NaCl对海藻酸钠/多壁碳纳米管复合溶液流变性能的影响(英文)  

Effect of NaCl on the Rheological Behaviors of Sodium Alginate Multi-walled Carbon Nanotubes Solutions

作　　者：李玉金[1] 隋坤艳[1] 谢丹[1] 张杨[1] 赵昕[1] 梁洪超[1] 

机构地区：[1]青岛大学纤维新材料与现代纺织国家重点实验室培育基地,青岛266071

出　　处：《科学技术与工程》2012年第9期2078-2081,共4页Science Technology and Engineering

基　　金：国家自然科学基金(50973047);青岛市自然基金(10-3-43-3-jch);青岛市建设委员会项目资助

摘　　要：研究了不同氯化钠(NaCl)浓度,不同温度下的海藻酸钠(SA)及其与多壁碳纳米管(MWCNTs)复合溶液的流变行为。利用Ostwald’s和Arrhenius方程计算得出溶液的非牛顿指数和黏流活化能。结果表明,纺丝溶液属于非牛顿流体,溶液的零剪切黏度随着NaCl浓度的增加逐渐增加,非牛顿指数却逐渐降低。MWCNTs的加入使得SA溶液的黏流活化能降低,说明MWCNTs的加入增加了溶液的流动性。The rheological behaviors of sodium alginate/multi-walled carbon nanotubes（SA/MWCNTs） complex solutions were investigated at different NaCl concentrations and temperatures.The non-newtonian index（n） and flow activation energy（Ea） of spinning solutions were calculated using Ostwald＇s and Arrhenius equation.The results show that spinning solutions were non-newtonian fluids.The zero-shear viscosity of solution is increased with increasing NaCl content,whereas,the non-newtonian index decrease.The flow activation energy of the SA/MWCNTs solution is lower than that of SA solution,suggesting that it has excellent controllability on the viscosity of SA/MWCNTs solution in a wide temperature range in the spinning process.

关 键 词：海藻酸钠 多壁碳纳米管 流变行为 氯化钠 

分 类 号：TQ314.1[化学工程—高聚物工业]