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

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

Film formation from a latex involves interdiffusion of polymer chains. The interdiffusion behavior of polystyrene with H ends, one sulfonate end, and two sulfonate ends are compared via small-angle neutron scattering (SANS) and a direct nonradiative energy transfer technique (DET) at short times. Hi...

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Veröffentlicht in:Macromolecules 2000-10, Vol.33 (22), p.8334-8343
Hauptverfasser: Kim, S. D, Klein, A, Sperling, L. H, Boczar, E. M, Bauer, B. J
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Sprache:eng
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Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Surface properties
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container_end_page 8343
container_issue 22
container_start_page 8334
container_title Macromolecules
container_volume 33
creator Kim, S. D
Klein, A
Sperling, L. H
Boczar, E. M
Bauer, B. J
description Film formation from a latex involves interdiffusion of polymer chains. The interdiffusion behavior of polystyrene with H ends, one sulfonate end, and two sulfonate ends are compared via small-angle neutron scattering (SANS) and a direct nonradiative energy transfer technique (DET) at short times. High molecular weight (M n ≅ 300 000) 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 °C. The diffusion coefficients of polystyrene with H ends were five times and 10 times higher than that of polystyrene with one sulfonate end and two sulfonate ends, respectively. The probable cause is end-to-end aggregation of the chains, supported by the ratio R g/M 1/2 remaining substantially constant.
doi_str_mv 10.1021/ma000432u
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subjects Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Surface properties
title SANS Study of Sulfonate End Group Effect on Polystyrene Self-Diffusion
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