||I U P A C
Organizations & People
Pure Appl. Chem.,
Vol. 71, No. 11, pp. 2177-2188, 1999
COMMISSION ON POLYMER CHARACTERIZATION AND PROPERTIES
Studies on Biodegradable Poly(Hexano-6-Lactone)
Fibers- 2. Environmental Degradation
T. Hayashi, K. Nakayama,
and T. Masuda
Abstract: Poly(hexano-6-lactone) (PCL*) fibers were degraded
under environmental conditions, including soil burial, sea water exposure,
and activated sludge exposure. The extent of degradation was examined
by weight loss, mechanical properties loss such as tensile strength
and ultimate elongation decreases, and visual observations by scanning
electron microscopy. The rate of degradation was found to depend on
draw ratio and crystallinity of the PCL fibers with surface erosion
of amorphous regions more readily than crystalline regions. The life
time of highly-drawn PCL fibers when exposed to soil burial and seawater
was evaluated from the view point of environmental applications. In
terms of degradation mechanism of PCL fiber breakdown biodegradation
seems to be the dominant reaction, that is hydrolysis reaction catalyzed
by enzyme secreted by microorganisms.
> View corresponding
> Download full
text - pdf 476K
Page last modified 23 August 2000.
Copyright © 2000 International Union of Pure and Applied Chemistry.
Questions or comments about IUPAC, please contact, the Secretariat.
Questions regarding the website, please contact Web