Coil-globule transition studies of sodium poly(styrene sulfonate) by dynamic light scattering

Ersin Serhatli, Müge Serhatli, Bahattin M. Baysal*, Frank E. Karasz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The coil-globule transition behavior of sodium poly(styrene sulfonate) (NaPSS) (MW = 1.2 × 106 g/mol) in 4.17 M aqueous NaCl solution has been studied by dynamic light scattering. The polymer dimensions show a smooth and continuous contraction below the reference temperature (18°C). The hydrodynamic radius (Rh) of NaPSS in this system was reduced from 13.1 nm (18°C) to 9.1 nm at 10°C. At the latter temperature the polymer segment volume fraction was calculated to be 0.58. The contraction for this and other NaPSS samples investigated in this study is somewhat limited because under these high ionic strength conditions the polymer chains already contracted as a result of the screening effect of the ions.

Original languageEnglish
Pages (from-to)5439-5445
Number of pages7
Issue number20
Publication statusPublished - 12 Aug 2002


This work was supported by TUBITAK Marmara Research Center and the National Science Foundation (NSF Grant INT-9507751). F.E.K. and B.M.B. acknowledge support from AFOSR Grant 99-001, and TUBA-Turkish Academy of Sciences, respectively.

FundersFunder number
TUBA-Turkish Academy of Sciences
TUBITAK Marmara Research Center
National Science FoundationINT-9507751
Air Force Office of Scientific Research


    • Coil-globule transition
    • Dynamic light scattering
    • Sodium poly(styrene sulfonate)


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