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- Title
Flexibility improvement of poly(lactic acid) by stearate-modified layered double hydroxide.
- Authors
Eili Mahboobeh; Wan Md Zin Wan Yunus; Zobir Hussein; Mansor Ahmad; Nor Azowa Ibrahim
- Abstract
Polylactic acidlayered double hydroxide PLALDH nanocomposites were prepared from PLA and stearateMg3Al LDH via a solution casting method. The anionic clay Mg3Al LDH was prepared first by coprecipitation method from nitrate salts solution at pH 9 and then modified by stearate anions through an ion exchange reaction. This modification increased the basal spacing of the synthetic clay from 8.72 to 31.68 Å. The presence of stearate ions in the synthesized Mg3Al LDH was shown by the stearateMg3Al LDH infrared spectrum. When the stearateMg3Al LDH at the low concentration was dispersed in the PLA matrix, its layers were largely delaminated. The presence of 1.0 wt of the stearateMg3Al LDH in the PLA improved drastically of around 650 of its elongation at break but retained its tensile strength and modulus as compared to those of the pure PLA. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
- Subjects
LACTIC acid; HYDROXIDES; NANOCOMPOSITE materials; STEARATES; ION exchange (Chemistry)
- Publication
Journal of Applied Polymer Science, 2010, Vol 118, Issue 2, p1077
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.32461