The cationic monomers, MPDMAC 16 and MPDMAC 18 , were obtained by quaternization of methacrylamidopropyl– N , N ′‐dimethylamine with n ‐alkyl iodides (1‐iodohexadecane and 1‐iodooctadecane) in ethyl acetate. Hydrophobic ionomers of MPDMAC 16 and MPDMAC 18 with N‐substituted acrylamides were prepared at 60 ± 0.1°C in DMF using AIBN initiator. The cationic monomers and ionomers were characterized by 1 H‐ and 13 C‐NMR spectroscopy. The copolymer composition was evaluated from elemental analysis data using carbon/nitrogen (C/N) ratio. The molecular weight distributions of ionomers were obtained from GPC analysis. Both the dilute solution and concentrated solution properties of ionomers were studied by viscometry at 30°C.
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Pazhanisamy et al. (2005) studied this question.
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