Advantages of a two-step enzymatic process for cotton-polyester blends.
Cotton fabric samples were treated with a formulation of a total crude Trichoderma reesei cellulase in a two-step procedure. In the first step, samples were treated at a low liquor ratio by padding through the enzyme formulation at 21 degrees C and 55 degrees C with a wet pickup of 100% and batched for 12 h. The samples were then treated at a high liquor ratio (1:25) with an identical enzyme formulation at 55 degrees C, with intensive agitation. The pre-treatment influenced the overall weight loss and rate of hydrolysis in samples, and the protein concentration in the liquor of the second step. The overall weight loss was 25-28% (w/w) in the two-step procedure compared to a weight loss of 22% (w/w) in the one-step batch hydrolysis.
Schimper
Christian B
CB
Christian-Doppler-Laboratory, Textile and Fibre Chemistry of Cellulosics, Institute of Textile Chemistry and Textile Physics, Leopold-Franzens University Innsbruck, Dornbirn, Austria.
Ibanescu
Constanta
C
Keckeis
Rupert
R
Bechtold
Thomas
T
D002480:Cellulase / Q000378:metabolism*; D032561:Cotton Fiber; D006868:Hydrolysis; D011091:Polyesters; D013783:Textile Industry / Q000379:methods*; D013784:Textiles; D014242:Trichoderma / Q000201:enzymology* / Q000378:metabolism
D011091:Polyesters; D002480:Cellulase