Crystallization of amorphous poly(lactic acid) induced by organic solvents

Naofumi Naga; Yuji Yoshida; Masaya Inui; Keiichi Noguchi; Shigemitsu Murase

doi:10.1002/app.32890

Crystallization of amorphous poly(lactic acid) induced by organic solvents

Naofumi Naga, Yuji Yoshida, Masaya Inui, Keiichi Noguchi, Shigemitsu Murase

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Crystallization of amorphous poly(lactic acid) (PLA) was investigated in various organic solvents, such as acetone, ethylacetate, diethylether, tetrahydrofurane, methanol, hexane, toluene, xylene, and o-dichlorobenene. Most of the solvents, except hexane, induced crystallization of amorphous PLA. Acetone was the most effective solvent to accelerate the crystallization among the solvents used. The crystallization was induced by permeation of acetone into the amorphous phase of PLA, and the permeation obeyed Fick type diffusion. The crystallization rate increased with increasing of conducting temperature. Crystallized PLA formed α crystalline structure. The permeated acetone in the crystallized PLA gradually evaporated as time passes, and the elimination of acetone affected thermal and mechanical properties of the crystallized PLA.

Original language	English
Pages (from-to)	2058-2064
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	119
Issue number	4
DOIs	https://doi.org/10.1002/app.32890
Publication status	Published - 2011 Feb 15

Keywords

acetone
crystallization
organic solvent
poly(lactic acid)

ASJC Scopus subject areas

Chemistry(all)
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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title = "Crystallization of amorphous poly(lactic acid) induced by organic solvents",

abstract = "Crystallization of amorphous poly(lactic acid) (PLA) was investigated in various organic solvents, such as acetone, ethylacetate, diethylether, tetrahydrofurane, methanol, hexane, toluene, xylene, and o-dichlorobenene. Most of the solvents, except hexane, induced crystallization of amorphous PLA. Acetone was the most effective solvent to accelerate the crystallization among the solvents used. The crystallization was induced by permeation of acetone into the amorphous phase of PLA, and the permeation obeyed Fick type diffusion. The crystallization rate increased with increasing of conducting temperature. Crystallized PLA formed α crystalline structure. The permeated acetone in the crystallized PLA gradually evaporated as time passes, and the elimination of acetone affected thermal and mechanical properties of the crystallized PLA.",

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T1 - Crystallization of amorphous poly(lactic acid) induced by organic solvents

AU - Naga, Naofumi

AU - Yoshida, Yuji

AU - Inui, Masaya

AU - Noguchi, Keiichi

AU - Murase, Shigemitsu

PY - 2011/2/15

Y1 - 2011/2/15

N2 - Crystallization of amorphous poly(lactic acid) (PLA) was investigated in various organic solvents, such as acetone, ethylacetate, diethylether, tetrahydrofurane, methanol, hexane, toluene, xylene, and o-dichlorobenene. Most of the solvents, except hexane, induced crystallization of amorphous PLA. Acetone was the most effective solvent to accelerate the crystallization among the solvents used. The crystallization was induced by permeation of acetone into the amorphous phase of PLA, and the permeation obeyed Fick type diffusion. The crystallization rate increased with increasing of conducting temperature. Crystallized PLA formed α crystalline structure. The permeated acetone in the crystallized PLA gradually evaporated as time passes, and the elimination of acetone affected thermal and mechanical properties of the crystallized PLA.

AB - Crystallization of amorphous poly(lactic acid) (PLA) was investigated in various organic solvents, such as acetone, ethylacetate, diethylether, tetrahydrofurane, methanol, hexane, toluene, xylene, and o-dichlorobenene. Most of the solvents, except hexane, induced crystallization of amorphous PLA. Acetone was the most effective solvent to accelerate the crystallization among the solvents used. The crystallization was induced by permeation of acetone into the amorphous phase of PLA, and the permeation obeyed Fick type diffusion. The crystallization rate increased with increasing of conducting temperature. Crystallized PLA formed α crystalline structure. The permeated acetone in the crystallized PLA gradually evaporated as time passes, and the elimination of acetone affected thermal and mechanical properties of the crystallized PLA.

KW - acetone

KW - crystallization

KW - organic solvent

KW - poly(lactic acid)

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Crystallization of amorphous poly(lactic acid) induced by organic solvents

Abstract

Keywords

ASJC Scopus subject areas

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