以聚乙烯接枝马来酸酐（PE-g—MAH）作为反应型增容剂，采用熔体共混直接纺丝法制备聚已内酰胺（PA6）／低密度聚乙烯（LDPE）共混纤维，通过毛细管流变仪、扫描电镜（SEM）和差示扫描量热（DSC）测试，研究了共混物的熔体黏度比、相容剂的含量以及循环共混时间对PA6在LDPE基体中分散形态以及对最终制备出的PA6纳米纤维结构的影响。结果表明：随着相容剂含量的增加和循环共混时间的延长，PA6分散相的尺寸先减小后增大。在PA6质量分数为55％、相容荆质量分数为3．5％以及16min的循环混合时间条件下，可制备出直径在80nm～190nm范围内的PA6纳米纤维。
In the present work, PA6/LDPE blend fibers were fabricated by melt mixing and direct spinning using maleic anhydride-grafted polyethylene (PE-g-MAH) as a reactive compatibilizer. The effects'of melt viscosity ratio of blends, the content of compatibilizers, and cyclic mixing time on the morphology development of PA6 phase in LDPE matrix were investigated by capillary rheometer, scaning eectron microscopy (SEM) and differential scanning calorimetry (DSC), respectively. The PA6 nanofibers were obtained by removal of the LDPE matrix from the drawn fibers. With the increase of compatibilizers and cyclic mixing time, the domain size of PA6 phase decreases first, and then increases slightly. PA6 nanofibers with an average diameter of 100 nm were produced from the blend fiber with the mass ratio of PA6/LDPE/PE-g-MAH = 55/41.5/3.5 the cyclic mixing time 'Of 16 min, the content of PA6 and the compatibilizer being 55 % and 3.5 % respectively.
参考文献
| [1] | 中国塑协人造革合成革专业委员会.国内外超纤人工革的技术发展[J].国外塑料,2008(06):34-40. |
| [2] | Scott CE.;Macosko CW. .MORPHOLOGY DEVELOPMENT DURING THE INITIAL STAGES OF POLYMER-POLYMER BLENDING[J].Polymer: The International Journal for the Science and Technology of Polymers,1995(3):461-470. |
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