The aim of the study is to investigate barrier properties of a nanocomposite material against organic solvents. Molecular transport phenomena of three alcohols, namely methanol, ethanol and isopropanol, through a nitrile rubber-based nanocomposite, are carried out in temperatures ranging from 23 to 70°C. For each configuration, mass transfer kinetics are investigated for three different types of clay nanoparticles using mass uptake experiments. Maleated nanocomposites with enhanced dispersion morphology are also examined. Results show that all molecular transport parameters are generally susceptible to temperature variations. Sorption and diffusion coefficients noticeably increased as temperatures increased. Polymer/solvent interaction seems to be similarly affected. Molecular volume of the penetrant is observed to have an influence on molecule migration. Diffusion coefficients are likewise affected and decrease with the linear increase of molecular volume. The diffusion mechanism is slightly altered by this factor and the Fickian mode is maintained. When filling the rubbery matrix with layered silicates, sorption decreases at equilibrium. Its level drops even lower with the maleation of the nanocomposite. However, the diffusion coefficient exhibits a less systematic trend. Randomly filled nanocomposites appear to have higher diffusivity than neat rubber, but diffusion parameter considerably decreases after maleation, which emphasizes the nanoclay’s dispersion effect.

该研究的目的是研究纳米复合材料对有机溶剂的阻隔性能。三种醇（即甲醇，乙醇和异丙醇）通过丁腈橡胶基纳米复合材料的分子传输现象是在23至70°C的温度范围内进行的。对于每种构型，使用质量吸收实验研究了三种不同类型的粘土纳米颗粒的传质动力学。还检查了具有增强的分散形态的马来酸化纳米复合材料。结果表明，所有分子转运参数通常都容易受到温度变化的影响。吸附系数和扩散系数随着温度的升高而显着增加。聚合物/溶剂的相互作用似乎也受到类似的影响。观察到渗透剂的分子体积对分子迁移有影响。扩散系数同样受到影响，并且随着分子体积的线性增加而减小。扩散机制因该因素而略有改变，并保持了Fickian模式。当用层状硅酸盐填充橡胶状基质时，吸附在平衡时降低。随着纳米复合材料的马来化，其水平下降甚至更低。但是，扩散系数显示出较少的系统趋势。随机填充的纳米复合材料似乎比纯橡胶具有更高的扩散率，但是在马来酸化后扩散参数大大降低，这强调了纳米粘土的分散效果。扩散机制因该因素而略有改变，并保持了Fickian模式。当用层状硅酸盐填充橡胶状基质时，吸附在平衡时降低。随着纳米复合材料的马来化，其水平下降甚至更低。但是，扩散系数显示出较少的系统趋势。随机填充的纳米复合材料似乎比纯橡胶具有更高的扩散率，但是在马来酸化后扩散参数大大降低，这强调了纳米粘土的分散效果。扩散机制因该因素而略有改变，并保持了Fickian模式。当用层状硅酸盐填充橡胶状基质时，吸附在平衡时降低。随着纳米复合材料的马来化，其水平下降甚至更低。但是，扩散系数显示出较少的系统趋势。随机填充的纳米复合材料似乎比纯橡胶具有更高的扩散率，但是在马来酸化后扩散参数大大降低，这强调了纳米粘土的分散效果。