【摘要】 利用扫描电子显微镜和动态力学分析仪研究了马来酸酐熔融接枝聚乙烯（ＰＥ－ｇ－ＭＡ）对尼龙６／聚乙烯（ＰＡ６／ＰＥ）共混物形态结构和动态力学行为的影响．结果表明，ＰＥ－ｇ－ＭＡ使ＰＡ６／ＰＥ共混物中ＰＡｅ的玻璃化转变峰向低温例偏移，这主要归因于ＰＥ－ｇ－ＭＡ改善了ＰＡ６和ＰＥ二者的相容性；但随着ＰＥ分散相中ＰＥ－ｇ－ＭＡ所占比重的增加，ＰＥ－ｇ－ＭＡ与ＰＡ６之间界面化学键合密度增大，使得ＰＡ６的玻璃化转变温度反而提高．同时，利用平行板流交仪研究了ＰＥ－ｇ－ＭＡ对ＰＡ６／ＰＥ共混物熔体流变行为的影响．ＰＥ－ｇ－ＭＡ使共混物熔体粘度和动态储能模量增大，这应归因于ＰＡ６／ＰＥ－ｇ－ＭＡ之间在熔融共混过程中的界面化学键合．更多还原

【Abstract】 ffects of maleic anhydride melt grafted polyethylene(PE-g-MA)on the morphology and dynamic mechanical behavior of nylon 6/polyethylene(PA6/PE)blends were studied by means of scanning electron micrography and Dynamic Mechanical Analysis.The results show that PE-g-MA increases the glass transition peak of PA 6 and shifts the glass transition temperature of PA 6 to lower temperature,due to the improving of the compatibility between PE and PA6 matrix by using PE-g-MA.The degree of chemical reaction between PE-g-MA and PA6 increased with the percentage of PE-g-MA in the dispersive phase including PE and PE-g-MA,resulting in an increase of the glass transition temperature of PA6.Moreover,effects of PE-g-MA on the rheological behavior of PA6/PE blends were also studied by using parallel plate rheometer.PE-g-MA increases the viscosity and dynamic storage modulus, and decreases the dynamic loss of PA6/PE blends,which is attributed to chemical reaction between PA6 and PE-g-MA during melt blending.更多还原