纺织学报 ›› 2013, Vol. 34 ›› Issue (5): 25-29.

• 纤维材料 • 上一篇    下一篇

壳聚糖/羟丙基纤维素共混材料的流变学与润湿性

谢亚杰 王专 秦益民 胡万鹏 徐松 王华升 石杨华   

  1.  嘉兴学院生物与化学工程学院
  • 收稿日期:2012-06-05 修回日期:2012-08-28 出版日期:2013-05-15 发布日期:2013-05-09
  • 通讯作者: 谢亚杰 E-mail:shoujisf123@qq.com
  • 基金资助:

    浙江省科技厅项目;嘉兴学院科研启动项目

Rheology and wettability of chitosan /hydroxypropyl cellulose blend materials

  • Received:2012-06-05 Revised:2012-08-28 Online:2013-05-15 Published:2013-05-09
  • Supported by:

    Hall of Zhejiang province science and technology on projects

摘要: 探讨壳聚糖/羟丙基纤维素(HPC)共混材料的流变性与润湿力。使用RVDV-ⅡPRO黏度计测定体系的黏度和剪切应力以考察组成与温度对材料流变性的影响;借助K100表面张力仪测定膜的接触角以考察材料的润湿力。结果显示:除壳聚糖与HPC质量分数均≤1%的共混溶液近似为牛顿流体外,其余均为非牛顿流体;溶液黏度随温度升高而降低;20℃时共混膜的润湿力为甲醇>DMF>乙二醇>水;膜最低水接触角依次为20℃<40℃<30℃;弱酸或弱碱性介质均可提高膜的亲水性;当HPC质量分数为0~1%时,水接触角由空白值71.04°最低可降至55.38°。该结果对壳聚糖/HPC共混材料的纺丝与应用有指导作用。

关键词: 壳聚糖/HPC共混材料, 黏度, 流变性, 润湿力

Abstract: This paper deals with the rheological behavior and wetting power of chitosan/ hydroxypropyl cellulose (HPC) blend materials. Measuring the viscosity and shear stress of the blend solution by RVDV-ⅡPRO viscosimeter, the influences of composition and temperature on the rheological behavior of blend solution were observed, respectively. The contact angle (CA) of the film was measured by a K100 automatic surface tensiometer to investigate the chitosan / HPC blend materials wetting power. The results showed that almost all the mass ratio blend solutions belong to non-Newtonian fluid except the blends with mass fraction of not more than 1% HPC and not more than 1% chitosan——Newtonian fluid. The blend viscosity falls as temperature rises. The contact angle minimum is in the sequence as that of methyl alcohol< that of ethylene glycol < that of N, N-dimethylformamide < that of distilled water at 20 oC. Temperature change can make water CA low down obviously, and the CA values is in the order of that : 20℃<40℃<30 ℃ when the mass fraction of HPC is below 0.25%. The pH rising or falling a little more can both lead to the CA falling. When the mass fraction of HPC in blend material was in 0~1 %, the water CA changes from 71.04 ° to 55.38 °. Those will have some guidance significance to chitosan / HPC blend materials spinning, film forming and their application.

Key words: chitosan/HPC blend material, wiscosity, rheological behavior, wetting power

中图分类号: 

  • TQ341.9
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