TITLE:
Effects Optimization of Bio-Polishing Industrial Process Parameters
AUTHORS:
Imed Ben Marzoug, Rim Cheriaa
KEYWORDS:
Bio-Polishing, Cellulase, Tensile Strength, Optimization, Fabric Hand Feel
JOURNAL NAME:
Journal of Textile Science and Technology,
Vol.9 No.1,
February
20,
2023
ABSTRACT: The purpose of this study is to select an appropriate commercial neutral
cellulase enzyme for denim garments bio-polishing to achieve specific industrial
goals. A full factorial experimental design was used to evaluate the effect of
factors considered in the optimization of the bio-polishing process (fabric ID:
x1, treatment time: x2, treatment temperature: x3, enzyme concentration: x4,
storage time: x5, inactivation step: x6 and enzyme type: x7). Experiments were
conducted using laboratory washing machine. Subjective evaluation was performed
at a pilot and at an industrial scale. Tear, tensile strength and subjective
evaluation concerning hand feel, fabric color, indigo dye pocket back staining
and fuzziness extent were evaluated. Results showed that x6 and x7 had
significant effects on the fabric tear and tensile strength loss. In the
optimization, the great dependence between observed and predicted tear strength
and tensile strength loss, the correlation coefficient of the models (R2 > 0.85)
and the important value of F-ratio proved the validity of the models. Results
showed that denim leg panels treated with the enzyme Lava-Cell NSZ presented a
minimum loss of tear and tensile strength. A low-temperature and time enzymatic
bio-polishing process was developed at industrial scale.