Phase morphology and mechanical pro

Phase morphology and mechanical properties of the electrospun polyoxymethylene/polyurethane blend fiber mats.
Polyoxymethylene/thermoplastic polyurethane (POM/TPU) blends containing 10–30 wt % of TPU were electrospun using hexafluoroisopropanol as the solvent. The average fiber diameter increases with the increase in TPU content from 0.68 μm for neat POM fibers to 0.92 μm for POM/TPU 7:3 blend fibers due to the increase in solution viscosity. Core/sheath structure with the major component POM as the core and the minor component TPU as the sheath was observed by transmission electron microscopy and further confirmed by surface N contents of the blend fiber mats. The crystalline melting point and the degree of crystallinity of POM have no obvious change by coelectrospinning with TPU due to lack of interaction between POM and TPU as revealed by Fourier transform infrared spectroscopy. Tensile tests showed that the unusual high ductility of POM fiber mat could be further increased by coelectrospinning with 10 or 20 wt % TPU without significantly decreasing the stiffness and strength.

結果 (中文) 1:

相形貌和力学性能的电纺聚甲醛/聚氨酯共混纤维毡。聚甲醛/热塑性聚氨酯 (POM/TPU) 共混物含 10 – 30 wt %的 TPU 了静电纺丝用丙醇作为溶剂。纤维平均直径增加而增加 TPU 含量从齐聚甲醛纤维 0.68 μ m 到 0.92 μ m 为 POM/TPU 7:3 混合纤维的增加在溶液的粘度。核心/鞘结构的主要组成部分为核心的 POM 和次要组份 TPU 鞘是用透射电镜观察，进一步证实了表面 N 内容的混合纤维毡。晶体的熔点和聚甲醛结晶度必须无明显变化由 coelectrospinning 与 TPU 由于缺乏 POM 与 TPU 的相互作用，揭示的傅里叶变换红外光谱法。拉伸测试表明，聚甲醛纤维毡的不寻常高延展性能进一步提高由 10 或 20 wt %TPU coelectrospinning 而不显著降低的刚度和强度。

結果 (中文) 3:

对静电纺聚甲醛/聚氨酯共混纤维相形态和力学性能。
聚甲醛/热塑性聚氨酯（POM／TPU）共混物中含有10–30重量%的TPU用六氟异丙醇为溶剂纺。纤维平均直径随TPU含量的增加从0.68μ米整齐的POM纤维0.92μm POM/TPU 7：3共混纤维由于溶液粘度的增加。与主要成分POM为核心和次要组分聚氨酯通过透射电子显微镜进一步证实了表面氮含量对共混纤维垫观察鞘芯/鞘结构。晶体的熔点和结晶度的POM与TPU Coelectrospinning由于POM与TPU之间的互动，通过傅里叶变换红外光谱显示无明显变化。拉伸试验表明，POM纤维毡的异常高的延展性可以通过Coelectrospinning 10或20重量%的TPU无显著下降的刚度和强度进一步提高。