HIDROLISA ENZYMATIK PADA SERAT SELULOSA
ABSTRACT: Sellulose material
such as cotton, linen, ramie and viscose rayon fabrics along with a cotton/linen blend
were hydrolyzed with
cellulase from trichoderma
viride. Surface fibrils were eliminated by 6 hour treatment
in all cases. The loss of fibrillar matter appeared to be the primary
cause of weight loss at this stage. On
prolonged treatment, cotton, lines, and viscose rayon lost weight at a
faster rate than ramie and the cotton/linen blend. The fall in yarn strength
was progressive with increasing weight loss for cotton and viscose, while for linen and
ramie it was slight initially
and then increased
sharply. Retention of
strength after 46 hours incubation time increased in the order
ramie<linen<cotton<viscose rayon. X ray crystallinity and moisture sorption
of the samples did not change
after the treatment, indicating that the mechanism of endwise attack of
the cellulose at accessible cellulose chain on crystallite surfaces appeared to apply to all four fibers. Changes in surface morphology could be
followed for all
enzyme-treated fibers by scanning
electron microscopy. Additionally mechanical
tests demonstrated the
changes in stretch
ability and stiffness
of the fabrics and the mobility of yarns within the samples.
Penulis: Indah Molektuz
Zuchairah
Kode Jurnal: jptindustridd050020
