Effect of D-sorbitol on Rheology of Aqueous Alumina Suspensions with Poly(Acrylic Acid)

doi:10.3724/SP.J.1077.2011.00545

Abstract

Abstract: Effect of D-sorbitol addition on rheological properties of aqueous alumina suspensions dispersed with poly (acrylic acid) (PAA) was investigated. The results showed that for the aqueous alumina suspensions with 30vol%?40vol% solids loadings, small amount of D-sorbitol can significantly enhance the stability of alumina suspensions with PAA at pH=9.0. When the total amount of dispersant was 0.5wt% and the concentration of D-sorbitol was 20%, the viscosity of suspensions was the lowest. In addition, the suspensions dispersed with binary dispersant were less sensitive to ionic strength than the suspensions containing just the PAA. The role of PAA and D-sorbitol in the alumina suspensions was characterized by FTIR spectroscope. Based on the rheology and FTIR measurements, a schematic model was established to depict the mechanism for the effect of D-sorbitol in the presence of PAA. D-Sorbitol was absorbed both on alumina surface and the absorbed PAA, leading to an enhanced steric hindrance thus resulting better stability of the suspensions.

Key words: poly (acrylic acid), D-sorbitol, alumina suspension, rheology

CLC Number:

TQ174

YU Xiao-Lin, XIAO Chun-Xia, GUO Lu-Cun. Effect of D-sorbitol on Rheology of Aqueous Alumina Suspensions with Poly(Acrylic Acid)[J]. Journal of Inorganic Materials, 2011, 26(5): 545-549.

References

[1] Lewis J A. Colloidal processing of ceramics. J. Am. Ceram. Soc., 2000, 83(10): 2341-2359.

[2] Marco P, Labanda J, Llorens J. The effects of some polyelectrolyte chemical compositions on the rheological behaviour of kaolin suspensions. Powder Technol., 2004, 148: 43-47.

[3] 李登好, 郭露村(LI Deng-Hao, et al). 吸附途径对α-Al2O3-H2O- PAA悬浮液流变性影响. 无机材料学报(Journal of Inorganic Materials), 2004, 19(4): 948-952.

[4] Tomasik P, Schilling C H, Jankowiak R, et al. The role of organic dispersants in aqueous alumina suspensions. J. Eur. Ceram. Soc., 2003, 23(6): 913-919.

[5] Guo L C, Zhang Y, Uchida N, et al. Adsorption effects on the rheological properties of aqueous alumina suspensions with polyelectrolyte. J. Am. Ceram. Soc., 1998, 81(3): 549-556.

[6] Binner J G P, Mcdermott A M. Rheological characterisation of ammonium polyacrylate dispersed, concentrated alumina suspensions. Ceramic International, 2006, 32(7): 803-810.

[7] Schilling C H, Sikora M, Tomasik P, et al. Rheology of alumina– nanoparticle suspensions: effects of lower saccharides and sugar alcohols. J. Eur. Ceram. Soc., 2002, 22(6): 917-921.

[8] Schilling C H, Li C P, Tomasik P, et al. The rheology of alumina suspensions: influence of polysaccharides. J. Eur. Ceram. Soc., 2002, 22(6): 923-931.

[9] 吕明静, 肖春霞, 郭露村. 复合分散剂稳定的氧化铝悬浮液抗电解质特性的研究. 陶瓷学报, 2010, 31(1): 91-95.

[10] Wang X L, Guo L C. Effect of sucrose on rheological properties of aqueous zirconia suspensions with polyacrylate. Powder Technol., 2008, 186(2): 107-112.

[11] Hotta Y, Tsugoshi T, Nagaoka T, et al. Effect of oligosaccharide alcohol addition to alumina slurry and translucent alumina produced by slip casting. J. Am. Ceram. Soc., 2003, 86(5): 756-760.

[12] Pradhan M, Bhargava P. Influence of sucrose addition on rheology of alumina slurries dispersed with a polyacrylate dispersant. J. Am. Ceram. Soc., 2005, 88(4): 833-838.

[13] Xiao C X, Gao L, Lu M J, et al. Synergistic effect of copolymer and poly(vinylpyrrolidone) mixtures on rheology of aqueous SiC suspensions. Colloids Surf A: Physicochem. Eng. Aspects, 2010, 355(1/2/3): 104-108.

[14] Wang X L, Guo L C. Effect of ionic strength on rheological properties of binary Al2O3/ZrO2 suspensions. Colloids Surf A: Physicochem. Eng. Aspects, 2007, 297(1/2/3): 7-13.

[15] Tseng W J, Wu C H. Aggregation, rheology and electrophoretic packing structure of aqueous A12O3 nanoparticle suspensions. Acta Mater., 2002, 50(15): 3757-3766.

[16] Studart A R, Amstad E, Antoni M, et al. Rheology of concentrated suspensions containing weakly attractive alumina nanoparticles. J. Am. Ceram. Soc., 2006, 89(8): 2418-2425.

[17] Cesarano J, Aksay I A. Processing of highly concentrated aqueous α-alumina suspensions stabilized with polyelectrolytes. J. Am. Ceram. Soc., 1988, 71(12): 1062-1067.

[18] 吕明静. 二元分散剂对氧化铝水性悬浮液稳定性影响的研究. 南京: 南京工业大学硕士论文, 2010.

[19] Verm-hlen K, Lewandowski H, Narres H D, et al. Adsorption of polyelectrolytes on oxudes-the influence of ionic strength, molar mass, and Ca2+ ions. Colloids Surf A: Physicochem Eng Aspects, 2000, 163(1): 45-53.

[20] 刑存章, 于跃芹. 有机化学. 济南: 山东大学出版社, 2001: 494-513.

[21] 刘银, 张明旭. 高能球磨氧化铝的微观结构和红外光谱分析.安徽理工大学学报(自然科学版), 2008, 28(4): 62-64.

[22] 李莉娟, 孙凤久, 楼丹花, 等. 纳米氧化铝的晶型及粒度对其红外光谱的影响. 功能材料, 2007, 38(3): 479-484.

[23] 赵春芳, 尹正勇, 李波. α型氧化铝的微观结构对红外光谱图的影响. 光谱实验室, 2007, 24(3): 341-344.

[24] Guo L C. Surface and Colloidal Chemistry in Processing of Advanced Alumina Ceramics. Nagaoka, Japan: Nagaoka University of Technology, 1998.