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SANS Study of Sulfonate End Group Effect on Polystyrene Self-Diffusion



S D. Kim, A Klein, L H. Sperling, E M. Boczar, Barry J. Bauer


Film formation from a latex involves interdiffusion of the polymer chains. The interdiffusion behavior of polystyrene with H-ends, one sulfite-end, and two sulfite-ends are compared via small-angle neutron scattering (SANS) and a direct nonradiative energy transfer technique (DET) at short times. High molecular weight (Mn ? 300,000 g/mol) anionically synthesized polystyrenes were confined in latex particles utilizing an artificial miniemulsification technique. Interdiffusion of the polystyrenes in a latex film was carried out at temperatures of 125 - 145 oC. The diffusion coefficients of polystyrene with H-ends were five times and ten times higher than that of polystyrene with one sulfite-end and two-sulfite ends, respectively. The probable cause is end-to-end aggregation of the chains, supported by the ratio of Rg/M1/2 remaining substantially constant. The probable cause was end-to-end aggregation of the chains.
No. 22


dierec energy transfer, diffusion, film formation, polystyrene, SANS, sulfite end groups


Kim, S. , Klein, A. , Sperling, L. , Boczar, E. and Bauer, B. (2000), SANS Study of Sulfonate End Group Effect on Polystyrene Self-Diffusion, Macromolecules, [online], (Accessed June 19, 2024)


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Created September 30, 2000, Updated October 12, 2021