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Vol. 26 No. 23 (2014)

Copyright (c) 2014 Yebang Tan*, Hong Zhang, Fawen Liu, Minggang Wang

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Synthesis and Aggregation Behaviour of Thermo-Sensitive Copolymer of N-Isopropylacrylamide and Sodium Vinylsulphonate

https://doi.org/10.14233/ajchem.2014.16774
Yebang Tan*
Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China *Corresponding author: Fax: +86 531 88564464; Tel: +86 531 88363502; E-mail: ybtan@sdu.edu.cn; ybtan@126.com
Hong Zhang
Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China *Corresponding author: Fax: +86 531 88564464; Tel: +86 531 88363502; E-mail: ybtan@sdu.edu.cn; ybtan@126.com
Fawen Liu
Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China *Corresponding author: Fax: +86 531 88564464; Tel: +86 531 88363502; E-mail: ybtan@sdu.edu.cn; ybtan@126.com
Minggang Wang
Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China *Corresponding author: Fax: +86 531 88564464; Tel: +86 531 88363502; E-mail: ybtan@sdu.edu.cn; ybtan@126.com

Corresponding Author(s) : Yebang Tan*

Asian Journal of Chemistry, Vol. 26 No. 23 (2014)

Abstract

A series of thermo-sensitive copolymers of poly(N-isopropylacrylamide-co-sodium vinyl sulphonate) (PNIPAAm-co-SVS) were synthesized by radical copolymerization of N-isopropylacrylamide and sodium vinyl sulphonate in water using 2,2'-azobis (2-methylpropionamide) dihydrochloride (V-50) as the initiator. These copolymers exhibit different lower critical solution temperatures due to their distinct monomer ratios. The salt and pH-tuned phase separation behaviorus of the copolymers were studied by UV-visible spectrophotometry. The results show that the lower critical solution temperatures (LCST) of the copolymers decreased sharply with the increase of NaCl concentration or the decrease of pH value. Aggregation behaviour of the copolymers in aqueous solution as a function of copolymer composition, added salt and pH value were also studied by dynamic laser light scattering.

Keywords

Water souble copolymer Thermo-sensitive Lower critical solution temperature Aggregation behaviour.
Tan*, Y., Zhang, H., Liu, F., & Wang, M. (2014). Synthesis and Aggregation Behaviour of Thermo-Sensitive Copolymer of N-Isopropylacrylamide and Sodium Vinylsulphonate. Asian Journal of Chemistry, 26(23), 7943–7948. https://doi.org/10.14233/ajchem.2014.16774
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