Superabsorbent Capability and High Retention Ability of China Clay(Kaolinite)/Polyacrylic Acid Composites for Aqueous Solution  

超吸水中国粘土/聚丙烯酸复合材料的制备与表征（英文）

作　　者：Tanveer-Ul-Hassan Shah Mudassir Hussain Tahir Ata ur Rahman He-wen Liu Tanveer-Ul-Hassan Shah;Mudassir Hussain Tahir;Ata ur Rahman;刘和文(中国科学技术大学高分子科学与工程系,中科院软物质化学重点实验室,合肥230026;巴基斯坦白沙瓦大学化学科学研究所,白沙瓦25120)

机构地区：[1]CAS Key Laboratory of Soft Matter Chemistry,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China [2]Institute of Chemical Sciences,University of Peshawar,Peshawar 25120,Pakistan,

出　　处：《Chinese Journal of Chemical Physics》2019年第4期508-512,I0003,共6页化学物理学报（英文）

摘　　要：Majority of superabsorbent polymers (SAPs) yet reported either have low gel strength or high production cost. Therefore, we synthesized a novel polyacrylic acid-grafted China clay (Kaolinite) super-absorbent polymer composite (SAPC) with high thermal stability, low cost of production and superior sorption and retention capability for water and salt solution. The resulting SAPCs were extensively characterized and analysed by X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Results suggested that the composites were thermally stable. Water absorbency increased with increase of clay content up to 45%, while further increase in clay content decreased the water absorbency. Percentage of acrylic acid (AA) and clay by weight shows the optimum absorbency in 35% and 40% respectively. Crosslinker and initiator contents were optimized to be 0.5% and 0.3% by weight respectively. The resulting polymer composite showed high water absorbency of about 785 g/g and 103 g/g of 1% NaCl solution with above 90% retention ability at 50 oC.

关 键 词：China clay Superabsorbent composite KAOLINITE ABSORBENCY Acrylic acid 

分 类 号：TB332[一般工业技术—材料科学与工程]