Impact of pH Values on Viscosity of Sodium Alginate Solution and Hydrogen Bonds in the System
WANG Zongqian1,2, YANG Haiwei1
1 School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000 2 Technical Center of Textile Dyeing and Printing of Anhui Province, Wuhu 241000
Abstract: Aiming at analyzing the viscosity variation and the formation mechanism of sodium alginate (SA) solution under various pH values, the rheological curves of SA solution at various pH values were measured first. Furthermore, the characteristic absorption peaks of the hydroxyl groups in the FTIR spectra of each SA solution were fitted by Gaussian multi-peaks-fitting method. According to the fitting results, the types and the relative strength of hydrogen bonds in the SA solution system were calculated. Meanwhile, the effect of storage duration on the viscosity of SA solution with various pH values and the hydrogen bond strength in the system was also investigated. It could be found from the results that the shear thinning existed in SA solutions with different pH values, and the SA solution viscosity declined with the increase of pH value. In addition, the intermolecular and intramolecular hydrogen bonds were observed in the SA solution system. The relative strength of the intermolecular hydrogen bonds in SA solution dropped with the rising pH values. Meanwhile, the increase of negative charge on the surface of SA enlarged the electrostatic repulsion between SA molecules, resulting in a decrease of viscosity. After being refrigerated storage for 24h, the relative strength of intermolecular hydrogen bonds in SA solution with pH values of 5 and 9 increase by 4.22% and 20.13%, respectively, which contributed to the rise of the viscosity of SA solution. However, there was only a 0.29% increase in the relative strength of intermolecular hydrogen bonds in the SA solution system with a pH value of 7, accordingly, the viscosity of this solution remained almost invariant.
王宗乾, 杨海伟. pH值对海藻酸钠溶液黏度及体系中氢键的影响规律[J]. 材料导报, 2019, 33(8): 1289-1292.
WANG Zongqian, YANG Haiwei. Impact of pH Values on Viscosity of Sodium Alginate Solution and Hydrogen Bonds in the System. Materials Reports, 2019, 33(8): 1289-1292.
1 Boontheekul T, Kong H J, Mooney D J. Biomaterials, 2005, 26(15), 2455. 2 Chandika P, Ko S C, Oh G W, et al. International Journal of Biological Macromolecules, 2015, 81, 504. 3 Lin N, Huang J, Chang P R, et al. Colloids and Surfaces B:Biointerfa-ces, 2011, 85(2), 270. 4 He Y, Zhang N, Gong Q, et al. Carbohydrate Polymers, 2012, 88(3), 1100. 5 Liu L, Jiang L, Xu G, et al. Journal of Materials Chemistry B, 2014, 2(43), 7596. 6 Devi G K, Kumar P S, Kumar K S. Desalination & Water Treatment, 2016, 57, 27686. 7 Yang L, Guo J, Yu Y, et al. Carbohydrate Polymers, 2016, 142, 275. 8 Zhang Y, Liang H C, Liu H X, et al. Journal of Qingdao University (Natural Science Edition), 2013, 26(2), 57(in Chinese). 张杨, 梁洪超, 刘海祥,等. 青岛大学学报(自然科学版), 2013, 26(2), 57. 9 Min J, Wang L L. Journal of Textile Research, 2011, 32(6), 79(in Chinese). 闵洁, 王莉莉.纺织学报, 2011, 32(6), 79. 10 Wang Y L, Li Z H, Zhang L H. Food and Machinery, 2008, 24(1), 29(in Chinese). 王元兰, 李忠海, 张乐华.食品与机械, 2008, 24(1), 29. 11 Li S L, Guo J, Yang L J, et al. Acta Materiae Compositae Sinica,2016, 33(11), 2634(in Chinese). 李圣林, 郭静, 杨利军,等.复合材料学报, 2016, 33(11), 2634. 12 Wu J, Guo J, Yang L J, et al. Journal of Textile Research, 2017, 38(2), 7(in Chinese). 吴静, 郭静, 杨利军,等.纺织学报, 2017, 38(2), 7. 13 Lv H L, Ma Y W, Wan J Q, et al. Transactions of China Pulp and Paper, 2011, 26(1),1(in Chinese). 吕惠琳, 马邕文, 万金泉,等.中国造纸学报, 2011, 26(1), 1. 14 Wu J, Guo J, Zhang S, Gong Y M, et al. Chemical journal of Chinese Universities, 2017, 38(9), 1701(in Chinese). 吴静, 郭静, 张森,等.高等学校化学学报, 2017, 38(9), 1701. 15 Yang L J, Guo J, Zhang S, et al. Polymer Materials Science and Engineering, 2015, 31(10), 146(in Chinese). 杨利军, 郭静, 张森,等.高分子材料科学与工程, 2015, 31(10), 146. 16 Shen X Y, Wu X D, Li Y L, et al. Principles of polymer material proces-sing. 2nd ed, China Textile ＆ Apparel Press, China, 2009(in Chinese). 沈新元, 吴向东, 李燕立, 等. 高分子材料加工原理,第2版,中国纺织出版社, 2009. 17 Zhu S S, Wang B B, Tian X, et al. Acta Polymerica Sinica, 2015(5), 493(in Chinese). 朱顺生, 王兵兵, 田星,等.高分子学报, 2015(5), 493. 18 Li C W, Wang J G, Xie B J, et al. Spectroscopy and Spectral Analysis, 2014, 34(11), 2961.
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2019, Vol. 33 
