“…In our laboratory, a synchrotron X-ray source has been used to investigate the structures of poly(diallyldimethylammonium chloride-coacrylamide) [P(DADMACl/AM)] gel-sodium alkylsulfate (SC n S) complexes. 7,11 The complexes showed structures of cylindrical hexagonal at n Ն 12, and cubic at n Յ 10, respectively. However, the cubic structure was not analyzed, and the desired charge contents of the copolymer chains were not obtained due to the large difference in the reactivity ratio between the two comonomers.…”