New polylactide/layered silicate nanocomposites. 1. Preparation, characterization, and properties
Abstract
New polylactide (PLA)/layered silicate nanocomposites have been prepared successfully by simple melt extrusion of PLA and organically modified montmorillonite. The d spacings of both the organically modified montmorillonite and intercalated nanocomposites were investigated by wide-angle X-ray diffraction (WAXD) analysis, and the morphology of these nanocomposites was examined by transmission electron microscopy (TEM). Using oligo(ε-caprolactone) (o-PCL) as a compatibilizer, the effect of compatibilizer in nanocomposites was investigated by focusing on two major aspects: morphological analysis and mechanical property measurements. The intercalated nanocomposites exhibited remarkable improvement of materials properties in both solid and melt states as compared to that of PLA matrices without clay.
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The condensation-polymerization method cannot directly synthesize polymer PLA and requires coupling agents and esterification accelerators.
“Although the cost of the condensation-polymerization method is low, it cannot directly synthesize polymer PLA. Rather, part of the cost corresponds to the coupling agent and esterification accelerator used in the synthesis process.”
From Synthesis and Biological Application of Polylactic Acid (2020) · cites this paper as [39]
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- Authors
- Sinha Ray, S., Maiti, P., Okamoto, M., Yamada, K., & Ueda, K.
- Affiliations
- Advanced Polymeric Materials Engineering, Graduate School of Engineering, Toyota Technological Institute, Hisakata 2-12-1, Tempaku, Nagoya 468-8511, Japan, and Unitika Ltd., Kozakura 23, Uji, Kyoto 611-0021, Japan
- Unitika (Japan) (JP)
- Corresponding author
- Okamoto, Masami
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-03-09
- Volume
- 35
- Issue
- 8
- Pages
- 3104-3110
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2113086259
- Cited by
- 607
- References
- 28
- Citations by year
- 2026: 2 · 2025: 8 · 2024: 6 · 2023: 10 · 2022: 6 · 2021: 12 · 2020: 10 · 2019: 21 · 2018: 20 · 2017: 25 · 2016: 23 · 2015: 38 · 2014: 41 · 2013: 46 · 2012: 51
- FWCI
- 24.94
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Macromolecules (publishedVersion)
- 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, layered silicate nanocomposites, organically modified montmorillonite, melt extrusion, compatibilizer, intercalation, nanocomposite morphology, mechanical properties, biodegradable polymers
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