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Synthesis and characterization of poly[acrylamide‐ co ‐(sodium 4‐styrenesulfonate)] via inverse microemulsion polymerization
Author(s) -
Qiu Jianhua,
Zhang Yanwu,
Meng Xiaohong,
Zhang Haoqin,
Liu Jindun
Publication year - 2010
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2692
Subject(s) - microemulsion , acrylamide , reactivity (psychology) , polymerization , monomer , polymer chemistry , cyclohexane , copolymer , chemistry , pulmonary surfactant , aqueous solution , materials science , emulsion polymerization , chemical engineering , organic chemistry , polymer , medicine , biochemistry , alternative medicine , pathology , engineering
An anionic polyelectrolyte based on acrylamide (Am) and sodium 4‐styrenesulfonate (SSS) was synthesized via the inverse microemulsion polymerization technique. The hydrophilic–lipophilic balance (HLB) values of the surfactant and the composition of the inverse microemulsion system were determined using pseudoternary phase diagrams. The reactivity ratios of Am and SSS in inverse microemulsion polymerization were calculated using the Kelen–Tüdös method. The optimum HLB value of the surfactant for the inverse microemulsion system was 8.58. The composition of the inverse microemulsion system was surfactants (25 wt%), cyclohexane (59 wt%) and aqueous solution of monomers (16 wt%). Am ( r 1 ) and SSS ( r 2 ) reactivity ratios were 0.61 and 1.99, respectively. Monomer reactivity ratios of Am and SSS determined in the present study differ from those reported for solution radical copolymerization. This indicates that the difference in microenvironment in solution and microemulsion plays an important role in governing the reactivity ratios of the monomers. Copyright © 2009 Society of Chemical Industry