改性剂PVA对Lyocell纤维结构和性能的影响  

Effects of Polyvinyl Alcohol on the Structure and Properties of Lyocell Fiber

作　　者：陈钦[1] 杨阳[1] 杨革生[1] 邵惠丽[1] 胡学超[1] 

机构地区：[1]东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620

出　　处：《纤维素科学与技术》2013年第4期43-49,共7页Journal of Cellulose Science and Technology

基　　金：上海市重点学科建设项目(B603)

摘　　要：将聚乙烯醇(PVA)加入到纤维素/NMMO·H2O溶液中进行纺丝,制备了不同PVA含量的Lyocell纤维,并对纤维的结构和性能进行了表征。结果表明,添加适量的PVA可以降低纺丝原液的黏度,提高纺丝液的可纺性,明显提高Lyocell纤维的强度和模量;通过X射线衍射测试,发现添加PVA之后Lyocell纤维仍然具有纤维素Ⅱ晶型的结构;此外,PVA的加入还可以改善Lyocell纤维的抗原纤化性能,提高Lyocell纤维的热稳定性。LyoceU fibers modified by polyvinyl alcohol were prepared, and their structure and properties were analyzed. The result showed that the addition of adequate polyvinyl alcohol can reduced the viscosity of the dopes, increased the spinnability of the dopes, and improved the tensile strength and initial modulus of the Lyocell fiber significantly. The result of X-ray Diffraction （XRD） found that the modified Lyocell fiber had the cellulose Ⅱ crystal structure. In addition, the fibrillation resistance and thermal stability of the Lyocell fiber were also improved by the addition ofpolyvinyl alcohol.

关 键 词：LYOCELL纤维 聚乙烯醇(PVA) 结构 力学性能 

分 类 号：TQ341.9[化学工程—化纤工业]