Cited by 115Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesClay minerals and soil interactions

(Plasticized) polylactide/(organo-)clay nanocomposites by in situ intercalative polymerization

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Paul, Marie‐Amélie, Delcourt, Cécile, Alexandre, Michaël, Degée, Philippe, Monteverde, Fabien, Rulmont, André, Dubois, Philippe·2005·Macromolecular Chemistry and Physics

Abstract

Summary: Both intercalated and exfoliated poly(L,L‐lactide) (P(L,L‐LA)/organomodified montmorillonite nanocomposites were synthesized by in situ ring‐opening polymerization of L,L‐lactide, in bulk, directly in the presence of the nanofiller. Intercalation of polyester chains was found to appear even for natural unmodified montmorillonite‐Na+, while exfoliation occurred when the aluminosilicate layers were modified by ammonium cations bearing primary hydroxyl groups. Clay delamination was effectively triggered by the grafting reaction of the growing PLA chains onto the hydroxyl groups. Aluminium triisopropoxide, triethylaluminium, and stannous octoate, as initiating or co‐initiating species, were compared in terms of polymerization control. The influence of nanoclay content (from 1 to 10 wt.‐% in inorganics) on morphology and thermal behavior was also studied. In parallel, a highly filled nanocomposite (called masterbatch), prepared by in situ polymerization, was dispersed into a (plasticized) preformed polylactide matrix in the molten state, to reach a better clay delamination than that obtained by direct melt blending. Finally, L,L‐lactide and α,ω‐dihydroxylated poly(ethylene glycol) (PEG 1000) were copolymerized in presence of clay in order to study the behavior of the resulting triblocks towards nanocomposite formation. Significant exfoliation of clay platelets has been achieved in a commercial polylactide matrix using a “masterbatch” process (white arrows). magnified imageSignificant exfoliation of clay platelets has been achieved in a commercial polylactide matrix using a “masterbatch” process (white arrows).

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Crossref · 10.1002/macp.200400324

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  • Adding plasticizers such as low-molecular-weight citric acid, succinic acid, tartaric acid, and oxalate to PLA changes its mechanical and thermodynamic properties.

    “Some plasticizers, such as low-molecular-weight citric acid, succinic acid, tartaric acid, and oxalate, are blended with PLA to change its mechanical and thermodynamic properties.”

    From Synthesis and Biological Application of Polylactic Acid (2020) · cites this paper as [67]

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Cited by

Sorted by citations

Authors
Paul, M., Delcourt, C., Alexandre, M., Degée, P., Monteverde, F., Rulmont, A., & Dubois, P.
Affiliations
University of Mons (BE)
Venue
Macromolecular Chemistry and Physics
Publisher
Wiley
Published
2005-02-10
Volume
206
Issue
4
Pages
484-498
ISSN
  • 1022-1352 (ISSN-L)
  • 1521-3935
OpenAlex
W1988586032
Cited by
115
References
32
Citations by year
2025: 4 · 2024: 1 · 2023: 3 · 2022: 5 · 2021: 4 · 2020: 6 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 5 · 2015: 10 · 2014: 4 · 2013: 16 · 2012: 11
FWCI
4.34
Type
journal article
Language
en
Open access
Locations
  • Macromolecular Chemistry and Physics (publishedVersion)
  • ORBi UMONS (submittedVersion, other-oa)
  • ORBi (University of Liège) (submittedVersion)
Funders
  • Australian Government
  • Office of Science
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer Nanocomposites and Properties
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Materials Science › Biomaterials › Clay minerals and soil interactions
Keywords
polylactic acid, organoclay, montmorillonite, polymer-clay nanocomposites, in situ intercalative polymerization, ring-opening polymerization, clay exfoliation, clay intercalation, triethylaluminum, stannous octoate, polymerization control, masterbatch, triblock copolymers, thermal effects, morphology (materials science)

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