采用熔融共混-母粒稀释技术并辅以高效动态混合器制备了聚丙烯/炭黑薄膜.基于TEM图像定性和定量表征了炭黑在其中的分散与分布.首次将Image J图像分析软件引入分析过程,获取了粒子数目、粒子表面密度、平均粒径及其分布等统计数据.结果表明,粒子平均直径为0.2μm,当量直径服从多峰非正态分布.Origin拟合结果表明,粒子面积服从对数正态分布.此外,将TEM图像所呈现的定性信息与描述混合体系混合效果的森下氏分散指数(Ⅰ)、偏斜度(β)及莱西指数(M)结合起来,对炭黑粒子在聚丙烯基体中的分散与分布进行了定量表征.森下氏分散指数为0.985,表明炭黑粒子在基体中的空间分布均匀；偏斜度为0.0014,意味着薄膜中炭黑粒子分散良好及分布均匀；莱西指数为0.987,表明炭黑粒子与聚合物基体混合效果较好.%PP/CB films were prepared with the method of melt blending-masterbatch dilution method, assisted by high-efficiency dynamic mixer. Based on TEM images, the dispersion and distribution of CB particles were characterized quantitatively and qualitatively. The image analysis software, Image J, was introduced to achieve particle number, particle area density, particle size and their distribution. It turns out that the mean diameter of particles is about 0. 2μm and equivalent diameter subjects to non-normal multi-peak distribution. The result from origin fitting confirms that area distribution of particles approximately follows lognormal distribution. Quantitative and qualitative characterization were conducted combining TEM images with Morisita's index (I), Skewness (β) and Lacey index (M) which were used to depict mixing effect. Morisita's index is 0. 985, which demonstrates a uniform distribution of CB particles. The value of Skewness(0. 0014) informs us that CB particles in polymer matrix are provided with good dispersion and uniform distribution. Lacey index equals 0. 987, which indicates that CB particles and polymer matrix are mixed well.
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