Structure–barrier property relationship of biodegradable poly(butylene succinate) and poly[(butylene succinate)-co-(butylene adipate)] nanocomposites: influence of the rigid amorphous fraction

Charlon, C.;Marais, S.;Dargent, E;Soulestin, J.;Follain, N;et.al.
(2015) Physical Chemistry Chemical Physics — Vol. 44, n° 17, p. 29918-29934 (2015)

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Authors
  • Charlon, C.Université de Rouen, France
    Author
  • Marais, S.Université de Rouen, France
    Author
  • Dargent, ENormandie University
    Author
  • Soulestin, J.Ecole des Mines, Douai, France
    Author
  • Sclavons, MichelUCLouvain
    Author
  • Follain, NUniversité de Rouen - Normandie University - France
    Author
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Abstract
Composites composed of polyesters, poly(butylene succinate) (PBS) or poly[(butylene succinate)-co- (butylene adipate)] (PBSA), and 5 wt% of montmorillonite (CNa) or organo-modified montmorillonite (C30B) were melt-processed and transformed into films by either compression-molding or extrusioncalendering. XRD, rheological measurements and TEM images clearly indicated that films containing CNa are microcomposites, while nanocomposites were observed for those containing C30B. Using Flash DSC, it was possible, for the first time, not only to measure the heat capacity step at the glass transition of these two materials in their amorphous state, but also to investigate whether the preparation technique influenced the Rigid Amorphous Fraction (RAF) in our PBS- and PBSA-based nanocomposites. In this work, we have successfully shown the correlation between the microstructure of the films and their barrier properties, and especially the role played by the RAF. Indeed, the lowest permeabilities to gases and to water were determined in the films containing the highest RAF in both PBS- and PBSA-based materials
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Charlon, C., Marais, S., Dargent, E., Soulestin, J., Sclavons, M., & Follain, N. (2015). Structure–barrier property relationship of biodegradable poly(butylene succinate) and poly[(butylene succinate)-co-(butylene adipate)] nanocomposites: influence of the rigid amorphous fraction. Physical Chemistry Chemical Physics, 44(17), 29918-29934. https://doi.org/10.1039/c5cp04969e (Original work published 2015)