Influence of pretreatment of cotton yarns prior to biopolishing

► A pretreatment on the accessibility of the yarn to the enzyme during biopolishing was studied. ► The pretreatment promotes enzymatic attack in situations where this is not favored. ► Pretreatment with water for 24h is important for inducing the enzymatic attack. ► After the biopolishing the yarns...

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Bibliographic Details
Published in:Carbohydrate polymers 2013-04, Vol.93 (2), p.412-415
Main Authors: Ulson de Souza, A.A., Ferreira, F.C.S., Guelli U. Souza, S.M.A.
Format: Article
Language:English
Subjects:
Applied sciences
Biopolishing
Cellulase
Cellulase - chemistry
Cellulose - chemistry
cotton
Cotton Fiber - methods
Cotton yarn
endo-1,4-beta-glucanase
Enzyme Assays
Exact sciences and technology
Fibers and threads
Forms of application and semi-finished materials
Gossypium - chemistry
Industrial Oils
Materials Testing - methods
Microfibrils - chemistry
Polymer industry, paints, wood
Pretreatment
shrinkage
Stress, Mechanical
Technology of polymers
Tensile Strength
textile industry
Water - chemistry
yarns
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Summary:► A pretreatment on the accessibility of the yarn to the enzyme during biopolishing was studied. ► The pretreatment promotes enzymatic attack in situations where this is not favored. ► Pretreatment with water for 24h is important for inducing the enzymatic attack. ► After the biopolishing the yarns showed less shrinkage. ► Pretreated before biopolishing promotes greater spacing between the chairs. Cellulase is one of the enzymes most commonly used in the textile industry for the biopolishing process. The appropriate choice of pretreatment is a possible route to promoting enzymatic attack in situations in which this is not favored due to the effects of packing. In order to evaluate the influence of pretreatment the yarn was maintained in water for 24h before biopolishing to promote greater spacing between the chains. In the tensile testing the pretreated Combed 13/1 yarn showed a greater percentage reduction in the maximum breaking force following biopolishing, evidencing a stronger enzymatic attack. Also, the Combed 13/1 and OE 14/1 yarns without pretreatment had an approximately 22% reduction in the shrinkage and after pretreatment the Carded 13/1 yarn had the best shrinkage reduction values (18%). These data demonstrate that the introduction of the pretreatment promotes a change in the access of the enzyme to the fiber.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2012.12.023