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

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

研究成果: Article査読

31 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)2058-2064
ページ数7
ジャーナルJournal of Applied Polymer Science
119
4
DOI
出版ステータスPublished - 2011 2 15

ASJC Scopus subject areas

  • 化学 (全般)
  • 表面、皮膜および薄膜
  • ポリマーおよびプラスチック
  • 材料化学

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