Kinetics Study of Photopolymerization of Surfactant Monomer (Surfmer) DMBAC

doi:10.7517/j.issn.1674-0475.2009.05.351

Abstract

Abstract: Kinetic behaviors of the homopolymerization of(N,N-Dimethyl-N-methacryloyl oxyethyl-N-benzyl)ammonium chloride(DMBAC) and the copolymerization between DMBAC and AM were studied.Polymerizations were carried out above the critical micelle concentration(CMC) of DMBAC,and the initiation process was carried out photochemically using 2,2’-Azobis(2-methylpropionamidine) dihydrochloride(AIBA)as a photoinitiator.The results indicate that the rate of the homopolymerization is proportional to the concentration of photoinitiator and monomer with exponents of 0.29 and 0.89,respectively,the apparent activation energy is about 13.74 kJ/mo1.The rate of copolymerization is proportional to the concentration of photoinitiator and monomers with exponents of 0.82 and 0.83,respectively,the apparent activation energy is about 10.97 kJ/mo1.The reactivity ratios of r₁ 0.27 for AM and r₂ 2.00 for DMBAC were also obtained,which suggests that AM prefers to form copolymers whereas DMBAC produces homopolymers.

Key words: photopolymerization, kinetics, apparent activation energy, reactivity ratio, colloid titration method

CLC Number:

LI Wan-gang, WANG Gui-xia, ZHANG Yu-xi, LI Zhen-quan, CAO Xu-long, SONG Xin-wang, WU Fei-peng. Kinetics Study of Photopolymerization of Surfactant Monomer (Surfmer) DMBAC[J]. Imaging Science and Photochemistry, 2009, 27(5): 351-360.

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