Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub

    Description

    In this study, cellulose nanocrystals (CNCs) are incorporated into a waterborne epoxy resin following two processing protocols that vary by order of addition. The processing protocols produce different levels of CNC dispersion in the resulting composites. The more homogeneously dispersed composite has a higher storage modulus and work of fracture at temperatures less than the glass transition temperature. Some properties related to the component interactions, such as thermal degradation and moisture content, are similar for both composite systems. The mechanism of dispersion is probed with electrophoretic measurements and electron microscopy, and based on these results, it is hypothesized that CNC preaddition facilitates the formation of a CNC-coated epoxy droplet, promoting CNC dispersion and giving the epoxide droplets added electrostatic stability. The implication of these structural changes in polymer network formation results in an extension of the epoxy and crosslinker mixture's pot life by three orders of magnitude.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Girouard, Natalie; Schueneman, Gregory T.; Shofner, Meisha L.; Meredith, J. Carson. 2015. Exploiting colloidal interfaces to increase dispersion, performance, and pot-life in cellulose nanocrystal/waterborne epoxy composites. Polymer. 68: 111-121.

    Cited

    Google Scholar

    Keywords

    Interfaces, Colloidal stability, Polymer nanocomposite, Cellulose

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/49169