引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 82次   下载 75 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Superabsorbent Capability and High Retention Ability of China Clay (Kaolinite)/Polyacrylic Acid Composites for Aqueous Solution
Tanveer-Ul-Hassan Shah*,Mudassir Hussain Tahir,Ata ur Rahman,He-wen Liu*
Author NameAffiliationE-mail
Tanveer-Ul-Hassan Shah* CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China shah123@mail.ustc.edu.cn 
Mudassir Hussain Tahir CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Ata ur Rahman Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan  
He-wen Liu* CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Abstract:
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.
Key words:  China clay, Superabsorbent composite, Kaolinite, Absorbency, Acrylic acid
FundProject:
超吸水中国粘土/聚丙烯酸复合材料的制备与表征
Tanveer-Ul-Hassan Shah*,Mudassir Hussain Tahir,Ata ur Rahman,刘和文
摘要:
本文采用共聚合法,以过硫酸钾作为发剂,N-N-亚甲基双丙烯酰胺作为交联剂,亚硫酸钠作为催化剂,合成了不同组成的SAPC样品系列. 对比不同样品,找出中国粘土含量和丙烯酸含量对吸水和保水能力的影响. 与原始粘土相比,中国粘土在SAPC中的层间距离有所扩大. SAPC中粘土含量对吸水性的影响表明,在45%含量以下,水的吸收率随粘土含量的增加而增加,而粘土含量的进一步增加降低了水的吸收性. 在不同丙烯酸重量百分比样品中,最佳吸收率在丙烯酸重量百分比 25%∽35%之间. 所得聚合物复合材料具有约190 g/g的高吸水性.
关键词:  超吸水材料,聚丙烯酸,中国粘土,复合材料
DOI:10.1063/1674-0068/cjcp1810229
分类号: