This study examines the fundamental and practical aspects of C₁-C₄ hydrocarbons separation (pure or in binary or ternary mixtures), using highly permeable glassy 1,2-disubstituted polyacetylenes. Poly(4-methyl-2-pentyne) (PMP) was chosen as the main object of study. An attempt is made here to carry out a systematic comparative study of the PMP permeability target parameters using correlation detection and a thermodynamic gas/polymer model. A non-isothermal application method was used, which allowed us to work with each gas individually and with various mixtures to obtain an experimental value for the dependence on temperature of the permeability of C₁, C₃, C₄ hydrocarbons. This is the first time that this method has been used for the study of glassy polymers with high free volume. An interesting phenomenon of an increase in non-additive separation selectivity α was shown (for a value of α of between ∼10 and ∼8000 units) with increase of butane activity (p/p_sat) from 0.02 to 0.94 in the feed gas mixture. In the current study, an explanation is given for the increase in non-additive selectivity for PMP membrane separation. Modelling was carried out of the separation process of a binary butane/methane mixture using this non-additive phenomenon, which gives rise to concentrated components.

这项研究使用高渗透性的玻璃状1,2-二取代聚乙炔，研究了C ₁ -C ₄烃分离（纯净或二元或三元混合物）的基本和实用方面。选择聚（4-甲基-2-戊炔）（PMP）作为主要研究对象。此处尝试使用相关检测和热力学气体/聚合物模型对PMP渗透率目标参数进行系统的比较研究。使用了一种非等温的施加方法，该方法使我们能够分别处理每种气体和各种混合物，以获得C ₁，C ₃，C ₄的渗透率与温度的关系的实验值。碳氢化合物。这是该方法首次用于具有高自由体积的玻璃态聚合物的研究。随着原料气混合物中丁烷活性（p / p _sat）从0.02增加到0.94，显示了一个非有趣的分离选择性α增加的有趣现象（α值介于约10至8000单位之间）。 。在当前的研究中，给出了对PMP膜分离的非附加选择性增加的解释。使用该非添加现象对二元丁烷/甲烷混合物的分离过程进行了建模，这会导致浓缩的组分。