene groups. [10,26,27] Signals c and d were undoubtedly assigned to carbonyl carbons. [10,26] Finally, peak e was attributed to methyl carbons of esteric groups.…”

“…The signal assignments were performed correlatively on the basis of the spectral investigation reported in the literature for PEG400 and its inferior homologues, [19,20] poly(ethylene oxide)-containing polyesters, [21][22][23][24][25] and EDTA-containing polymers. [9,10,26,27] 3 [PEG400] 7 (see Figure 1) were readily assigned on the basis of data in the literature. The remaining spectral features were clearly attributed to the EDTA moieties present in the copolymer.…”

“…[10,26,27] Signals c and d were undoubtedly assigned to carbonyl carbons. [10,26] Finally, peak e was attributed to methyl carbons of esteric groups. [10] This assignment was supported by the protoncoupled 13 C NMR spectrum depicted in Figure 3b.…”

“…[10,26] Finally, peak e was attributed to methyl carbons of esteric groups. [10] This assignment was supported by the protoncoupled 13 C NMR spectrum depicted in Figure 3b. This measurement shows that peak e is split into a quartet, whilst all the other peaks, which correspond to methylene carbons, are split into triplets.…”

“…[9] Methyl methacrylate copolymers with EDTA functional groups were proposed as suitable supports for the preparation of catalysts. [10] The complexes described here are based on macromolecular systems composed of polyether moieties bonded together through EDTA bridges.…”