Effect of Lipase Treatment on Physical and Dyeing Properties of Cellulose Acetate Fabric
Objective: Cellulose acetate fabric was bio-treated by lipase enzyme. Afterwards,
untreated and bio-treated fabrics were dyed with direct and disperse dyes in conventional
Methods: Enzymatic deacetylation of cellulose acetate fibers led to an improvement in hydrophilicity.
The whiteness index of cellulose acetate fabric slightly decreased from 95.81 to
95.79 after bio-pretreatment.
Results: Lipase pre-treatment also caused an increase in fiber diameter of up to 54.80%.
Bending length decreased from 1.95 to 1.80 cm after enzymatic treatment while the number
of threads per centimeter and fabric thickness increased. Bio-treated fabric showed lower
tensile strength in comparison to untreated fabric almost 52.48%. Change in the morphology
of fibers was observed by SEM after enzymatic deacetylation. Bio-treated fabric showed an
increase in color strength in comparison to the untreated fabric.
Conclusion: The lipase pretreatment increased the color strength by 19.04 % and 18.50 %
for direct and disperse dyes respectively.
Journal Title: Recent Innovations in Chemical Engineering