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Polymer diffusion in high-M/low-M hard-soft latex blends

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Abstract

This paper describes experiments that investigate the use of low glass transition temperature (T g) latex particles consisting of oligomer to promote polymer diffusion in films formed from high molar mass polymer latex. The chemical composition of both polymers was similar. Fluorescence resonance energy transfer (FRET) was used to follow the rate of polymer diffusion for samples in which the high molar mass polymer was labeled with appropriate donor and acceptor dyes. In these latex blends, the presence of the oligomer (with M n = 24,000 g/mol, M w/M n = 2) was so effective at promoting the interdiffusion of the higher molar mass poly(butyl acrylate-co-methyl methacrylate; PBA/MMA = 1:1 by weight) polymer (with M n = 43,00 g/mol, M w/M n = 3) that a significant amount of interdiffusion occurred during film drying. Additional polymer diffusion occurred during film aging and annealing, and this effect could be described quantitatively in terms of free-volume theory.

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Acknowledgments

The authors thank Rohm and Haas, Rohm and Haas Canada, and NSERC Canada for their support of this research.

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Author notes

  1. J. Pablo Tomba & Walter F. Schroeder

    Present address: Institute of Materials Science and Technology (INTEMA), National Research Council (CONICET), University of Mar del Plata, Juan B. Justo 4302, 7600, Mar del Plata, Argentina

Authors and Affiliations

  1. Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada, M5S 3H6

    J. Pablo Tomba, Daniel Portinha, Walter F. Schroeder & Mitchell A. Winnik

  2. Rohm and Haas Company, 727 Norristown Road, P.O. Box 904, Spring House, PA, 19477-0904, US

    Willie Lau

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  1. J. Pablo Tomba
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  2. Daniel Portinha
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  3. Walter F. Schroeder
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  4. Mitchell A. Winnik
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  5. Willie Lau
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Corresponding authors

Correspondence to Mitchell A. Winnik or Willie Lau.

Additional information

This paper is dedicated to Professor Haruma Kawaguchi to honor his many contributions to the field of latex particles and their applications.

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Tomba, J.P., Portinha, D., Schroeder, W.F. et al. Polymer diffusion in high-M/low-M hard-soft latex blends. Colloid Polym Sci 287, 367–378 (2009). https://doi.org/10.1007/s00396-009-1996-1

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  • DOI: https://doi.org/10.1007/s00396-009-1996-1

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