海藻纤维用不同溶剂处理后分散性的研究  

The Research on the Dispersion of Alginate Fibers Processed through Different Solvents

作　　者：朱顺生[1] 王兵兵[2] 田星[1] 李凯[1] 姚久勇 潘若才[1] 夏延致[2] 

机构地区：[1]青岛大学化学科学与工程学院,青岛266071 [2]山东省海洋生物质纤维材料及纺织品协同创新中心青岛大学国家重点实验室培育基地,青岛266071

出　　处：《高分子学报》2015年第5期493-499,共7页Acta Polymerica Sinica

基　　金：山东省自主创新专项(项目号2013CXA02017)资助

摘　　要：通过湿法纺丝技术,将纺丝液挤出到凝固浴中,制备出海藻纤维丝束.然后利用不同的溶剂对海藻纤维丝束进行浸泡处理30 min,60℃条件下干燥3 h后,通过光学显微镜观察海藻纤维丝束在不同溶剂中的变化,通过扫描电子显微镜分析了海藻纤维表面的形貌变化及干燥后的海藻纤维丝束的分散状态,通过傅里叶红外图谱分析了海藻纤维和海藻酸钠粉末中氢键的缔合现象.在实验观察、红外谱图分析和吸湿理论的基础上,结合对不同溶剂之间的区别与联系的分析,探讨了海藻纤维丝束在干燥过程中产生并丝现象的界面理论模型,并应用这一界面理论模型对实验现象进行了合理的解释.最后,通过加热破坏氢键实验、封闭羟基实验和冷冻干燥实验,验证了这一界面理论模型的正确性的同时,也可以用来解决纤维丝束的并丝现象,扩展其应用范围.The alginate fiber bundles prepared by wet spinning techniques were processed through soaking in different solvents for 30 min and then dried at 60 ~C for 3 h. The changes of the alginate fiber in different solvents were observed through an optical microscope and the alginate fiber bundles were observed through an scanning electron microscope. The changes of the surface of alginate fiber processed though different solvents and the dispersion of dried alginate fiber bundles were analyzed. The association phenomenon of hydrogen bonds in the alginate fiber and the alginate powder were analyzed through the Fourier infrared spectrum. On the basic of observation, the analysis of the Fourier infrared spectrum and the theory of moisture sorption, combining with an analysis of the difference and connection between different solvents, an interracial theory model of producing doubling fibers in alginate fiber bundles during the drying process was discussed. Then a reasonable explanation of the experimental phenomena was given by applying this interracial theory model. In the end, the experiment of destroying the hydrogen bonds by heating, the experiment of closing the hydroxyl and the freeze-dried experiment were used to verify the correctness of the interracial theory model,but also can be used to solve the problem of producing doubling fiber,then expanding its scope of application.

关 键 词：海藻纤维 氢键作用 并丝现象 分散性 

分 类 号：TQ340.64[化学工程—化纤工业]