聚乙烯醇／水滑石共混纤维的制备及其性能研究

采用凝胶纺丝法制备聚乙烯醇／水滑石（PVA／HT）共混纤维。通过扫描电镜（SEM）观察水滑石在PVA／HT共混纤维中的分散状况和共混纤维的表面形态。从傅里叶变换红外光谱（FT-IR）可以看出HT和PVA之间存在明显的氢键作用；热重分析（TG）测试表明水滑石的加入可以有效提高PVA的热性能；加入适量的HT可以提高PVA纤维的断裂强度；随着HT含量的增加，PVA／HT共混纤维的最大拉伸倍数下降且表面易产生缺陷。

Preparation and characterization of PVA/HT blend fibers

Poly(vinyl alcohol)/Hydrotalcite(PVA/HT) blend fibers were prepared by mixed-gel spinning. Through Scanning Electronic Microscopy(SEM),the dispersion of HT in the PVA/HT blends fibers and the blend fibers surface morphology were observed.It was showed that hydrogen bond was significantly increased between PVA and HT based on Fourier Transform Infrared Spectroscopy(FT-IR).Thermal gravimetric analysis(TG) test show that adding HT can effectively improve the thermal properties of PVA.A proper amount of HT in the PVA fiber improved the mechanical properties of the blend fibers.With the increase of HT content in PVA/HT blend fibers, the maximum draw ratio of PVA/HT blend fiber decreased and the surface appear defect easily.