海藻酸钠/羧甲基壳聚糖纺丝溶液的流变性能  

Rheological behavior of sodium alginate/carboxymethyl chitosan spinning solution

作　　者：李艳峰[1] 张传杰[1] 王柳[1] 朱平[1] 

机构地区：[1]武汉纺织大学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：《合成纤维工业》2011年第4期10-12,共3页China Synthetic Fiber Industry

基　　金：国家自然科学基金(50773032和51073122);湖北省自然科学基金重点项目(2009CDA033)资助

摘　　要：采用RT-2000毛细管流变仪,研究了海藻酸钠(SAL)/羧甲基壳聚糖(CMCS)纺丝溶液的流变性能。结果表明:SAL/CMCS纺丝溶液是切力变稀型流体,随着剪切速率(γ)的增加,纺丝溶液的表观粘度(η_a)下降;随着纺丝液中CMCS含量的增加,SAL/CMCS纺丝溶液的η_a和结构粘度指数(△η)下降,非牛顿指数(n)增大;随着纺丝液温度的升高,SAL/CMCS纺丝溶液的η_a和△η下降,n增大。纺丝过程中应控制SAL/CMCS纺丝溶液的温度为35℃,纺丝溶液中CMCS质量分数为15%较适宜。The rheological behavior of sodium alginate （SAL）/carboxymethyl chitosan （CMCS） spinning solution was studied with a RT-2000 capillary rheometer. The results showed that SAL/CMCS spinning solution was shear thinning fluid. The apparent viscosity （ηa） of the spinning solution was decreased with the increase of the shearing rate （ y ）. While increasing CMCS con- tent of spinning solution, ηa and the structural viscosity index （△η） of SAL/CMCS spinning solution both dropped and the non- Newtonian index （n） rose. While elevating the spinning solution temperature,ηa and △η dropped and n rose. The temperature of SAL/CMCS spinning solution should be controlled as 35℃ and the mass fraction of CMCS as 15% in the spinning solution dur-ing the spinning process.

关 键 词：海藻酸钠 羧甲基壳聚糖 流变性能 海藻酸盐纤维 医用纤维 

分 类 号：TQ340.4[化学工程—化纤工业]