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聚合物上炭黑填料颗粒所涉及的表面性质的表征
时间: 2019-09-04 20:28 浏览次数:
本文试图说明在无限稀释下使用反气相色谱IGC来表征聚合物吸附在填料颗粒上的表面相互作用。该方法评估基于对未被聚合物沉积物覆盖的炭黑颗粒区域所显示的表面性质。......

  本文试图说明在无限稀释下使用反气相色谱IGC来表征聚合物吸附在填料颗粒上的表面相互作用。该方法评估基于对未被聚合物沉积物覆盖的炭黑颗粒区域所显示的表面性质。样品是先前从聚合物溶液中沉积出来的。
考虑三种类型的表面属性:
•表面能的分散成分;
•纳粗糙度由线性和支链烷烃之间吸附行为的差异决定;
•探针检测到的特异性相互作用能够通过酸 - 碱相互作用表达,例如苯。
从与吸附的聚合物量的增加相关的最高能量位点的逐渐变化,可以鉴定聚合物吸附所涉及的那些。通过改变聚合物的性质,还可以显示聚合物上的化学基团的性质如何影响碳颗粒上的吸附位点。







This paper is an attempt to illustrate the interest of using IGC at infinite dilution for the characterization of the surface interactions involved by polymer adsorption on filler particles. The method is based on the assessment of the surface properties displayed by the areas of carbon black particles left uncovered by the polymer deposits .
Three types of surface properties are considered:
• the dispersive component of surface energy ;
• the nanoroughness as determined by the difference in adsorption behaviour between linear and branched alcanes;
• the specific interactions as detected by probes able to interact by acido-basic interactions, as for example benzene.
From the progressive disparition of the highest energetic sites associated with the increase in the amounts of adsorbed polymers, it is possible to identify those involved by the polymer adsorbtion. By changing the nature of the polymer , it is also possible to show how the nature of the chemical groups on the polymer influence the adsorption site on the carbon particles.







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