Citation: Ji Shuai Wang, Wei Deng, Yun Shen Chen, Cheng You Kan. Preparation of sulphonate-containing core/shell latex particles via seeded emulsion copolymerization[J]. Chinese Chemical Letters, ;2010, 21(10): 1259-1262. doi: 10.1016/j.cclet.2010.04.019 shu

Preparation of sulphonate-containing core/shell latex particles via seeded emulsion copolymerization

Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, China

Received Date: 26 January 2010

In this study, P(St-MAA)seed latex particles were first prepared via soap-free emulsion polymerization of styrene(St)and methacrylic acid (MAA), then the seed particles were allowed to swell with St at room temperature, and the P(St-MAA)/P(St-NaSS) core/shell latex particles were then synthesized via seeded emulsion copolymerization of St and sodium styrene sulphonate (NaSS) using AIBN as initiator in the presence of N, N'-methylenebisacrylamide (BAA, water-soluble crosslinker). Results showed that the polymerization could be carried out smoothly when the ratio of BAA to total monomers was less than 3 mol%, the narrow dispersed P(St-MAA)seed particles with the diameter of 150 nm and the P(St-MAA)/P(St-NaSS)core/shell latexes with the particle size of about 200 nm were synthesized. When the 25/75 mole ratio of NaSS/(St+MAA)and 2 mol% of BAA were used in the seeded emulsion polymerization, the resulted P(St-MAA)/P(St-NaSS) latex product showed a low weight loss after water extraction, and the NaSS unit content in the whole particle and in the shell reached 11.7 mol% and 34.6 mol%, respectively.
- Seeded emulsion polymerization,
- Sulphonate-containing particles,
- Sodium styrene sulphonate,
- N,N'-Methylenebisacrylamide
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