In the first part of this study, poly(methyl methacrylate) (PMMA)/multiwall carbon nanotube (MWCNT) nanocomposite was synthesized by adding carbon nanotube before polymerization with bulk polymerization. Surface morphology of the PMMA/MWCNT nanocomposite and the PMMA/MWCNT nanocomposite with Chromosorb W was characterized by scanning electron microscopy (SEM). Surface and thermodynamic properties of the PMMA/MWCNT nanocomposite were investigated by inverse gas chromatography (IGC). The surface acid base character and dispersed surface energy of the PMMA/MWCNT were determined at infinite dilution. The entropy of adsorption, ∆S^S, the specific free energy of adsorption, ∆G^S, and the enthalpy of adsorption, ∆H^S, of selected polar solvents were determined on the PMMA/MWCNT nanocomposite. The values of ∆H^S were correlated with both the acceptor and donor numbers of the solvents to determine the Lewis acidic constant K_A and the Lewis basic constant K_D of the PMMA/MWCNT nanocomposite. The PMMA/MWCNT nanocomposite selectivity was investigated using the acetate and alcohol isomers by IGC at temperatures between 393.2 and 403.2 K. Glass transition temperature (T_g) was determined using differential scanning calorimetry (DSC) and IGC method.

中文翻译：

---

聚甲基丙烯酸甲酯/多壁碳纳米管纳米复合材料的合成及热力学表征

在本研究的第一部分中，通过在本体聚合之前加入碳纳米管来合成聚甲基丙烯酸甲酯（PMMA）/多壁碳纳米管（MWCNT）纳米复合材料。通过扫描电子显微镜（SEM）表征了PMMA / MWCNT纳米复合材料和带有Chromosorb W的PMMA / MWCNT纳米复合材料的表面形态。通过反相气相色谱法（IGC）研究了PMMA / MWCNT纳米复合材料的表面和热力学性质。在无限稀释下测定PMMA / MWCNT的表面酸碱特性和分散的表面能。吸附的熵，ΔS^小号，吸附的特定自由能，ΔG^小号和吸附的焓，ΔH^小号在PMMA / MWCNT纳米复合材料上确定了选定的极性溶剂。的值ΔH^小号与溶剂的受主和施主二者的数字来确定路易斯酸性常数进行了关联ķ_甲和路易斯基本恒定ķ _d的PMMA / MWCNT纳米复合材料。在393.2和403.2 K之间的温度下，使用乙酸酯和醇异构体通过IGC研究了PMMA / MWCNT纳米复合材料的选择性。使用差示扫描量热法（DSC）和IGC方法确定了玻璃化转变温度（T _g）。