|
KMID : 1024520140230030473
|
|
Journal of the Environmental Sciences
2014 Volume.23 No. 3 p.473 ~ p.481
|
|
|
Studies of Degradation Behavior of Stereochemical Poly(lactide) Blend Fibers Prepared by Electrospinning
|
|
Jang Ei-Sup
Lee Won-Ki
|
|
|
Abstract
|
|
|
Poly(lactide)s(PLA) is an attractive material to solve the problem of waste plastic accumulation in nature because of its
biodegradability. The lactide exists in three stereoisomeric configurations: L-lactide, D-lactide, and meso-lactide. PLA
stereocomplexes, formed by the mixing of two enantiomers, poly(L-lactide)(PLLA) and poly(D-lactide)(PDLA), have many
favorable characteristics because the stereocomplex showed 50°C higher melting point than each enantiomeric polymer and the resistance toward degradation increased. In this study, we investigated the influence of the composition and the optical purity of each component on the formation of stereocomplexes. Also, the nanofibers of stereochemical PLA and their blends were prepared by electrospinning method. The properties of the obtained fibers were analyzed by differential scanning calorimetry and scanning electron microscopy. The results showed that a degree of stereocomplex was controlled by change of optical purity of each component. The enzymatic degradation of the fibers were strongly dependent on the stereocomplex.
|
|
|
KEYWORD
|
|
|
Poly(lactide), Stereocomplex, Electrospinning, Enzymatic degradation
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|