Radical copolymerization of lithium p-styrenesulfonate (LiSS) was investigated using acrylamide (AAm) as the comonomer in the presence of various salts as additives. The addition of lithium chloride promoted the polymerization reactivity of LiSS, while the addition of lithium bromide and sodium bromide suppressed the copolymerization of LiSS and AAm and completely prevented the spontaneous homopolymerization of AAm. The interactions between lithium cations and functional groups in the monomers and polymers that benefit the copolymerization reactivity is discussed.
- Haruki Uesaka
- Yasuhito Suzuki
- Akikazu Matsumoto
