Abstract A wealth of physico-chemical information has been obtained on an insoluble and crystalline polypyrrole/titanium oxide (PPY/TiO 2 ) using the Inverse Gas Chromatography Method (IGC). Twenty-five solvents (test compounds) with different specific interactions were used. PPY/TiO 2 was synthesized and characterized by FTIR and DSC methods. The following characteristics of PPY/TiO 2 were explored: changes in morphology, the strength of solvent–PPy/TiO 2 interactions, dispersive surface energy, percent crystallinity, solvents and PPy/TiO 2 solubility parameters, and molar heat of sorption, mixing and evaporation ( $$\Delta H_{1}^{s}$$ Δ H 1 s , $$\Delta H_{1}^{\infty }$$ Δ H 1 ∞ , $$\Delta H_{1}^{v}$$ Δ H 1 v ). Interaction parameters were corrected to be free from the solvents’ chemical nature. Nonane, propyl acetate, and methyl ethyl ketone showed stronger interactions and a higher affinity to PPy/TiO 2 ; yet, none of these solvents can dissolve PPy/TiO 2 . IGC showed that PPy/TiO 2 has 59.34 mJ/m 2 dispersive surface energy at 100 °C and 98% crystalline at 60 °C. Comprehensive solvents and PPy/TiO 2 solubility parameters were obtained and comparted with that of soluble and insoluble polymers. Graphic abstract Inverse Gas Chromatography (IGC) along with DSC and FTIR methods investigated the morphology, surface energy, degree of crystallinity and the thermodynamics of conducting polypyrrole/TiO 2 . The solubility parameters were calculated for 27 solvents.

中文翻译：

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通过反向气相色谱法测定导电聚合物的溶解度和表面热力学，IV：聚吡咯/氧化钛

摘要 使用逆气相色谱法 (IGC) 获得了关于不溶性结晶聚吡咯/氧化钛 (PPY/TiO 2 ) 的大量物理化学信息。使用了 25 种具有不同特异性相互作用的溶剂（测试化合物）。合成了PPY/TiO 2 并通过FTIR和DSC方法对其进行了表征。研究了 PPY/TiO 2 的以下特性：形态的变化、溶剂-PPy/TiO 2 相互作用的强度、分散表面能、结晶度百分比、溶剂和 PPy/TiO 2 溶解度参数，以及摩尔吸附热、混合热和蒸发 ( $$\Delta H_{1}^{s}$$ Δ H 1 s , $$\Delta H_{1}^{\infty }$$ Δ H 1 ∞ , $$\Delta H_{1}^ {v}$$ Δ H 1 v )。相互作用参数被修正为不受溶剂化学性质的影响。壬烷、乙酸丙酯、和甲乙酮对PPy/TiO 2 表现出更强的相互作用和更高的亲和力；然而，这些溶剂都不能溶解PPy/TiO 2 。IGC 表明，PPy/TiO 2 在 100 °C 下具有 59.34 mJ/m 2 色散表面能，在 60 °C 下具有 98% 的结晶度。获得了综合溶剂和PPy/TiO 2 溶解度参数，并与可溶性和不溶性聚合物进行了比较。图形摘要逆气相色谱 (IGC) 连同 DSC 和 FTIR 方法研究了导电聚吡咯/TiO 2 的形态、表面能、结晶度和热力学。计算了 27 种溶剂的溶解度参数。34 mJ/m 2 色散表面能在 100 °C 和 98% 结晶在 60 °C。获得了综合溶剂和PPy/TiO 2 溶解度参数，并与可溶性和不溶性聚合物进行了比较。图形摘要逆气相色谱 (IGC) 连同 DSC 和 FTIR 方法研究了导电聚吡咯/TiO 2 的形态、表面能、结晶度和热力学。计算了 27 种溶剂的溶解度参数。34 mJ/m 2 色散表面能在 100 °C 和 98% 结晶在 60 °C。获得了综合溶剂和PPy/TiO 2 溶解度参数，并与可溶性和不溶性聚合物进行了比较。图形摘要逆气相色谱 (IGC) 连同 DSC 和 FTIR 方法研究了导电聚吡咯/TiO 2 的形态、表面能、结晶度和热力学。计算了 27 种溶剂的溶解度参数。