TY - JOUR
T1 - Modified soy protein to substitute non-degradable petrochemicals for slashing industry
AU - Zhao, Yuzhu
AU - Zhao, Yi
AU - Yang, Yiqi
N1 - Funding Information:
This research was financially supported by Chinese National High Technology Research and Development Program 863 Project ( 2013AA06A307 ), National Institute of Food and Agriculture ( Multi-State Project S1054 (NEB 37-037) ), United Soybean Board Domestic Programs ( 1440-512-5296 ), USDA Hatch Act, and the Agricultural Research Division at the University of Nebraska Lincoln . Yi is grateful to China Scholarship Council and John and Louise Skala Fellowship for their financial support. We also thank Luthai Textile Co., LTD. for their help in the industrial-scale weaving trial, and thank ADM for their help.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - Additives with multiple hydroxyl groups, nonlinear molecular structure and electric charge, like triethanolamine (TEA), could modify soy protein into effective sizes for high speed weaving of cotton fabrics. Poly(vinyl alcohol) (PVA) sizes are known as the best sizing agent for cotton. However, PVA is poorly biodegradable and is a major contributor to high chemical oxygen demand in textile effluents. Starch sizes have escalating prices and also could not provide cotton yarns with enough protection in high speed weaving or weaving of high-count cotton fabrics as PVA does. Soy protein, extracted from bio-diesel or edible oil byproducts such as soymeal, is highly available, low cost, water soluble, biodegradable, and has limited industrial applications. The major disadvantage of using soy protein as warp sizes is their formation of films with low flexibility, leading to poor size performance and weaving efficiency. In this paper, adding triethanolamine (TEA) substantially improves tensile properties of soy protein films. Industrial weaving results showed TEA-soy protein (TEA-soy) had 36% and 12% higher weaving efficiency for cotton fabrics than modified starch and PVA sizes. In addition, TEA-soy sizes had a 5-day biochemical oxygen demand/chemical oxygen demand ratio of 0.44 compared to 0.03 for PVA indicating that TEA-soy sizes were easily biodegradable in activated sludge. To replace starch and PVA sizes, about 1.2 million tons of soymeal could be used to produce TEA-soy for high quality and high speed weaving, benefiting agriculture, textiles, and environment.
AB - Additives with multiple hydroxyl groups, nonlinear molecular structure and electric charge, like triethanolamine (TEA), could modify soy protein into effective sizes for high speed weaving of cotton fabrics. Poly(vinyl alcohol) (PVA) sizes are known as the best sizing agent for cotton. However, PVA is poorly biodegradable and is a major contributor to high chemical oxygen demand in textile effluents. Starch sizes have escalating prices and also could not provide cotton yarns with enough protection in high speed weaving or weaving of high-count cotton fabrics as PVA does. Soy protein, extracted from bio-diesel or edible oil byproducts such as soymeal, is highly available, low cost, water soluble, biodegradable, and has limited industrial applications. The major disadvantage of using soy protein as warp sizes is their formation of films with low flexibility, leading to poor size performance and weaving efficiency. In this paper, adding triethanolamine (TEA) substantially improves tensile properties of soy protein films. Industrial weaving results showed TEA-soy protein (TEA-soy) had 36% and 12% higher weaving efficiency for cotton fabrics than modified starch and PVA sizes. In addition, TEA-soy sizes had a 5-day biochemical oxygen demand/chemical oxygen demand ratio of 0.44 compared to 0.03 for PVA indicating that TEA-soy sizes were easily biodegradable in activated sludge. To replace starch and PVA sizes, about 1.2 million tons of soymeal could be used to produce TEA-soy for high quality and high speed weaving, benefiting agriculture, textiles, and environment.
KW - Biodegradable size
KW - Modified starch
KW - Poly(vinyl alcohol)
KW - Slashing
KW - Soy protein
KW - Triethanolmaine
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U2 - 10.1016/j.indcrop.2015.01.058
DO - 10.1016/j.indcrop.2015.01.058
M3 - Article
AN - SCOPUS:84922744012
VL - 67
SP - 466
EP - 474
JO - Industrial Crops and Products
JF - Industrial Crops and Products
SN - 0926-6690
ER -