A novel approach to prepare core/shell polymer latex particles with high sulphonate contents

作者：Wang Ji shuai; Hu Yang; Shen Jie; Huang Xin yi; Kan Cheng you^*

来源：Chinese Journal of Polymer Science, 2014, 32(5): 519-523.

DOI：10.1007/s10118-014-1438-5

• Sulphonate-containing particles
• Seeded emulsion polymerization
• Morphology
• Core/shell

Crosslinked x-P(St-MAA) seed latex was first prepared via soap-free emulsion copolymerization of styrene (St) and methyl methacrylic acid (MAA) with divinyl benzene as crosslinker and ammonium persulfate as initiator, and x-P(St-MAA)/x-P(St-NaSS) core/shell latex particles were then synthesized through a novel seeded emulsion copolymerization of St and sodium styrene sulphonate (NaSS) in the presence of water-soluble crosslinker N,N'-methylene bisacrylamide (BAA) using oil-soluble 2,2-azobis isobutyronitrile as initiator. TEM observation indicated that narrow dispersed core/shell latex particles were obtained, and element analysis showed that NaSS unit content in the whole particle and in the shell reached 22.8 wt% and 51.2 wt%, respectively.

• 出版日期2014-5
• 单位清华大学