采用DMAC/LiCl为溶剂,分别溶解纤维素与氨纶切片TPU,强烈机械搅拌共混均匀,以蒸馏水为凝固浴制备再生纤维素/TPU复合膜,用核磁共振1 H NMR分析谱图表征了TPU的结构特征,傅里叶红外光谱(FT-IR)、X射线衍射(XRD)、材料万能拉伸仪对复合膜的结构及强力性能进行了测试,采用WGT-S透光仪测定了复合膜的透光率,结果表明TPU引入纤维素矩阵中,一定程度上破坏了再生纤维素膜的结晶度,大大提高了再生纤维素膜的断裂伸长率,降低了其拉伸强度,当TPU加入量为20%(质量分数),再生纤维素膜的断裂伸长率提高到65%,透光率均保持良好。
Cross-linked regenerated cellulose fibers(CRCFs) were prepared by wet spinning firstly and then treated by high temperature curing. Cellulose dissolved in ionic liquid together with wrinkle proofing agent and cross-linking agent was employed as spinning solution. The properties and structure of CRCFs were investigated. Fourier transform infrared(FT-IR) spectroscopy and X-ray diffraction(XRD) analysis show that CRCFs were prepared successfully and the crystal form of the fibers remained the same before and after cross-linking. The results indicate that CRCFs prepared in this study possess more excellent wrinkle recovery ability and wash durability than those treated by finishing process.
LIU JieWANG HuaifangZHANG LinSUI ShuyingZHANG RuiDONG ChaohongLIU YunZHU Ping
