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

Published

October 1, 2000

Author(s)

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

Abstract

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.

Citation

Macromolecules

Volume

33

Issue

No. 22

Pub Type

Journals

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Keywords

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

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851738 (Accessed April 25, 2024)