Yang Maiping, Xu Helan, Hou Xiuliang, Zhang Jie, Yang Yiqi
Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
Department of Textiles, Merchandising and Fashion Design, 234, HECO Building, University of Nebraska-Lincoln, Lincoln, NE 68583-0802, United States.
J Environ Manage. 2017 Mar 1;188:26-31. doi: 10.1016/j.jenvman.2016.11.066. Epub 2016 Dec 3.
Fully biodegradable textile sizes with satisfactory performance properties were developed from soy protein with controlled hydrolysis and dis-entanglement to tackle the intractable environmental issues associated with the non-biodegradable polyvinyl alcohol (PVA) in textile effluents. PVA derived from petroleum is the primary sizing agent due to its excellent sizing performance on polyester-containing yarns, especially in increasingly prevailing high-speed weaving. However, due to the poor biodegradability, PVA causes serious environmental pollution, and thus, should be substituted with more environmentally friendly polymers. Soy protein treated with high amount of triethanolamine was found with acceptable sizing properties. However, triethanolamine is also non-biodegradable and originated from petroleum, therefore, is not an ideal additive. In this research, soy sizes were developed from soy protein treated with glycerol, the biodegradable triol that could also be obtained from soy. The soy sizes had good film properties, adhesion to polyester and abrasion resistance close to PVA, rendering them qualified for sizing applications. Regarding desizing, consumption of water and energy for removal of soy size could be remarkably decreased, comparing to removal of PVA. Moreover, with satisfactory degradability, the wastewater containing soy sizes was readily dischargeable after treated in activated sludge for two days. In summary, the fully biodegradable soy sizes had potential to substitute PVA for sustainable textile processing.
通过对大豆蛋白进行可控水解和解缠，开发出了具有令人满意性能的完全可生物降解纺织浆料，以解决与纺织废水中不可生物降解的聚乙烯醇（PVA）相关的棘手环境问题。源自石油的PVA由于其对含聚酯纱线具有优异的上浆性能，尤其是在日益流行的高速织造中，是主要的上浆剂。然而，由于生物降解性差，PVA会造成严重的环境污染，因此，应该用更环保的聚合物替代。发现用大量三乙醇胺处理的大豆蛋白具有可接受的上浆性能。然而，三乙醇胺也是不可生物降解的，且源自石油，因此，不是理想的添加剂。在本研究中，大豆浆料是由用甘油处理的大豆蛋白制成的，甘油是一种也可从大豆中获得的可生物降解三元醇。大豆浆料具有良好的成膜性能、对聚酯的粘附性和接近PVA的耐磨性，使其有资格用于上浆应用。关于退浆，与去除PVA相比，去除大豆浆料的水和能源消耗可显著降低。此外，由于具有令人满意的降解性，含大豆浆料的废水在活性污泥中处理两天后即可排放。总之，完全可生物降解的大豆浆料有潜力替代PVA用于可持续的纺织加工。
