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

Download Paper

Local Download

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 October 10, 2024)