海藻酸钠/羧甲基纤维素钠纺丝溶液的流变性能研究  

Study on rheological behavior of ALG/CMC spinning solution

作　　者：鞠学勇[1] 王柳[2] 张传杰[2] 朱平[1,2] 

机构地区：[1]青岛大学"纤维新材料及现代纺织"国家重点实验室培育基地,山东青岛266071 [2]武汉科技学院"新型纺织材料绿色加工及其功能化"教育部重点实验室,湖北武汉430073

出　　处：《印染助剂》2010年第2期10-13,共4页Textile Auxiliaries

基　　金：国家自然科学基金(50773032);教育部博士点基金(20061065002)资助

摘　　要：采用毛细管流变仪测定海藻酸钠/羧甲基纤维素钠纺丝溶液的流变性能,结果表明:海藻酸钠/羧甲基纤维素钠纺丝溶液是"切力变稀"流体,随着剪切速率的增加,纺丝液的表观粘度ηa下降.纺丝液中CMC的含量和温度影响纺丝液的流变行为,纺丝液的表观粘度ηa和结构粘度指数△η随羧甲基纤维素钠含量的降低和纺丝液温度的升高而下降;纺丝液的非牛顿指数n随羧甲基纤维素钠含量的降低和纺丝液温度的升高而升高.因此,纺丝时应控制40℃左右的纺丝液中CMC的含量低于20%.The rheological behavior of sodium alginate/sodium carboxymethyl cellulose spinning solution was measured with capillary rheometer. The results showed that the spinning solution of sodium alginate/sodium carboxymethyl cellulose belonged to the ＂shear thinning＂ fluid. With the increase of shear rate, the apparent vis- cosity of spinning solution decreased. The temperature and content of CMC influenced the rheological behavior of spinning solution. The apparent viscosity ηa and the structural viscosity index △η of spinning solution decreased with the increase of the temperature and the decrease of the content of sodium carboxymethyl cellulose. The non-Newtonian index n of spinning solution increased with the temperature increasing and the content of sodium carboxymethyl cellulose decreasing. Accordingly, CMC content in 40 ℃ of spinning solution should be controlled lower than 20% during spinning process.

关 键 词：海藻酸钠 羧甲基纤维素钠 流变性 

分 类 号：TQ340.6[化学工程—化纤工业]