Novel bio-antifelting agent based on waterborne polyurethane and cellulose nanocrystals

► A novel cellulose nanocomposites is proposed for antifelting finish. ► The nanocrystal films were applied onto surfaces of wools by a pad-dry-cure process. ► Adding 1% cellulose nanocrystals can decrease 44% use of antifelting agent. ► Cellulose nanocrystals can react with the groups of wool. ► Th...

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Bibliographic Details
Published in:Carbohydrate polymers 2013-01, Vol.91 (1), p.169-174
Main Authors: Zhao, Qun, Sun, Gang, Yan, Kelu, Zhou, Aojia, Chen, Yixiu
Format: Article
Language:English
Subjects:
acid hydrolysis
Animals
Antifelting treatment
cellulose
Cellulose - chemistry
Cellulose nanocrystals
Mechanical Phenomena
Nanocomposites
nanocrystals
Nanoparticles - chemistry
Polyurethane
polyurethanes
Polyurethanes - chemistry
scanning electron microscopy
tensile strength
transmission electron microscopy
Water - chemistry
Wool
woolen fabric
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Summary:► A novel cellulose nanocomposites is proposed for antifelting finish. ► The nanocrystal films were applied onto surfaces of wools by a pad-dry-cure process. ► Adding 1% cellulose nanocrystals can decrease 44% use of antifelting agent. ► Cellulose nanocrystals can react with the groups of wool. ► The tensile strength of the fabric was increased by 14.95%. Novel nanocomposites made from cellulose nanocrystals and waterborne polyurethane were employed as wool antifelting agents. The cellulose nanocrystals, prepared by acid hydrolysis of cellulose microcrystalline, are in rod form with lengths of 70–150nm and diameters of 10–20nm in aqueous suspension, respectively. After the two aqueous suspensions were mixed homogeneously, cellulose nanocrystal reinforced polyurethane composite (nanocomposite) films were prepared and evaluated by means of transmission electron microscopy, scanning electron microscopy and dynamic mechanical analysis. Then the nanocrystal films were applied onto surfaces of wools by a pad-dry-cure process with nanocomposites containing different cellulose nanocrystal contents. The results indicated that with increasing cellulose nanocrystal content from 0 to 1.0wt%, the area-shrinking rate of the treated wool fabrics was decreased from 5.24% to 0.70%, and the tensile strength of the fabric was increased by 14.95% and decreased about 44% use of waterborne polyurethane.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2012.08.020