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Manipulating poly(lactic acid) surface morphology by solvent-induced crystallization

Authors
Journal
Applied Surface Science
0169-4332
Publisher
Elsevier
Publication Date
Volume
261
Identifiers
DOI: 10.1016/j.apsusc.2012.08.050
Keywords
  • Poly(Lactic Acid)
  • Solvent-Induced Crystallization
  • Morphology
  • Surface Structure

Abstract

Abstract Here, we report some unique crystalline morphologies of poly(lactic acid) (PLA) via organic solvent-induced crystallization. It was revealed that the surface morphology of PLA can be fine tuned by simply varying the volume ratio of a mixed solvent (acetone/ethanol). By increasing the ethanol content in the mixed solvent, we observed a morphological evolution of PLA surface from spherulite to shish–kebab and bamboo-cage-like structure. It was also interesting to find that the initial surface structure of PLA plays an important role to determine the final solvent-induced crystalline morphology. This work provides a new method for manipulating PLA crystal morphology through a simple solvent-induced crystallization.

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